baze122

Hello everybody,
I have a 2000 Prelude sh. Ever since i have bought the car it has given me problems. I have been having idling issues for about a year. Last April when i would start my car when it was cold it would start up fine. As soon as my car wold get to running temp and my fans to cool off the engine would turn on my engine would drop 500 rpms and basically stall out. It would also do this if i turned on my a/c and it would drop 500 rpms even on a cold engine. I didn't have the money to fix it so all i did was adjust my throttle cable on my throttle body to have it idle around 1600 rpms. It would still drop 500 rpms if my fans turned on or if i turned on my A/C. I drove it all the way to September until one day it just wouldn't start. I took it off for the winter time and saved up money. I recently started working on it. I replaced my spark plugs, wires, cap and rotor. I also replaced the spark amplifier (I think that is what it is called) It is the electronic unit inside the distributor. I also check my timing belt, made sure it didst jump time. I changed the oil drained the gas out and put in fresh gas with fuel injector cleaner. I cleaned the air idle control valve. All of that did it to make it start. Once in a while she will not start and when I pulled the plugs out to check them they were soaked in gas. I am still having the idling issues though. When it will be running and it stalls out, I will pull the plugs out and they plugs will be soaked in gas. It is as if it getting to much fuel. I ran a compression test but it was on a cold engine and i forgot to keep the throttle open all the way but my psi was from 40 -60 psi on all the cylinders. I am going to be doing another compression test. If anyone has any ideas on why my car mught be droping 500 rpms and stalling out when the engine warms up pleasse let me know because im getting despriate and ill try any of your ideas. Im pretty sure i gave you enough information of what is happening but if I didn't let me know and ill write what ever you need to help me fix this
Thank you.

baze122

please guys i need the help

sentient

pop your rad cap and try bleeding the thermostat.. there is a valve/bolt in the middle of the thermostat (12mm socket on my 97 h22a4) bleed until a steeady stream comes out and close it . Then with your rad cap off , start you car letting it run until it gets up to temperature and let it run for a while more... you might have air in your system screwing with your stat sensor.

Also try unclipping any wire harnesses near the engine and cleaning the male and female ends with some component cleaner..

But Im a noob so I could be leading you in the wrong direction... wouldn't hurt to try though.

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Im a noob, but I'll try not to sound retarded.

skyyskyy

might want to get the alternator checked since it seems to stall under load.

my97lude

^ I agree with checking your alternator before continuing with part replacement. If you go to Autozone or other like store they will test it for free... won't cost you. Had a similar problem with another car where the regulator inside was bad. It is happening under high electric loads, as you said... probably feels like it will stall when you first turn on the lights or while running A/C, or other high loads.
If nothing else, you will be able to rule it out wiithout another hole in the pocket.

Update us on what you found as I know this is an old post...

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-1992 Honda Accord DX... sold
-1993 Honda Accord EX 5spd...Sold
-1991 Honda Prelude SI... Sold
-1989 Honda Prelude AWS... Sold
-2002 Honda Civic EX... Sold

-Now-1997 Honda Prelude 5spd Base model with SH engine and Tranny... In the process of restoration.


-oh yeah... I'm also a chevy guy.

Sesso

Old ass thread but to me it sounds like the computer isn't kicking up the idle when turning the A/C on. Same with the PS pressure switch. It sensing the pressure raising while turning and kicks the idle up a few hundred.

my97lude

Yeah. Searching for solutions to various problems and keep coming across these old threads that either never got fixed (unlikely), or the OP never wrote back to tell what they found for the fix.
Just wanted to add what I found to fix that problem, since I had the same thing happen in the past caused by the alternator.

Maybe the OP can respond and then close this thread.

__________________
-1992 Honda Accord DX... sold
-1993 Honda Accord EX 5spd...Sold
-1991 Honda Prelude SI... Sold
-1989 Honda Prelude AWS... Sold
-2002 Honda Civic EX... Sold

-Now-1997 Honda Prelude 5spd Base model with SH engine and Tranny... In the process of restoration.


-oh yeah... I'm also a chevy guy.

Too_Funny

Most idle problems on these cars is from the iac valve. Get that checked. Also, messing with the idle on these cars I believe requires a scantool. I don't quite remember I haven't worked on imports for awhile but most newer OBDII imports require a scantool to adjust the idle. adjusting the throttle cable is a no no.

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Sesso

They have an idle screw at the TB.

Too_Funny

I know but without a scantool the ecu won't accept the idle change and the iac will kick in. Again I don't remember if Hondas are like that but Nissan and other imports I have worked on all requires a scantool to change the idle.

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dontbuyprelude

i believe you can jump the 2p under dash connector and the idle wont be reverted to its original state
the helms manual clearly outlines the whole procedure. you dont need a scantool.

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David
01 SSM SH

93 d15 auto del slo gone and FORGOTTENexcept for a few memories....