1989 GMC S15 Fuel trouble

Tiny
MATTHEW NELSON
  • MEMBER
  • 1989 GMC S15
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 100,000 MILES
My truck is flooding and I have to floor it to start it. Could you please help me?
Saturday, March 29th, 2008 AT 5:17 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the fuel pressure regulator could be leaking and injector/s stuck open
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Saturday, March 29th, 2008 AT 5:41 PM
Tiny
KURTEE
  • MEMBER
  • 1 POST
I had the same thing happen to my 89 Jimmy 4X4.
It was the temperature sensor on the intake manifold.
When I plugged my homemade computer interface in the temp reading was showing -20 degrees and the fuel was pouring in.
I then disconnected the sensor and the car started running better.
Looking at the temp reading by the computer it showed -40.
Ha, open circuit meant that the computer put in a general fuel mix and that made it run better.
So I went to the auto parts store, got a new temp sensor and my problem went away!

Hope this helped!

Kurt.
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Sunday, November 16th, 2008 AT 10:40 AM

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