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1990 buick century 3.3 6 cylinder hard to start idles fine dies when give it gas


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mickeysue71
New User

Nov 16, 2014, 4:37 PM

Post #1 of 4 (1074 views)
1990 buick century 3.3 6 cylinder hard to start idles fine dies when give it gas Sign In

We have replaced fuel filter, fuel pump and sender assembly, spark plugs, added fuel injector cleaner, unplugged torque converter connector. It is hard to start, idles fine, but when you give it gas it dies. What do we check next


(This post was edited by mickeysue71 on Nov 16, 2014, 4:43 PM)


Discretesignals
Ultimate Carjunky / Moderator
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Nov 16, 2014, 4:59 PM

Post #2 of 4 (1047 views)
Re: 1990 buick century 3.3 6 cylinder hard to start idles fine dies when give it gas Sign In

What is the fuel pressure?

Is the check engine light on? If so, jumper A to B in the diagnostic connector and count the flashes of the check engine light.





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mickeysue71
New User

Nov 16, 2014, 5:03 PM

Post #3 of 4 (1044 views)
Re: 1990 buick century 3.3 6 cylinder hard to start idles fine dies when give it gas Sign In

The check engine light is not on. Do not know fuel pressure


Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Nov 16, 2014, 5:08 PM

Post #4 of 4 (1034 views)
Re: 1990 buick century 3.3 6 cylinder hard to start idles fine dies when give it gas Sign In

You should connect a fuel pressure gauge to the fuel rail test port and verify you have good fuel pressure when the problems are occurring. Fuel pressure on that should be 40-47 psi. Just because you replaced the pump, without verifying it was the fault in the beginning, doesn't mean you have good fuel pressure now. That would be a place to start.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.






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