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1999 Acura TL RPMs

Tiny
SKM1969
  • MEMBER
  • 1999 ACURA TL
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 238,000 MILES
What makes a TL start making rpms rev up and down in park and in neutral and excessive rpm's in drive? I think I have confused my computer/sensors with some intake cleaner I put in it.(?) I am scared to death of what the diagnosis may be. Please help!
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Monday, March 16th, 2009 AT 11:34 AM

10 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
How was intake cleaner introduced to engine?
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Monday, March 16th, 2009 AT 1:10 PM
Tiny
SKM1969
  • MEMBER
  • 6 POSTS
I work for the largest oil supplier in the southeast, so we also have alot of chemicals (some very old, like what I used) I really don't think it was a good idea for me to use it. I put prem. Gas and sometimes injector cleaner, but that's it. I was trying to make it perform better by putting the intake cleaner in it, when actually there was nothing wrong with the performance. BIG GOOF
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Monday, March 16th, 2009 AT 1:35 PM
Tiny
DOCFIXIT
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Was cleaner placed in tank? Have you read contents of product? If product was sprayed into intake may have messed up MAF. If so clean MAF and throttle body out. If product had lead or lead substitute then O2 are contaminated.
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Monday, March 16th, 2009 AT 1:44 PM
Tiny
SKM1969
  • MEMBER
  • 6 POSTS
It was put in tank and boy am I pissed that I put it in there. I swear, as I was doing it my gut instinct was saying "DON'T DO THAT"
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Monday, March 16th, 2009 AT 1:46 PM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Most likely contaminated O2 sensors need to have placed on a scan tool and diagnosed.
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Monday, March 16th, 2009 AT 1:49 PM
Tiny
SKM1969
  • MEMBER
  • 6 POSTS
Thanks so much for everything! Maybe It won't be as bad as I am making it out to be in my head. I love the car, it's never had any problems and it has 240,000 miles on it.
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Monday, March 16th, 2009 AT 2:13 PM
Tiny
DOCFIXIT
  • MECHANIC
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If the stufs still in tank consider draining add fresh fuel. In no check engine light on then it may reset after some driving.
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Monday, March 16th, 2009 AT 2:24 PM
Tiny
SKM1969
  • MEMBER
  • 6 POSTS
Check engine light is on and the diagnostics only states catalyst effeciency below threshold. It's been that way for 3 years, smae code and everything and I had o2 sensors replaced last year. So anyway, I just got off the phone with one of my customers and he said that it could also be my coolant level. (?) Who knows at this point. Thanks again for everything!
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Monday, March 16th, 2009 AT 2:49 PM
Tiny
SKM1969
  • MEMBER
  • 6 POSTS
Just found out EXACTLY what is wrong with my car. This is valuable information for anyone that has this "looping problem" with their ACURA. Apparently Acura's are very sensitive when the anti-freeze level becomes the slightest bit low, it sends air through the vaccum lines and that's what makes the engine rev up and down. I put a little bit of anti-freeze in my car yesterday and well PROBLEM SOLVED! YEAH
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Tuesday, March 17th, 2009 AT 9:25 AM
Tiny
DOCFIXIT
  • MECHANIC
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Thanks for info that is good stuff to know guess the low coolant does not warm up throttle and it goes from cold idle to hot idle setting.
Glad all is good
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Tuesday, March 17th, 2009 AT 9:33 AM

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