» » »

Chevrolet Q&A

Ask Your Question

1997 Chevrolet S10 Question: while at idle the engine has a small hesatation

 

Question

jasondss, V6, Martinez, CA, March 27, 2009, 13:55
 Rookie

I have a advansed code reader - all checks out good - i think it may of been a 02 sencor, it runs great @ 260,000 miles -- its my baby --again no performance issue--rpm drops ever so slight at the split second hesatation

2 Answers
Flag This
  • Medium-star Best Answer
    Russ March 27, 2009, 14:15
     Master

    When do you feel the hesitation? Accelerating from a stop? Something you describe a ever so slight my be very difficult to find the cause of. If there are a lot of miles on your fuel pump this could be the first sign of a weakening pump.

    Flag This
  • Reply

    jasondss, March 28, 2009, 20:07
     Rookie

    I feel it only at stop "red light" - i'm on the 3rd fuel pump.. it goes out every 120,000 almost on the mile "no joke".. I use a mix of 87 & 89 octaine + a redline fuel tritment every 10,000-12,000 miles-- plugs/wires i change every 60'000...distributer is new about 210,000 - i have an msd coil/msd box/ msd wiring harness.. as well all kinds of air / fuel performance parts . belive me its a needle in a hay stack - but i saw you guys on the news the other night, so I thought i would give you a try - Thank you for your time/info :)

    Flag This
  • Reply

    Visitor, September 06, 2010, 09:55

    OK I feel very stupid on this one I have been overfilling the oil for a few years now ---- once i found this out it had got rid of the heasatation i had put 5.0 qts ......when it takes 4.5 qts ... its running better than ever

    Reply
    Flag This
  • Answer #2

    boonognog July 09, 2010, 11:10
    Profile_thumbnail
     Rookie

    hey -- i know it's been over a year, but i was trying to do some easy research on an a/c problem i'm having and saw this question...

    just wanted to throw out there that the used mazda i had also had a hesitation at idle. problem turned out to be the intake manifold gasket needed to be replaced, was no longer sealing...

    the way we tested for this was simple. take a can of engine starter fluid and spray around where the manifold gasket should be sealing. if there is a bad seal, it will suck that starter fluid spray inside and make the engine choke.

    just a thought... hope you got it fixed!

    Flag This
  • Reply

    Visitor, September 06, 2010, 09:56

    OK I feel very stupid on this one I have been overfilling the oil for a few years now ---- once i found this out it had got rid of the heasatation i had put 5.0 qts ......when it takes 4.5 qts ... its running better than ever

    Reply
    Flag This