i have a 94 gsr. when i start it up it idles around 3200 rpm then slowly drops between 1100-1500 rpms. the rpms then bounce between 1100-1500 rpm. yes i have recently turbo'd my car but it was doing this before i put the turbo on. any suggestions? iacv, tps, thermostat?

 

adjust your throttle cable? idle after warming up should be in the 750 rpm range for NA engine..dont know if it would idle that high for a turbo engine.

 

it was doing this when it was na. i will see it drop to like 7-800 once in a while but usually it stays above 1000. i don't think i need to adjust the cable because it was fine before and i didn't touch anything.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Gfunk176 &raquo;</TD></TR><TR><TD CLASS="quote">it was doing this when it was na. i will see it drop to like 7-800 once in a while but usually it stays above 1000. i don't think i need to adjust the cable because it was fine before and i didn't touch anything.</TD></TR></TABLE>
idling above 1000 rpms after warming up the engine doesnt mean the throttle cable didnt need an adjustment before the turbo kit..it is suppose to idle at 750 +/- 50 rpms and drop occasionally when the radiator fan, AC fan, etc was turned on..that would be considered "normal" by the service manual's spec.

i would assume you are getting the same high idle after the turbo kit as you did before the turbo kit.

good luck with it.

 

i would check for a vaccuum leak, mine did the same thing. i fixed the vaccuum leak and found a throttle position sensor at the junkyard, and it fixed mine! GOod luck!

 

if not any of the above its possible map sensor - low voltage will wont allow for a code

 

do this , take off your radiator cap, when you do this the rpm should drop and not jump, check the coolant levels, if it's not topped up, then top it up and let it idle for 10 minutes with the cap off, might be just air in the radiator, if theres air in the radiator you'll usually see bubbles, happened to me.

 

FITV?

 

mine is doing the same thing,
do i take off the radiator cap while it's idleing?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NeoBlkGSR &raquo;</TD></TR><TR><TD CLASS="quote">mine is doing the same thing,
do i take off the radiator cap while it's idleing?</TD></TR></TABLE>
YOUR A FUC*IN IDIOT
i would love to see you do that lol
map sensor or vacuum leak as stated in previous posts, if there were air in the cooling system, it would go into the over flow tank when the car is up to running temp, and the air would go out the over flow tank...

 

$1,000,000.00 says it's the fast idle valve. This is a purely mechanical valve that has coolant running to and from it. It opens when the coolant is cold for a high cold idle operation. This helps to warm the car up. Here's how you verify: remove the tube to the TB, so that you can look in. There will be 2 small ports machined on the inside of the TB, one goes to the IACV, the other goes to the FIV. Plug either one up with your thumb (won't hurt, promise... well, it might be a little warm, so be careful) while the engine is at operating temp and idling (don't plug both ports at the same time) and see if your idle normalizes. See which port normalized the idle and trace it to the device (the IACV has an electrical connector, while the the FIV does not). More often than not, the FIV is faulty.

Hope that helps.

 

dude please show pics of those valves please!

 

can you fix the iacv or fitv if they are faulty.... or are these parts that need to be replaced with new ones?

 

Where was your vaccum leak located at? I have a vaccum leak and i cannot seem to find out where it is? I have no clue... any suggestions?

 

bump