Question about 1995 GMC Sierra

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1995 GMC Sierra

I have 1995 GMC Sierra with a 4.3L engine. It will not idle and will shut off unless you keep your foot on the gas. When driving and attempting to accelerate, it bogs down. We have changed fuel filter, oxygen sensor, plugs, distributor cap and rotor, checked fuel pump and still have the problem. The computer when tested gives the code 44 which says lean exhaust. We have tested and changed oxygen sensor. Any suggestions of what to check next?

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Check you ideler sensor i had the same problem on

Posted on Oct 07, 2008

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Just a thought, have you checked yout TPS(throttle position sensor)? I had similar problems with my 89 GMC Jimmy 4.3l, however a code 44 is strange. Also check to see if your problems go away if you advance the timing a few degree's.

Hope this helps

Posted on Jun 15, 2008

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