whats wrong?
#1
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whats wrong?
When I punch the gas (not even all the way) the car almost acts like its going to stall, itll do nothing then jerk forward for a second then nothing and jerk forward again. Whats the problem?
#2
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Could be a number of things.
Does the ses light come on when this happens?
How does it idle, can you rev it up fine?
Could be a vacuum hose came off, ignition/spark,....tranny etc.
Does the ses light come on when this happens?
How does it idle, can you rev it up fine?
Could be a vacuum hose came off, ignition/spark,....tranny etc.
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Originally Posted by PontiacDad
Could be a number of things.
Does the ses light come on when this happens?
How does it idle, can you rev it up fine?
Could be a vacuum hose came off, ignition/spark,....tranny etc.
Does the ses light come on when this happens?
How does it idle, can you rev it up fine?
Could be a vacuum hose came off, ignition/spark,....tranny etc.
it idles fine
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Re: whats wrong?
For starters, seperate what the motor is doing vs. what the car is doing.
When you go to full throttle from idle, is the engine accelerating smoothly per the tach in the panel even though the car is moving in fits and starts? (The difference is a transmission problem as opposed to an engine problem.)
Another way to look at this...with the transmission in park, does the engine rev freely? (this is seeing of the engine will accelerate off idle with no load from the transmission on it.)
SES..."Service Engine Soon" or "Check Engine" light in the dash...the computers way of telling you that it thinks a problem exists
When you go to full throttle from idle, is the engine accelerating smoothly per the tach in the panel even though the car is moving in fits and starts? (The difference is a transmission problem as opposed to an engine problem.)
Another way to look at this...with the transmission in park, does the engine rev freely? (this is seeing of the engine will accelerate off idle with no load from the transmission on it.)
SES..."Service Engine Soon" or "Check Engine" light in the dash...the computers way of telling you that it thinks a problem exists
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Re: whats wrong?
Originally Posted by clm2112
For starters, seperate what the motor is doing vs. what the car is doing.
When you go to full throttle from idle, is the engine accelerating smoothly per the tach in the panel even though the car is moving in fits and starts? (The difference is a transmission problem as opposed to an engine problem.)
When you go to full throttle from idle, is the engine accelerating smoothly per the tach in the panel even though the car is moving in fits and starts? (The difference is a transmission problem as opposed to an engine problem.)
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Originally Posted by velvetdreams21
Originally Posted by PontiacDad
Could be a number of things.
Does the ses light come on when this happens?
How does it idle, can you rev it up fine?
Could be a vacuum hose came off, ignition/spark,....tranny etc.
Does the ses light come on when this happens?
How does it idle, can you rev it up fine?
Could be a vacuum hose came off, ignition/spark,....tranny etc.
it idles fine
We really need more information to help you out. But lets start with some easy stuff. Have you checked your plugs? How about your plug wires? Make sure none are grounded, burnt. make sure plugs are not fouled, dirty, worn out. Once you check these we can move on. If possible, get a picture of the plugs for us to take a look at.
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When I bought the car I was told it was given a complete tune up (was told after I paid and everything so I knew he wasnt saying it just to sweeten the deal), it was only bought about 2 weeks ago and has barely been driven at all, maybe a grand total of 50 miles
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Re: whats wrong?
Originally Posted by velvetdreams21
it always sounds like the engine is dying kinda. When I drive it normally without punchin the gas it seems to drive just fine.
What normally happens when you snap the throttle open is the computer (ECM) sees the throttle going open from the TPS sensor, and it should also see the vac dump (MAP sensor) and an increase if MAF sensor readings. It uses that to guess how much fuel the motor is going to need to accelerate as fast as possible (as well as ignition timing changes)
Now...1.) Have you made any changes to the motor or it'* induction system? 2.) Do you have a scan tool available to you so you can see what the computer is seeing from the sensors?
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Originally Posted by velvetdreams21
When I bought the car I was told it was given a complete tune up (was told after I paid and everything so I knew he wasnt saying it just to sweeten the deal), it was only bought about 2 weeks ago and has barely been driven at all, maybe a grand total of 50 miles
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Re: whats wrong?
Originally Posted by clm2112
Now...1.) Have you made any changes to the motor or it'* induction system? 2.) Do you have a scan tool available to you so you can see what the computer is seeing from the sensors?