Marcus815 Posted July 20, 2007 Report Share Posted July 20, 2007 I ought to have asked this earlier, as it's a pretty serious problem perhaps. The engine on my '93 Seville has a tendency to die under the 3 following situations... 1) Immediately after I turn on the car and shift to Drive or Reverse it will occasionally die 2) When shifting to Park, Drive or Reverse regardless of how long the car has been on for it will occasionally die 3) When accelerating very quickly immediately after turning on the car it will occasionally die It has so far died only four times, but it happened in those three scenario's. My buddy thinks it is because the engine Idles too low, but I don't know. Any idea's? Link to comment Share on other sites More sharing options...
kens96 Posted July 20, 2007 Report Share Posted July 20, 2007 You can try cleaning the throttle body Link to comment Share on other sites More sharing options...
Ranger Posted July 20, 2007 Report Share Posted July 20, 2007 What is the idle RPM? Any codes? Link to comment Share on other sites More sharing options...
Bruce Nunnally Posted July 20, 2007 Report Share Posted July 20, 2007 Does your car idle too low? Have you replaced the fuel pressure regulator in the life of the car? Does it ever backfire during starting? Bruce 2023 Cadillac CT4-V Blackwing Follow me on: Twitter Instagram Youtube Link to comment Share on other sites More sharing options...
adallak Posted July 20, 2007 Report Share Posted July 20, 2007 A dirty throttle body ot stuck open EGR valve can cause 1 and 2, but not 3. The saddest thing in life is wasted talent Link to comment Share on other sites More sharing options...
Marcus815 Posted July 20, 2007 Author Report Share Posted July 20, 2007 I'm a bit embarrassed, I don't know what a lot of the things are that you guys are referring to. I saw no codes or new warnings appear on the screen, only the RPM's drop to Zero. Link to comment Share on other sites More sharing options...
Cadillac Jim Posted July 20, 2007 Report Share Posted July 20, 2007 You need to pull the OBD I codes and post them here. Here's how: http://www.caddyinfo.com/readingcodes.html -- Click Here for CaddyInfo page on "How To" Read Your OBD Codes-- Click Here for my personal page to download my OBD code list as an Excel file, plus other Cadillac data -- See my CaddyInfo car blogs: 2011 CTS-V, 1997 ETC Yes, I was Jims_97_ETC before I changed cars. Link to comment Share on other sites More sharing options...
Marcus815 Posted July 22, 2007 Author Report Share Posted July 22, 2007 Thanks. I was checking the codes this afternoon when I ran out of gas...in the parking spot. The meter said I had 5 gallons left and had used 15.8 gallons, but I knew it was off. Anyhow, I have to go fill up the little red bucket I keep in the trunk for just such an occassion, but pending I get that taken care of I'll check those codes. Right before It ran out of gas it said "No PCM Codes" or something of that nature, does that mean that there is nothing wrong or just that it didn't record it? Link to comment Share on other sites More sharing options...
rmac-etc Posted July 22, 2007 Report Share Posted July 22, 2007 There are ~6 categories of codes .. PCM is the first. Also, I don't think the engine needs to be running to get this info, so with or without gas you should be able to get the codes. Link to comment Share on other sites More sharing options...
BodybyFisher Posted July 22, 2007 Report Share Posted July 22, 2007 Right before It ran out of gas it said "No PCM Codes" or something of that nature, does that mean that there is nothing wrong or just that it didn't record it? You are NOT going to get a code for a FUEL LEVEL SENSOR that is out of wack. You need to replace the FUEL LEVEL SENSOR, it is part of the FUEL PUMP. Its about $300 for the part or so. No little red bucket is necessary, just keep it filled until you fix it. See Post #8 here from July 17th regarding the fuel level sensor: http://caddyinfo.ipbhost.com/index.php?sho...c=14037&hl= This dying you are getting could also be related to the fuel pump. I would check the connectors for looseness, corrosion, bad grounds, melted leads, etc (this could also be the problem with your fuel level). I would attach a fuel pressure gage to the fuel rail and see what the pressure is idling, running and when it dies. Get one with a long hose so you can tape it to the windshield and watch 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...
Marcus815 Posted July 23, 2007 Author Report Share Posted July 23, 2007 Well, the Gas issue I can deal with. I just fill it up once it hits ten gallons. As for the codes relating to the Engine Dieing, here you go, I hope it helps Identify the problem... Code I022 History Code I039 Current Code I052 History Link to comment Share on other sites More sharing options...
kens96 Posted July 23, 2007 Report Share Posted July 23, 2007 It doesn't look like these should make the engine die, but they could mean that there is a loose or dirty electrical connection, a bad ground, or a bad battery. Someone with more experience will weigh in. Here is what the code mean Code I022 History Panel Dimming Switch Pot Circuit Code I039 Current Loss of Road Sensing Suspension Data Code I052 History Keep Alive Memory Error Link to comment Share on other sites More sharing options...
BodybyFisher Posted July 23, 2007 Report Share Posted July 23, 2007 Well, the Gas issue I can deal with. I just fill it up once it hits ten gallons. As for the codes relating to the Engine Dieing, here you go, I hope it helps Identify the problem... Code I022 History Code I039 Current Code I052 History I039 .......................................... Loss of Road Sensing Suspension Data (Current) I022 .............................................. Panel Dimming Switch Pot Circuit I052 ....................................................... Keep Alive Memory Error (Battery must have been disconnected) None of these would create stalling or dying. 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...
Cadillac Jim Posted July 23, 2007 Report Share Posted July 23, 2007 The whole thing looks like a bad fuel pump to me. -- Click Here for CaddyInfo page on "How To" Read Your OBD Codes-- Click Here for my personal page to download my OBD code list as an Excel file, plus other Cadillac data -- See my CaddyInfo car blogs: 2011 CTS-V, 1997 ETC Yes, I was Jims_97_ETC before I changed cars. Link to comment Share on other sites More sharing options...
Marcus815 Posted July 23, 2007 Author Report Share Posted July 23, 2007 Hmm. Well, two things... Could you elaborate, if you may, a bit on what each of those means specifically? and... What do you recommend I do about each? Sorry about all the questions. Thanks for your time though. Marcus Link to comment Share on other sites More sharing options...
Bruce Nunnally Posted July 23, 2007 Report Share Posted July 23, 2007 The IO52 just ignore; it means the battery was disconnected sometime. The IO22 Panel Dimming Switch Pot Circuit you could check and clean the connections at the switch, but I am not sure how much of the dash you have to take apart to do that. As long as you can still set the panel brightness to the level you desire I would tend to also ignore this one. The IO39 Loss of Road Sensing Suspension Data (Current) indicates that one or more of your electronic suspension components is not responding appropriately. Could be a strut/shock needs replacing, or connector cleaning, or connection continuity problems. Search for previous mentions of IO39: http://caddyinfo.ipbhost.com/index.php?act...p;highlite=IO39 Bruce 2023 Cadillac CT4-V Blackwing Follow me on: Twitter Instagram Youtube Link to comment Share on other sites More sharing options...
Marcus815 Posted July 23, 2007 Author Report Share Posted July 23, 2007 That would make sense. Ever since I have driven and owned the car I have had the warning message "Service Ride Control" which was mentioned, I believe, In a previous thread relating the two. Link to comment Share on other sites More sharing options...
rmac-etc Posted July 23, 2007 Report Share Posted July 23, 2007 I concur with Jims_97_ETC ... I recently had some inexplicable random stalling issues and it turned out to be the fuel pump .. Not too hard to replace if the tank is empty, btw. Link to comment Share on other sites More sharing options...
up2ng Posted July 23, 2007 Report Share Posted July 23, 2007 I ought to have asked this earlier, as it's a pretty serious problem perhaps. The engine on my '93 Seville has a tendency to die under the 3 following situations... 1) Immediately after I turn on the car and shift to Drive or Reverse it will occasionally die 2) When shifting to Park, Drive or Reverse regardless of how long the car has been on for it will occasionally die 3) When accelerating very quickly immediately after turning on the car it will occasionally die It has so far died only four times, but it happened in those three scenario's. My buddy thinks it is because the engine Idles too low, but I don't know. Any idea's? ISC motor. This is a 4.9 correct ? Do you hear a noise like a gear turning when you shut the car off ? Link to comment Share on other sites More sharing options...
Marcus815 Posted July 23, 2007 Author Report Share Posted July 23, 2007 Yes, it is a 4.9. Come to think of it, I do hear sounds. I can't think of them all, although I will be certain to listen carefully next time. One that does stand out is the sound of something clicking and turning. The best thing I can relate the sound to is what an old hard drive writing data would sound like. Link to comment Share on other sites More sharing options...
up2ng Posted July 23, 2007 Report Share Posted July 23, 2007 Yes, it is a 4.9. Come to think of it, I do hear sounds. I can't think of them all, although I will be certain to listen carefully next time. One that does stand out is the sound of something clicking and turning. The best thing I can relate the sound to is what an old hard drive writing data would sound like. We have a winner ! Its the little motor on the front of the throttle body that controls idle speed. Not too expensive & not too hard to replace. Are you sure you didn't have p30 in the error codes ? Link to comment Share on other sites More sharing options...
Marcus815 Posted July 23, 2007 Author Report Share Posted July 23, 2007 Yes, I'm sure there was no such code. So that sound that I hear is a bad thing I, eh. Does this part we're talking about have an ID number or something so that I can look it up and find prices, or should I take a trip back to the junk yard? Secondly, has anyone replaced this before? I'm sure that's a stupid question, seems like you guys have done everything with anything on a Caddy, but it's still a viable question, haha. BTW, Thanks again for the help. Cash right now isn't at an all time high, so it would really be a pinch to take it to the mechanic. Much appreciated! Link to comment Share on other sites More sharing options...
Ranger Posted July 23, 2007 Report Share Posted July 23, 2007 Changing the ISC motor is pretty straight forward once you look at it. Just be sure to adjust it properly once installed. With the engine at idle, press on the plunger till it fully retracts. Then unplug it. Idle should drop to about 450 or may even stall. Now adjust the plunger so there is a .060 gap between it and the throttle lever. Plug it back in and give it a few drive cycles to "relearn". Link to comment Share on other sites More sharing options...
Marcus815 Posted July 23, 2007 Author Report Share Posted July 23, 2007 What exactly does it look like? I remember that when I was at the junk yard trying to get the trunk of that '94 Deville open, it had the same 4.9L engine as my car. Maybe I can take this ISC Motor off that engine and put it on mine, What do you think? Link to comment Share on other sites More sharing options...
BodybyFisher Posted July 23, 2007 Report Share Posted July 23, 2007 Here is Barry94's ISC Motor info with pictures: http://caddyinfo.ipbhost.com/index.php?sho...amp;#entry64103 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...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.