YELLO C5

Had to replace my throttle body. The tuner that installed the cam drilled the throttle plate on the old one. I'd like to avoid drilling a hole in the new one. Car won't idle now after warming up. It's a Thunder Racing 224/224 114 LSA. Will the idle relearn process of pulling fuses be enough to get the car to idle warmed up?

I know I need to have the car retuned but I have some headers to install that I might not get to for a few weeks.

lucky131969

I've never heard of an idle relearn that involved pulling fuses. The procedure for a manual is as follows:


Manual Transmission

Turn OFF the ignition.
Restore the PCM battery feed.
Turn OFF the A/C controls.
Set the parking brake and block the drive wheels.
Place the transmission in Neutral.
Start the engine.
Ensure that the engine coolant temperature is more than 80°C (176°F).
Allow the engine to idle for 5 minutes.
Turn OFF the engine for 30 seconds.

If your engine was tuned with the hole drilled in the throttle plate, it may never be stable, until you get a new tune.

Good luck.

YELLO C5

I had my car tuned after the cam back in 2002 and they drilled the throttle body. Had to replace the PCM so I lost the tune. Car was running OK until I had to replace the throttle body.

I'll give that a try. This is what I read before about the idle relearn:

http://forums.corvetteforum.com/c5-t...dle-speed.html

baxsom

i thought that procedure you just posted involved pulling two fuses under the hood. It has been posted here a few times. I forget the numbers.

printmanjackson

drilling a hole in the throttle body of a DBW car makes no since.

I would find me a new tuner

sfc rick

It's old school....still works though.

I drilled mine after cam install and all the additional mods. The car needed a tune which I couldn't afford at the time. I driiled to get it to idle and not surge. It was perfect from then on. WHEN I had the tune done I asked him if he wanted me to solder up the hole and he said...What for? The car runs perfect and pulls like a monster.

lucky131969

What I posted is a copy/paste from the 2000 service manual.

87SAM

I have seen the fuse pulling procedure floating around also. Seems like the same thing as disconnecting the battery. You could also try patting your head and rubbing your belly . The last sentence is the most important, just drive the car, it does the same thing.

Turn the key on but don't start the engine. Remove the number 16 & 23 PCM fuses from the under hood fuse box. Turn the key off. Replace the number 16 & 23 fuses. Start the car and let it run @ 175 degrees or warmer for 5 minutes. Shut down the engine for at least 30 seconds, then drive the car for about 30 miles at varying speeds.

Qwik01

I had the same problem. The car could not learn the new throttle body. It would start and idle ok when it was cold. But shut it off warm and try to start it back up it was gasping for air and wouldnt stay running. A tune did the trick.

YELLO C5

I'm guessing I'll have the same result of not being able to get it to idle without a tune but I figure it doesn't cost anything to give the relearn procedure a try.

Aviator54

I just did the idle relearn on my 2000 C5 and pulled the 16 and 23 fuses and it works fine. Beats having to retune the radio and relearn the memory for the seats when you disconnect the neg bat terminal. I also had a tb with the hole drilled in the plate and my car would not idle. It idled around 1500-1800 but when I put the stock tb back on, it idles perfect.

lucky131969

Hmmmmm.....http://forums.corvetteforum.com/c5-t...high-idle.html

YELLO C5

I got around to the fuse pull method and it seems to be idling well enough to drive for a while until I get it retuned. Seems like it was close to stalling a few times on the 25 mile drive and I haven't tried it with AC but good enough to get around.

93civEJ1

thats what mine does. Hoping to get a tune here soon so I can drive the dang thing.