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'99 seville startup problem


connorjon

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Hi,

I just decided to post this to see if anyone had any idea what could be going on with my car. I own a '99 seville SLS and it seems that about 20 minutes after I've driven it and the engine is still warm it takes about a half minute to start. It will just keep cranking and cranking. If the engine is cool, the car always starts right away. Also, sometimes once the car has started, my rpms will go really low and then shoot back up and sometimes the car even dies (only right after ignition.) Everything seems to be working perfectly when I'm driving and I've never had any problems other than during startup. This problem has been going on for about 6 months and I was wondering if it sounds like my FPR? Any help is appreciated!

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Yes it sounds like a FPR

Pull the vacuum hose off of it and look for fuel spitting from it both with the engine stopped and with it running any fuel at all replace it.

Also, check for codes, go to the top of this page, click HOW TO, then DTC CODES, look for your year and follow the directions and post the codes here

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

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Yes it sounds like a FPR

Pull the vacuum hose off of it and look for fuel spitting from it both with the engine stopped and with it running any fuel at all replace it.

Also, check for codes, go to the top of this page, click HOW TO, then DTC CODES, look for your year and follow the directions and post the codes here

I've checked the codes before and only had the following:

ABS C1252

ABS C1253

ABS U1255

PCM 1652

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Yes it sounds like a FPR

Pull the vacuum hose off of it and look for fuel spitting from it both with the engine stopped and with it running any fuel at all replace it.

Also, check for codes, go to the top of this page, click HOW TO, then DTC CODES, look for your year and follow the directions and post the codes here

I've checked the codes before and only had the following:

ABS C1252

ABS C1253

ABS U1255

PCM 1652

Check the PCM 1652 again, to see if its a "P" code, if it is, this is the meaning

P1652 - Powertrain Induced Chassis Pitch Output Circuit

I have never seen that before

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

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Yes it sounds like a FPR

Pull the vacuum hose off of it and look for fuel spitting from it both with the engine stopped and with it running any fuel at all replace it.

Also, check for codes, go to the top of this page, click HOW TO, then DTC CODES, look for your year and follow the directions and post the codes here

I've checked the codes before and only had the following:

ABS C1252

ABS C1253

ABS U1255

PCM 1652

Check the PCM 1652 again, to see if its a "P" code, if it is, this is the meaning

P1652 - Powertrain Induced Chassis Pitch Output Circuit

I have never seen that before

yes that's it. That's another problem that I cant seem to figure out.. It limits my car to 90 mph and I get the Speed Limited to 90 message in the dic everytime I start the car

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Check your FPR first, we will try to figure out what that code is.

Hard starting warm/hot is usually an indication of a bad FPR

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

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Here is some info on the P1652, this is definately your reduced speed problem.

http://www.gearchatter.com/viewtopic10122.php

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

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That code has to do with the PITCH UP/DOWN of the car. It detects when the brakes are mashed hard, the nose dive, and it FIRMS up the suspection, it also does the same on hard acceleration, when the nose comes up hard, it FIRMS the suspension.

Something is wrong with that system

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

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I've checked the codes before and only had the following:

ABS C1252

ABS C1253

ABS U1255

PCM 1652

None of these trouble codes are related to your starting issue.

Your P1652 and the two C codes relate to a data link between the suspension control module (CVRSS) and the powertrain control module (PCM). And these three codes are behind the "SPEED LIMITED" message. I would try clearing all the codes and see which codes, if any, show up after a test drive (or several test drives).

It would also be a good idea to separate the starting issue from the "SPEED LIMITED" by starting another thread.

Jim

Drive your car.

Use your cell phone.

CHOOSE ONE !

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