Hey guys....tonight I noticed on the freeway going 60 the rpms was at 3000. I don't remember it ever getting that high before. And when I put it in neutral it was ideling at 1000 but dropped to just under the 1000 mark after about 20 seconds.

Is this normal?

The car overheated on the freeway a couple weeks ago. And the only thing changed was a fan switch. Can this be the cause for the high rpms and idle?

thanks
j

 

Ok...I just got home after my last post. The idle and the RPMs are back to normal. RPM was around 2000 @ 60mph. Idle around 700 by the time I got home.

Any idea what cased it to act weird last night? [&:]

 

did you have air-con on when you noticed the higher revs?

 

Yes the a/c was on, but I turned it off when I noticed it up that high. But it didn't make a difference. Other than when it was idling, and I turned the ac OFF, it actuall reved up alittle then came back down.

I didn't see anything else that would lead me to believe the ac had something to do with it.

 

it should rev up slightly when you turn the ac off - ac pump needs a fair bit of the engines power to run it, and when you switch it off, the ecu takes a moment to realise it's off! drive your car with and then without the ac on - see if it makes any difference

it sounds like your temp sensor could have been damaged when the car overheated - if it's giving a cooler reading to the ecu, it'd cause the car to rev up

it could also be a sticky throttle or cable - try putting grease around the lever on the throttle body. also, move it by hand to check for ease of movement

what year/type is your car?

 

Yeah, what Year/Type is your car?

When I hit 60 mph, my rpm is around 3000

When I hit 70 mph, my rpm is around 3500

Is there something wrong with my car?

I have a 1996 Civic EX Coupe w/manual and no mods.

 

It is a 95 D15B7 5 spd. over 140k on it. I had some trouble with a sticky throttle cable earlier in the year.

 

did you have it replaced?

 

Oh wait I take that back, it was a sticky throttle plate (?) not the cable. The mechanic said he cleaned it out and also replaced one of the sensors.

 

was the car giving the same symptoms before he cleaned it?