Ok well I just traded my hatch for a 95 gsr with an ls motor. The problem I am having is this: I noticed when I tried to hold my foot on the gas and keep a constant speed/rev, that I could hear my rev's slowly fluctuate. So when I got home I started the car, put it in neutral, and began to push the pedal. Still I could not keep a constant rev. I mean my foot stayed still giving a consistent throttle pressure, but the revs slowly went up and down!?

I would say its the IAC, but it keeps a constant rev while in neutral with my foot off the pedal, so I am stumped?

Can anyone help me?


Also here is a thread I just made about my brakes. The main question was, "Is a brake master cylinder replacement a bolt-on process or do I have to take it in somewhere?"

https://honda-tech.com/zerothread?id=1027412


Any help on either subjects would be greatly appreciated. thanks guys.

 

How much fluctuation?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BremertonDA &raquo;</TD></TR><TR><TD CLASS="quote">How much fluctuation?</TD></TR></TABLE>

Just a few hundred rpms, but it consistantly does it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Spooled-U &raquo;</TD></TR><TR><TD CLASS="quote">I would say its the IAC, but it keeps a constant rev while in neutral with my foot off the pedal...</TD></TR></TABLE>Yeah, the ICAV isn't even trying to hold a constant rpm when the throttle is open.

I almost think it's normal, but I'll have to try that myself. That's sorta why you need an AICV in the first place.

 

I have the same exact problem and ruled out the IAC because the idle is fine, so I have no idea what it could be. The fluctuation is too much for it to be normal IMO and you can feel the car surging while driving with constant light throttle.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GeeReg &raquo;</TD></TR><TR><TD CLASS="quote">I have the same exact problem and ruled out the IAC because the idle is fine, so I have no idea what it could be. The fluctuation is too much for it to be normal IMO and you can feel the car surging while driving with constant light throttle. </TD></TR></TABLE>Well, I know mine doesn't surge when actually driving, like 1st gear walking-speed in a parking lot. Without any load, I'm not sure...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GeeReg &raquo;</TD></TR><TR><TD CLASS="quote">I have the same exact problem and ruled out the IAC because the idle is fine, so I have no idea what it could be. The fluctuation is too much for it to be normal IMO and you can feel the car surging while driving with constant light throttle. </TD></TR></TABLE>

Yep mine does the same thing! Can anyone diagnose our problem?

Could it be a vacum leak?

 

I had that problem on my turbo teg, and then got hondata and tuned and it held it perfectly. My guess is if you have the gsr ecu and have a LS engine in there, your car is gonna have some tuning issues and is probably not able to compensate for all the different variations between a gsr and ls engine.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 95GSRTT &raquo;</TD></TR><TR><TD CLASS="quote">I had that problem on my turbo teg, and then got hondata and tuned and it held it perfectly. My guess is if you have the gsr ecu and have a LS engine in there, your car is gonna have some tuning issues and is probably not able to compensate for all the different variations between a gsr and ls engine.</TD></TR></TABLE>

My car is tuned with Uberdata on a P28 and did it even when I was using the stock ecu.

 

i had the same problem, after replacing all the sensors and valves we figured it still wasnt that.
if you call acura the first thing they tell you is to bleed your cooling system agian, because one of your lines could have air in it. the only reason the tell you to do this is because a sensor or soem sort of the that sits underneath the IM and the coolant runs threw it. if you have air in your line it will make your cars rpms move. i replaced that and it fixed my problem after trying everything else. if thats doesnt work thier is a small pin hole on the intake manifold. you will have to cover that up or weld its shut, make a plate, etc to cover it up. if nothing of that works it has to be ur icav, or iac. check your throttle cable and your TPS senors. that could also be it