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1990 vandura 350 auto runs rich


gmburd
05-29-2009, 10:44 PM
I start my van and it starts to flood and run very rich to where it stalls out.

I started it the other day , ran ok for 5 min and then started to miss and then stall out. I have a manual switch for the fuel pump and by turning it on and off, i can keep it running.
help, Where do I look first/ What controlls the fuel flow?

thanks
Den:banghead:
maxwedge
05-30-2009, 03:31 PM
No easy answer here, excess fuel pressure, bad injector, bad coolant temp sensor all can cause this. THE cts is the most common issue here, a scanner would tell you if the pcm temp readings are accurate. If not replace the cts.
patbeechermail
05-30-2009, 11:57 PM
does your engine have a throttle body fuel injection?
gmburd
06-02-2009, 01:33 AM
update:

yes it is tbi. I took out the injectors and powered them on the bench and sprayed carb cleaner in the pintel. Reinstalled and seems to work fine. Van has been sitting all winter and I ran it for 1/2 hr monthly. Maybe old fuel as well.


Thanks for the replies.
Dennis

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