Jump to content
CaddyInfo Cadillac Forum

Engine Die's


Marcus815

Recommended Posts

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


  • Replies 62
  • Created
  • Last Reply

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

2016 Cadillac ATS-V gray/black

Follow me on: Twitter Instagram Youtube

Link to comment
Share on other sites

You need to pull the OBD I codes and post them here. Here's how:

http://www.caddyinfo.com/readingcodes.html

CTS-V_LateralGs_6-2018_tiny.jpg
-- 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

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

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

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

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

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

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

The whole thing looks like a bad fuel pump to me.

CTS-V_LateralGs_6-2018_tiny.jpg
-- 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

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

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

2016 Cadillac ATS-V gray/black

Follow me on: Twitter Instagram Youtube

Link to comment
Share on other sites

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

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

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

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

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

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

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

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

Archived

This topic is now archived and is closed to further replies.

  • Recently Browsing   0 members

    • No registered users viewing this page.



×
×
  • Create New...