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1999 ACURA 3.5 RL

MY 3.5RL WILL NOT GO PAST 1500 RPMS OR 15 MPHS. AM I IN LIMP HOME MODE OR COULD THE THROTTLE POSITION SENSOR BE MY PROBLEM. ANY WAY I PUSH ON THE ACCELERATOR IT SLOWLY CREEPS UP TO 15 MPH ENLESS I LET IT HIT 1500 RPMS, THEN THE RPMS WILL JUMP BACK DOWN TO ABOUT 1250 AND FLUCTUATE BETWEEN 1250 - 1500 UNTIL I LET OFF THE GAS PEDAL. ALSO THE THROTTLE POSITION SENSOR ISN'T SCREWED OR BOLTED IT SEEMS RIVETED. DO I HAVE TO REPLACE THE WHOLE THROTTLE BODY ASSY?

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  • Ryan William
    Ryan William Oct 19, 2013

    Hey guys, thanks. I've had the car for about 2 months and put a little over 1000 miles on it and i've never had a check engine light. only a "mainte requid" light for the scheduled maintenance. I have run the diagnostics though but it doesn't give me any codes. I'm gonna try getting the manual from autozone.com. My buddy did tell me it could be bad gas too so I'll check that and the gas pedal.

  • Ryan William
    Ryan William Oct 19, 2013

    Hey guys, thanks. I've had the car for about 2 months and put a little
    over 1000 miles on it and i've never had a check engine light. only a
    "mainte requid" light for the scheduled maintenance. I have run the
    diagnostics though but it doesn't give me any codes. I'm gonna try
    getting the manual from autozone.com. My buddy did tell me it could be
    bad gas too so I'll check that and the gas pedal.

  • Ryan William
    Ryan William Oct 19, 2013

    Hey guys, thanks. I've had the car for about 2 months and put a little
    over 1000 miles on it and i've never had a check engine light. only a
    "mainte requid" light for the scheduled maintenance. I have run the
    diagnostics though but it doesn't give me any codes. I'm gonna try
    getting the manual from autozone.com. My buddy did tell me it could be
    bad gas too so I'll check that and the gas pedal.

  • Ryan William
    Ryan William Oct 19, 2013

    oops

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  • Cars & Trucks Master
  • 3,172 Answers

Hey Ryan,
Doubtful that bad gas is causing anything..you might have "filled up" and gotten a load of water... But it is probably the TPS... if you are not mechanically inclined... take this to a professional... the "riveted on" situation is so you will take it back to the dealer... if the new TPS has the same mounting holes. just carefully remove everything so you can dill out the rivets and use appropriate bolts and nuts and LOCKWASHERS...along with 292 locktite,

Posted on Jun 19, 2017

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Posted on Jan 02, 2017

billshoff
  • 23 Answers

SOURCE: car lurches and bucks, rpms erratic on acceleration on hills

You could have any of these problems:
1) vacuum leak- broken air hose or disconnected air hose.
2) water in the gasoline- add a water remover to you gas tank.
3) bad or disconnected spark plug wire(s).
If this were my Forester, I'd take it to a mechanic who has a electronic engine tester..

Posted on May 07, 2009

MNfisherman
  • 11896 Answers

SOURCE: 1999 pontiac grand am 4 cylinder rough idle, rpms fluxuates

Most likely your throttle position sensor is faulty. You could have a vacuum leak as well. Most probable cause is a bad sensor. Is your check engine light on? Have you checked your engine codes? You can go to autozone.com and register for full free online repair manual.

Posted on Sep 14, 2009

Testimonial: "the check engine light had been on but we unplugged the battery yesterday for a couple of hours and put it back in and the light isn't on anymore. "

airjer995
  • 5332 Answers

SOURCE: how to open the black box under the throttle body

The block box is the throttle control actuator. The actuator and throttle body is one assembly. Are you sure it isn't the sensor on the gas pedal itself?

Posted on Oct 26, 2010

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