1998 Chevy Camaro hesitation whencold

Tiny
GARRETBERG
  • MEMBER
  • 1998 CHEVROLET CAMARO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 113,000 MILES
This is my sons first car when car is first started and driven it hesitates when you hit the throttle or let off then hit again when car warms up no issues only codes I have got are evap. Code which went away with new gas cap also horrible mileage
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Monday, October 11th, 2010 AT 5:21 PM

5 Replies

Tiny
HMAC300
  • EXPERT
Horrible fuel mileage on this car can be attributed to two things, a yong kid with a heavy foot or something wrong with the engine. As you are not getting any codes and it acts up cold that's a hint that it's a basic problem. I"d check for a vacuum hose off or soft and leaking. When its warm the computer is trying to compensate for the vacuum leak-hence richining the mix letting car run ok but giving poor fuel mileage. That is the first thing i'd check for is the vacuum leak via the hoses. After that have the engine scanned again someting may come up.
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Tuesday, October 12th, 2010 AT 7:58 PM
Tiny
GARRETBERG
  • MEMBER
He can not drive yet I drive it will check vacuume lines and let you know thanks
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Tuesday, October 12th, 2010 AT 8:29 PM
Tiny
HMAC300
  • EXPERT
A couple of things I forgot were to change teh fuel filter as you just got the car and you don't know when it was last changed, and take the air duct off and take choke cleaner and clean the throttle plate on both sides as they tend to gunk up with oil and then stick closed and operate poorly. Also check the air duct for holes between the throttle plate and maf sensor.
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Wednesday, October 13th, 2010 AT 10:13 AM
Tiny
GARRETBERG
  • MEMBER
My son is not quite 151/2 yet 2 weks hers is what I have donebefore asking on here, clean throttle body, changed oil seadoam, fuel filter, better fuel airfilter, gas cap.
Will work on vacuume lines next couple of days. Forgot to mention throttle body sound really noisey see, s to quite as car warms when I said bad mileage my wifes 2000 firebird with the V6 gets about 350 to a tank my sons car gets about 240 to a tabk
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Wednesday, October 13th, 2010 AT 3:14 PM
Tiny
HMAC300
  • EXPERT
Another thing if you can get a vacuum gauge on it is to check vacuum at idle. If it's around 15" you'll have to check for a plugged converter. It should be around 20" also while the throttle body is noisy, spray some choke cleaner around it as it may be leaking at the throttle shaft.
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Wednesday, October 13th, 2010 AT 8:07 PM

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