Question about 1998 GMC Jimmy

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Hard starting after sitting awhile

My 98 jimmy takes several cranks to get started after sitting overnight or longer. After it starts it seems to run fine. No hesitation or stalling. Installed new pump a year ago along with filter. Is it possible for the pressure or gas to leak down? Can hear pump running and shut off before trying to start. This can take up to 4-5 times. Then everything is wonderful. I have a 1999 with the same problem and I took the air intake apart(where the air filter is located) and the air filter is clean:and the car started. I think it may be a air intake sensor. I'm not sure. I need 2 ck the fuel pump pressure.

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  • pwillro Feb 05, 2009

    I have the same problem 98 jimmy with 108,000 miles !!!!

  • bassmen6 Feb 06, 2009

    I have same problem with 1996 S10 V6. I am going to check my fuel pressure this weekend. Sometimes it won't start at all after sitting a few days. I can spray ether or put gas in top of TBI (remove air cleaner) and it will start right up. Runs fine after starts.

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If before you start if you hold the gas pedal just a bit does it start faster if it does its our idle air control valve that defective (iac) let me now pierre

Posted on Jan 25, 2009

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No brake lights to outside lights but centre light works replace bulbs but still nothing

Posted on Jan 30, 2009

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SOURCE: hard starting after sitting awhile

I posted the second problem, I did get my car fixed. the problem was a weak fuel pump

Posted on Jan 19, 2009

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