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1992 Honda Civic RPM Fluctuate in my Civic EG8

Tiny
GOLUBELLA
  • MEMBER
  • 1992 HONDA CIVIC
  • 4 CYL
  • FWD
  • MANUAL
  • 130,000 MILES
I have been using an EG8 for about 1 and  ½ years. 1992 model, Vtec. After about three months since I bought it, I came across it has been converted from auto transmission to manual. After about 1 year of usage I came up with a problem such that engine stops suddenly. Especially when AC is on. Changed EAC valve. But problem existed. Checked with Honda Agent garage. They increased the idling speed of the engine to 1500 RPM. Now the problem is the engine speed oscillates from 400 to 2000 RPM. AC engages a heavy load on engine. Sometimes I cant even overtake a vehicle with AC. Honda garage guys said they can't use the tester since many unidentified wires are coming out of the engine due to auto manual conversion. Can anyone help me on this?
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Tuesday, May 26th, 2009 AT 11:13 PM

1 Reply

Tiny
F4I_GUY
  • MECHANIC
  • 3,302 POSTS
The engine surging problem is your FITV (fast idle thermo valve). Also a 1500rpm idle is not right. I wouldn't take my vehicle back to those mechanics, they should of properly set your idle to 800rpm and changed the FITV.

For your power issue, try doing a compression test and a tune-up. A compression test will tell you if you have a weak motor or not.
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Wednesday, May 27th, 2009 AT 8:28 PM

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