confusion Posted January 4, 2006 Author Report Share Posted January 4, 2006 I sent the scans thanks, mike. Link to comment Share on other sites More sharing options...
confusion Posted January 4, 2006 Author Report Share Posted January 4, 2006 i think this may be an isc problem. the throttle body is opened just slightly. i'm trying to figure out how to adjust this thing. how do i select E503? Link to comment Share on other sites More sharing options...
BodybyFisher Posted January 4, 2006 Report Share Posted January 4, 2006 Here is the TB Detail showing the ISC and TPS i think this may be an isc problem. the throttle body is opened just slightly. i'm trying to figure out how to adjust this thing. how do i select E503? The TB should not be open at all, that IS your problem, go through the scans I just sent to you. I only did this TB adjustment job, twice, but you have all the information you need now. Mike Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
confusion Posted January 4, 2006 Author Report Share Posted January 4, 2006 Here is the TB Detail showing the ISC and TPS i think this may be an isc problem. the throttle body is opened just slightly. i'm trying to figure out how to adjust this thing. how do i select E503? The TB should not be open at all, that IS your problem, go through the scans I just sent to you. I only did this TB adjustment job, twice, but you have all the information you need now. Mike thanks for the scans, now that i have them, i can't figure out how to get into the proper diagnostics mode. obviously a newbie here. can someone walk me through the specific steps to adjust the isc in layman's terms? thanks joe Link to comment Share on other sites More sharing options...
BodybyFisher Posted January 4, 2006 Report Share Posted January 4, 2006 Here is the TB Detail showing the ISC and TPS i think this may be an isc problem. the throttle body is opened just slightly. i'm trying to figure out how to adjust this thing. how do i select E503? The TB should not be open at all, that IS your problem, go through the scans I just sent to you. I only did this TB adjustment job, twice, but you have all the information you need now. Mike thanks for the scans, now that i have them, i can't figure out how to get into the proper diagnostics mode. obviously a newbie here. can someone walk me through the specific steps to adjust the isc in layman's terms? thanks joe I sent you the 4.9 Vehicle Diagnostics handbook. Go into Diagnostics, when it gets to the end I believe it says, PCM? Selecting HI, will let you go into DATA, select LO until you see ED01 and you will see the TPS setting, then look at the SCAN I sent you that has TPS SETTING CHECK on it, and follow.. Once you get the TPS setting you should set Minimum AIR and ISC also. Mike Here is how to select the TEST TYPE: Having selected a system, the first available test type will be displayed (ie ECM DATA?). While selecting a specific test type any of the following actions may be taken to control the display: 1) Depressing OFF on the CCP will stop the test type selection process and return the display to the next available system selection. 2) Depressing LO on the CCP will display the next available test type for the selected system. The allows the display to be stepped through all available test type choices. This list of test types can be repeated following the display of the last test type. 3) Depressing HI on the CCP will select the displayed test type. At this point the first of several specific tests will appear. 4) Depressing RESET/RECALL will halt diagnostics and return to normal display. With all of the STUFF I have sent you, you should be OK, play with the DIC until you get it down, its pretty >DEPRESSING< at first, but you will get it.... Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
confusion Posted January 4, 2006 Author Report Share Posted January 4, 2006 Mike, I really appreciate the info. the problem is, i'm not getting pcm data or any of that. am i missing a step that is a "given" to knowledgable guys? do i need a jumper wire in the adld or something? just guessing here. i've gotten the isc out and am taking it apart. joe Link to comment Share on other sites More sharing options...
BodybyFisher Posted January 4, 2006 Report Share Posted January 4, 2006 You need to PRESS and HOLD OFF and WARMER to get into DIAGNOSTICS, when PCM comes up use the guides Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
confusion Posted January 4, 2006 Author Report Share Posted January 4, 2006 i'm with you there bro. the problem is after the codes run. the info i'm putting in doesn't do what the chart says. joe Link to comment Share on other sites More sharing options...
adallak Posted January 4, 2006 Report Share Posted January 4, 2006 i'm with you there bro. the problem is after the codes run. the info i'm putting in doesn't do what the chart says. joe As a temporary measure (just to get the car running) you can disconnect the ISC motor from the connector and by turning the plunger adjust its position so that the TB plates' lever would lean on it, thereby defining the minimum throttle and RPMs say at 600. You might need to press and hold the gas pedal at cold start ups to prevent stalling, but as soon as the engine reaches the operating temperatures you should be fine. Later you can return to ISC motor related procedures. I know they may be frustrating, particularly if you have to address several issues simultaneously. Good luck! The saddest thing in life is wasted talent Link to comment Share on other sites More sharing options...
confusion Posted January 4, 2006 Author Report Share Posted January 4, 2006 i'm with you there bro. the problem is after the codes run. the info i'm putting in doesn't do what the chart says. joe As a temporary measure (just to get the car running) you can disconnect the ISC motor from the connector and by turning the plunger adjust its position so that the TB plates' lever would lean on it, thereby defining the minimum throttle and RPMs say at 600. You might need to press and hold the gas pedal at cold start ups to prevent stalling, but as soon as the engine reaches the operating temperatures you should be fine. Later you can return to ISC motor related procedures. I know they may be frustrating, particularly if you have to address several issues simultaneously. Good luck! thanks for that. i'll disconnect the plug. it seems that even when the plunger is retracted as far as it will go, it's still too far out anf holds the throttle plate open just a bit. it's clicking like crazy when the engine is turned off. i took it off and cleaned it but i think it's worse. must be shot.i turned in the plunger as far as it will go and it's still opening the throttle. joe i'm with you there bro. the problem is after the codes run. the info i'm putting in doesn't do what the chart says. joe As a temporary measure (just to get the car running) you can disconnect the ISC motor from the connector and by turning the plunger adjust its position so that the TB plates' lever would lean on it, thereby defining the minimum throttle and RPMs say at 600. You might need to press and hold the gas pedal at cold start ups to prevent stalling, but as soon as the engine reaches the operating temperatures you should be fine. Later you can return to ISC motor related procedures. I know they may be frustrating, particularly if you have to address several issues simultaneously. Good luck! thanks for that. i'll disconnect the plug. it seems that even when the plunger is retracted as far as it will go, it's still too far out anf holds the throttle plate open just a bit. it's clicking like crazy when the engine is turned off. i took it off and cleaned it but i think it's worse. must be shot.i turned in the plunger as far as it will go and it's still opening the throttle. joe yeah, i disconnected the plug and the idle is still too high. not extremely high, but still too high. especially for cold starts. joe Link to comment Share on other sites More sharing options...
adallak Posted January 4, 2006 Report Share Posted January 4, 2006 i'm with you there bro. the problem is after the codes run. the info i'm putting in doesn't do what the chart says. joe As a temporary measure (just to get the car running) you can disconnect the ISC motor from the connector and by turning the plunger adjust its position so that the TB plates' lever would lean on it, thereby defining the minimum throttle and RPMs say at 600. You might need to press and hold the gas pedal at cold start ups to prevent stalling, but as soon as the engine reaches the operating temperatures you should be fine. Later you can return to ISC motor related procedures. I know they may be frustrating, particularly if you have to address several issues simultaneously. Good luck! thanks for that. i'll disconnect the plug. it seems that even when the plunger is retracted as far as it will go, it's still too far out anf holds the throttle plate open just a bit. it's clicking like crazy when the engine is turned off. i took it off and cleaned it but i think it's worse. must be shot.i turned in the plunger as far as it will go and it's still opening the throttle. joe Since the motor is done, take a saw and cut the plunger's screw to proper size. Let it work as a stopper for minimum RPM. Later you can order new motor and imstall it in accordance with the directions Mike kindly provided you with. The saddest thing in life is wasted talent Link to comment Share on other sites More sharing options...
confusion Posted January 4, 2006 Author Report Share Posted January 4, 2006 i'm with you there bro. the problem is after the codes run. the info i'm putting in doesn't do what the chart says. joe As a temporary measure (just to get the car running) you can disconnect the ISC motor from the connector and by turning the plunger adjust its position so that the TB plates' lever would lean on it, thereby defining the minimum throttle and RPMs say at 600. You might need to press and hold the gas pedal at cold start ups to prevent stalling, but as soon as the engine reaches the operating temperatures you should be fine. Later you can return to ISC motor related procedures. I know they may be frustrating, particularly if you have to address several issues simultaneously. Good luck! thanks for that. i'll disconnect the plug. it seems that even when the plunger is retracted as far as it will go, it's still too far out anf holds the throttle plate open just a bit. it's clicking like crazy when the engine is turned off. i took it off and cleaned it but i think it's worse. must be shot.i turned in the plunger as far as it will go and it's still opening the throttle. joe Since the motor is done, take a saw and cut the plunger's screw to proper size. Let it work as a stopper for minimum RPM. Later you can order new motor and imstall it in accordance with the directions Mike kindly provided you with. Adallac, the motor is fine.(well it was till i started changing the egr valve) lol. it only has 74000 miles on it. no problems with it till i started this. however, i can still cut the plunger, i suppose. i think it's in all the way. i guess if i have to, i can cut the head of the screw off. i'll need a new isc anyway. thanks joe Link to comment Share on other sites More sharing options...
adallak Posted January 4, 2006 Report Share Posted January 4, 2006 i'm with you there bro. the problem is after the codes run. the info i'm putting in doesn't do what the chart says. joe As a temporary measure (just to get the car running) you can disconnect the ISC motor from the connector and by turning the plunger adjust its position so that the TB plates' lever would lean on it, thereby defining the minimum throttle and RPMs say at 600. You might need to press and hold the gas pedal at cold start ups to prevent stalling, but as soon as the engine reaches the operating temperatures you should be fine. Later you can return to ISC motor related procedures. I know they may be frustrating, particularly if you have to address several issues simultaneously. Good luck! thanks for that. i'll disconnect the plug. it seems that even when the plunger is retracted as far as it will go, it's still too far out anf holds the throttle plate open just a bit. it's clicking like crazy when the engine is turned off. i took it off and cleaned it but i think it's worse. must be shot.i turned in the plunger as far as it will go and it's still opening the throttle. joe Since the motor is done, take a saw and cut the plunger's screw to proper size. Let it work as a stopper for minimum RPM. Later you can order new motor and imstall it in accordance with the directions Mike kindly provided you with. Adallac, the motor is fine.(well it was till i started changing the egr valve) lol. it only has 74000 miles on it. no problems with it till i started this. however, i can still cut the plunger, i suppose. i think it's in all the way. i guess if i have to, i can cut the head of the screw off. i'll need a new isc anyway. thanks joe One of our fine members recently posted the procedure to service'repair an ISC motor. Unfortunately, I do not remember who was it. Do not cut the head, cut the body to proper length. I believe it still will be long enough to be reused. The saddest thing in life is wasted talent Link to comment Share on other sites More sharing options...
confusion Posted January 4, 2006 Author Report Share Posted January 4, 2006 update, i removed the isc and the throttle now closes all the way. i"m going to set the tpc(thanks mike) i'm going to order a new isc. thanks adallac. wish me well and thanks for all the help. you guys are great. joe Link to comment Share on other sites More sharing options...
BodybyFisher Posted January 4, 2006 Report Share Posted January 4, 2006 Good Luck, Mack Keep us posted Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
confusion Posted January 4, 2006 Author Report Share Posted January 4, 2006 Good Luck, Mack Keep us posted how do i set my controls to follow responses to a particular thread? i seem to have to navigate all over the place. and never know when someone has responded. Link to comment Share on other sites More sharing options...
BodybyFisher Posted January 4, 2006 Report Share Posted January 4, 2006 You can get an email, you need to set that in your MY CONTROLS or you can stay on this level http://caddyinfo.ipbhost.com/index.php?showforum=3 and hit REFRESH on your browser and see if new posts exist, Mike Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
confusion Posted January 4, 2006 Author Report Share Posted January 4, 2006 You can get an email, you need to set that in your MY CONTROLS or you can stay on this level http://caddyinfo.ipbhost.com/index.php?showforum=3 and hit REFRESH on your browser and see if new posts exist, Mike thanks for that. that's a big help. Link to comment Share on other sites More sharing options...
confusion Posted January 4, 2006 Author Report Share Posted January 4, 2006 You can get an email, you need to set that in your MY CONTROLS or you can stay on this level http://caddyinfo.ipbhost.com/index.php?showforum=3 and hit REFRESH on your browser and see if new posts exist, Mike thanks for that. that's a big help. aha, found a slight leak at the egr valve. have the throttle body off now. joe Link to comment Share on other sites More sharing options...
BodybyFisher Posted January 4, 2006 Report Share Posted January 4, 2006 Good, use a new EGR gasket (about $5.00). Why did you take the TB off? Now that you have it off, it will be easier to clean the EGR ports under it now. If they seem to be loose, that's OK, they are not pressed in tight.. Just rod them out when a hanger. Does the TB plate close manually now that its off? Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
confusion Posted January 4, 2006 Author Report Share Posted January 4, 2006 mike, sorry i didn't see your post before i put everything back together. the egr valve was a little loose. it is new so the gasket is also. adallac told me the best way to do the egr was take the throttle body off. he was right. know how to do all that now. the throttle plate does close with it off. and now it's closed after install. still high idle. the only thing i can think of now is the egr valve itself. it came with some washers that i thought were for the mounting bolts. after the fact i realized they were to make the hole in the bottom of the egr valve the same size as the original. i don't see how that would cause these symptoms though, unless somehow vaccum is leaking out of the egr itself. i must have missed something obvious(to a mechanic) getting a bit discouraged with it. want to fix it myself. thanks for the help, dudes. joe Link to comment Share on other sites More sharing options...
adallak Posted January 4, 2006 Report Share Posted January 4, 2006 mike, sorry i didn't see your post before i put everything back together. the egr valve was a little loose. it is new so the gasket is also. adallac told me the best way to do the egr was take the throttle body off. he was right. know how to do all that now. the throttle plate does close with it off. and now it's closed after install. still high idle. the only thing i can think of now is the egr valve itself. it came with some washers that i thought were for the mounting bolts. after the fact i realized they were to make the hole in the bottom of the egr valve the same size as the original. i don't see how that would cause these symptoms though, unless somehow vaccum is leaking out of the egr itself. i must have missed something obvious(to a mechanic) getting a bit discouraged with it. want to fix it myself. thanks for the help, dudes. joe Yes the washers are actually a set of orifices to customize your EGR valve. EGR is disabled at idle (the EGR solenoid is closed and EGR valve should be closed too). Do you have high RPMs with throttle plates completely closed? The saddest thing in life is wasted talent Link to comment Share on other sites More sharing options...
BodybyFisher Posted January 4, 2006 Report Share Posted January 4, 2006 Now that you have had the TB off, you will need to make sure the TPS, and ISC is adjusted properly. I am not sure what you mean by washers, but I would be throwing that aftermarket EGR valve as far as I can and buying an OEM...the guru who used to frequent this site informed us that its a no-no to use an aftermarket EGR. I think you would do better by cleaning your old EGR and installing it. Its probably fine. Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
confusion Posted January 4, 2006 Author Report Share Posted January 4, 2006 i'll try that. thanks, joe adallac, yes the idle is high with the throttle plate closed. Link to comment Share on other sites More sharing options...
confusion Posted January 5, 2006 Author Report Share Posted January 5, 2006 update, put the old egr back on. still idling high and running rough.also i noticed the spark knock/detonation thing again. i'll need a new egr valve. i took the isc off for now and am going to replace it also. is it possible that one of the plugs are fouled? will this cause the engine to over-compensate? the only thing i haven't rechecked is the fuel rails to see if they are properly seated. i'm still getting error 98. no big help there. gonna keep on it. thanks for all the help. joe Link to comment Share on other sites More sharing options...
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