Mechanics

HESITATES GOING UP HILL IN HOT WEATHER

2002 Chevrolet Impala • 60,000 miles

I noticed on a hot day turning a corner that if I push down on the accelerator too hard that the car hesitates/lurches. I thought that it might be the transmission, but in cold weather or when the engine is running in cool weather I can stomp on it and it does not happen. When I leave the trans in 3rd, it still does it. The car is well maintained. What are the easy fixes that I should try first before taking it to the mechanic?
Thanks in advance!


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Henrys
July 20, 2012.



See if it gets worse with the ac on if the ac works?Also have you checked for codes in the computer?

Saturntech9
Jul 20, 2012.
Yes the air cond. Works very well and the hesitation happens if it is on or off. The check engine light has not turned on. Any way to check codes without a handheld reader?

Tiny
Henrys
Jul 20, 2012.
I was asking if it was worse with the ac on?Also no way to check codes on that car without atleast a code reader. Amazon has the basic one for like 20 and you can get one that reads some live data for 50 something on amazon.

Saturntech9
Jul 20, 2012.
It is worse with the air on. Will I get codes without the check engine light in?

Tiny
Henrys
Jul 21, 2012.
You can still have codes without a check engine light. If its worse with the ac on it could be spark plug wires spark plugs etc.

Saturntech9
Jul 21, 2012.
I also noticed that at times, when I step on it that there is a sound like a tuning harp that comes from what sounds like behind the radio. Vacuum leak. Think its related?

Tiny
Henrys
Jul 22, 2012.
Could be a vacuum leak but really dont think its related. So is it worse with the ac on?

Saturntech9
Jul 23, 2012.
Yes, it is worse with ac on.

Tiny
Henrys
Jul 23, 2012.
Sounds like it could be the ignition system have you checked the plugs and wires?

Saturntech9
Jul 24, 2012.
I looked under the hood and did not see any sparks jumping. Any other easy way to check?

Tiny
Henrys
Jul 24, 2012.
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