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93 cadillac sedan deville
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smilocc
New User
Apr 22, 2008, 10:52 PM
Post #1 of 7
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93 cadillac sedan deville
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my service engine and service car soon light comes on and off.and when they do my car strarts backfiring then missing even cut off but.but when the light cuts off its run smooth again.i just put a new fuel pump and even had a tune up done on it and a new fuel injector put on it can u tell me what the problem is?
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Double J
Veteran
/ Moderator
Apr 23, 2008, 12:06 AM
Post #2 of 7
(2095 views)
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Re: 93 cadillac sedan deville
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Stop at Autozone and have the computer scanned for the trouble codes.
They do it for free.
Then post them and someone should be able to help from there
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smilocc
New User
Apr 23, 2008, 6:23 AM
Post #3 of 7
(2089 views)
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Re: 93 cadillac sedan deville
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they said they have to be 97 on up to put on the computer they was my first option
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Apr 23, 2008, 8:18 AM
Post #4 of 7
(2085 views)
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Re: 93 cadillac sedan deville
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Ok: Count the pins in the connector. Caddies can be funky. It could be either a 12 pin or 16 pin connector. If 12 pin I have a chart for the codes you can get yourself with a paperclip - AYOR. I don't have the one or chart for 16 pin job.
12 pin jobs was just counting blinks of the check engine light which went in series of three times each the first was indicating that the puter was ok to talk to you or not. Don't be jumping things quite yet - let's get some info from these guys especially as it's a Caddy! Some of those you could hit certain buttons for assorted controls you already have and get codes I think??
T
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Double J
Veteran
/ Moderator
Apr 23, 2008, 4:04 PM
Post #5 of 7
(2080 views)
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Re: 93 cadillac sedan deville
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Thats too bad..my Autozone has both type scanners and will pull codes for these too.
Try this procedure...see if it works......
A.) Turn the ignition switch on ( B) Depress the OFF and WARMER buttons on the climate control panel at the same time until the segment check appears on the instrument panel.(C) Once the service mode is entered , any trouble codes that are stored in the computer memory will be displayed. Write down everything that appears...
TO CLEAR CODES A. Press the HI button on the climate control panel, this will cause the display to read ECM DATA. B. Press the LO button on the climate control panel until the display reads ECM CLEAR CODES. C. Now press the high button on the climate control panel and the display should read ECM CODES CLEAR. C. After 3 seconds all stored ECM codes will be erased.
Let us know if it works.
Jim
(This post was edited by JIM N on Apr 23, 2008, 4:06 PM)
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Apr 24, 2008, 12:30 AM
Post #6 of 7
(2071 views)
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Re: 93 cadillac sedan deville
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Why did I just know JIM would know how to do that?
T
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micahharlow
New User
Jul 7, 2008, 1:01 PM
Post #7 of 7
(1915 views)
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Re: 93 cadillac sedan deville
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Im having the same problem, I was told it was a PROM CHIP and ECD. I bought one but it had three hookups and the one I took out from behind the glove box only had 2. There was another small box right next to the main one but the insert didnt fit into the the third slot of the new one. Not sure when I buy one from autozone, the ecd should be taken care of .....is the prom chip in that small box? HELP
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