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1996 Honda Civic 1996 Honda Civic automatic RPM falls when

Tiny
BLACKHONDA2009
  • MEMBER
  • 1996 HONDA CIVIC
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 11,700 MILES
Reggie here from philippines too, have same problem with my honda, rpm falls to 200-300 rpm when you release the accelerator, this is when the aircon is on. At times it is ok but when the rpm falls, you can feel that the engine is vibrating somewhat as if going to a stop, but then the rpm up and falls again. Normally the rpm needle stays on it's original 800-900 rpm during idle or whenever I release the accelerator. Please help. The mechanic adjustic something loosening the 2 screws and lifting the device a little up ( I don't know if it's the IACV ), for a few hours the rpm is ok but then problem re-occurs. What could the problem be?
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Tuesday, May 19th, 2009 AT 12:51 AM

3 Replies

Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
1st step should be to check IACV
remove and clean
Check AC system too
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Tuesday, May 19th, 2009 AT 5:44 AM
Tiny
BLACKHONDA2009
  • MEMBER
  • 8 POSTS
Yes and thanks !, The mechanic did that already, we thought it was okay but after a 15 minutes of driving I come to a stop on a traffic light and the problem is there again. Could it be that it was not properly cleaned? Do I need to buy a new IACV?, I'm gonna have my aircon system to be clean this week, I hope it's the expansion valve or the dryer. The good thing is that the rpm doesn't drops that much as before, a slight improvement.
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Tuesday, May 19th, 2009 AT 6:35 AM
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Make sure idle air control valve clean good
and air way
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Tuesday, May 19th, 2009 AT 9:15 PM

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