1991 Buick Century failure to run

AUTOMECHD

MEMBER
1991 BUICK CENTURY
6 CYL
FWD
AUTOMATIC
111,000 MILES

The car starts but turns off after a few seconds. I put in a new fuel pump, fuel filter, fuel regulator, new spark plugs, it sparks just won't stay running. What could the problem be?

Saturday, November 14th, 2009 AT 6:32 PM

3 Replies

JDL

MECHANIC
16,098 POSTS

Welcome to the forum, thanks for the donation. I saw what you replaced, I'd still have to use a gage and check fuel pressure.

I'm not sure of engine litre size? If you have the bypass ignition system, during cranking it is the ignition module that controls spark timing, after it starts the pcm controls spark timing. Are there any trouble codes?

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Sunday, November 15th, 2009 AT 2:12 PM

AUTOMECHD

MEMBER
3 POSTS

The car has no codes. Is a 3.3 engine. Does the tps has something to do, because I check in michell and it said that tps controls the fuel by the pcm. Is that possible?

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Sunday, November 15th, 2009 AT 6:03 PM

JDL

MECHANIC
16,098 POSTS

I guess anything is possible, did you check for trouble codes?

You place jumper wire between terminals A & B terminals of datalink connector. Turn key on, no crank, then the check engine lite starts flashing, you count the flashes to get the codes.

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Monday, November 16th, 2009 AT 8:53 AM