weird problem

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04-18-2005, 12:45 PM

9maxima5

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weird problem

Guys when i an driving on any road my car will all of a sudden like drop rpm's and then hesitate until i hit the gas a little more than it all goes away. It doesn't do it when the engine is cold any reasons? Iacv valve? It is real annoying and it happens like all the times. Thanks in advance

04-18-2005, 01:13 PM

aleveran

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Any ECU codes?

04-18-2005, 01:20 PM

cam_honestiam

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Tough to diagnose with only those symptoms. Stick or Auto? When does this happen: all the time, when you are accelerating/decelerating?

04-18-2005, 01:26 PM

9maxima5

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no codes its an auto it happens when i do both accererate and when i just keep the pedal steady.

04-18-2005, 01:30 PM

aleveran

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Does your problem reproducible constantly? Did you use low grade fuel recently?

04-18-2005, 01:32 PM

9maxima5

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nope i use 93 and it does it all the damn time

04-18-2005, 01:37 PM

aleveran

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If you say ‘check engine light’ is not on, than the knock sensor alone is the only one that will not cause ‘check engine light’ to show up. Did you try to read ECU codes anyway?

04-18-2005, 01:41 PM

aleveran

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Currently I’m dealing with hesitation during acceleration problem. But I got codes:
09 01 - Front Right Htd 02 sensor heater
03 04 - Knock Sensor
10 08 - EVAP canister purge volume control valve
01 01 - Camshaft Position Sensor

0101 - is most likely the one responsible for it.

04-18-2005, 01:53 PM

9maxima5

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I went to the dealer the other day and the only code was knock sensor. Could that be the problem?

04-18-2005, 02:20 PM

#10

aleveran

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At some extend, Yes.
If knock sensor recorded by ECU the engine goes on the ‘save mode’ and that could affect performance. Try to reset ECU and see if it helps.
Also, search threads about knock sensor problem. Where are lots of threads on this.

04-18-2005, 04:55 PM

#11

9maxima5

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thanks alerveran but I did do some research and i couldn't find nothin that makes the sensor do this to the car. Weird *** stuff but thans again u been a good help.