C5 + Cam,how to stop idle surge
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From: Bridgewater,Ma
C5 + Cam,how to stop idle surge I've tuned many F-body's but this is the first Vette.
The problem at hand.Installed a TR224 on 112.Did the ussual tuning ie idle,timing ect.
The problem I'm having is hot start and when you rev it the idle drops to 200-400rpm then goes back up.It did die on me once.
This could be fixed on a F-body by drilling the TB but I know not to drill the TB on the Vette.
Would the fix be the Idle air table??
Other than this problem the car runs great.
The problem at hand.Installed a TR224 on 112.Did the ussual tuning ie idle,timing ect.
The problem I'm having is hot start and when you rev it the idle drops to 200-400rpm then goes back up.It did die on me once.
This could be fixed on a F-body by drilling the TB but I know not to drill the TB on the Vette.
Would the fix be the Idle air table??
Other than this problem the car runs great.
Re: C5 + Cam,how to stop idle surge did you try an idle relearn w/ it? that is how you handle alot of idle problems w/ C5's
here are the directions
Just remember to do a idle relearn. Turn the key on but don't star the engine. Remove the number 16 & 23 fuses from the underhood 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. If you do this kind of low bugget mods you will feel a big difference in the seat of your pants, and ET's. Good luck have fun.
here are the directions
Just remember to do a idle relearn. Turn the key on but don't star the engine. Remove the number 16 & 23 fuses from the underhood 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. If you do this kind of low bugget mods you will feel a big difference in the seat of your pants, and ET's. Good luck have fun.
Thread Starter
LS1Tech Sponsor
iTrader: (12)
Joined: Nov 2001
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From: Bridgewater,Ma
Re: C5 + Cam,how to stop idle surge I'm under the impression it is not an idle relearn problem.
The car idles perfect.Just for 4 seconds on hot start and when the revs come down it surges a couple times then catches itself and idles perfect again.
Looks like the revs just need to come down slower,I've already played with the followers with no results.
The car idles perfect.Just for 4 seconds on hot start and when the revs come down it surges a couple times then catches itself and idles perfect again.
Looks like the revs just need to come down slower,I've already played with the followers with no results.
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Joined: Jul 2002
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Re: C5 + Cam,how to stop idle surge
did you try an idle relearn w/ it? that is how you handle alot of idle problems w/ C5's
here are the directions
Just remember to do a idle relearn. Turn the key on but don't star the engine. Remove the number 16 & 23 fuses from the underhood 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. If you do this kind of low bugget mods you will feel a big difference in the seat of your pants, and ET's. Good luck have fun.
here are the directions
Just remember to do a idle relearn. Turn the key on but don't star the engine. Remove the number 16 & 23 fuses from the underhood 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. If you do this kind of low bugget mods you will feel a big difference in the seat of your pants, and ET's. Good luck have fun.
Automatic Transmission:
1 Turn off the ignition
2 Restore the PCM battery feed
3 Turn Off the AC controls
4 Set the parking brake and block the drive wheels
5 Start the engine
6 Allow the engine coolant temperature to reach 176 degrees F
7 Shift the transmission selector into the drive range
8 Allow the engine to idle for 5 minutes
9 Turn on the AC controls (Omit for 2000-01 model)
10 Allow the engine to idle for 5 minutes (Omit for 2000-01 model)
11 Shift the transmission selector into Park
12 Allow the engine to idle for 5 minutes (Omit for 2000-01 model)
13 Turn off the AC controls (Omit for 2000-01 model)
14 Allow the engine to idle for 5 minutes
15 Turn off the engine for 15 seconds
Manual Transmission:
1 Turn Off the ignition
2 Restore the PCM battery feed
3 Turn Off the AC controls
4 Set the parking brake and block the drive wheels
5 Transmission in neutral
6 Start the engine
7 Allow the engine coolant temperature to reach 176 degrees F
8 Turn on the AC controls (Omit for 2000-01 model)
9 Allow the engine to idle for 5 minutes (Omit for 2000-01 model)
10 Turn off the AC controls (Omit for 2000-01 model)
11 Allow the engine to idle for 5 minutes
12 Turn off the engine for 15 seconds
Good Luck.
joel
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Re: C5 + Cam,how to stop idle surge
I'm under the impression it is not an idle relearn problem.
The car idles perfect.Just for 4 seconds on hot start and when the revs come down it surges a couple times then catches itself and idles perfect again.
Looks like the revs just need to come down slower,I've already played with the followers with no results.
The car idles perfect.Just for 4 seconds on hot start and when the revs come down it surges a couple times then catches itself and idles perfect again.
Looks like the revs just need to come down slower,I've already played with the followers with no results.
joel
Re: C5 + Cam,how to stop idle surge How come you do not drill a hole in the throttle body of a corvette, alot of people on the corvette forum drill one.
Please enlighten me, I am just trying to learn.
thanks,
Please enlighten me, I am just trying to learn.
thanks,
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From: St Louis, MO
Re: C5 + Cam,how to stop idle surge I have never drilled a hole with my T1 cam (221,.558,112) and I only have a slight surge in open loop with the air conditioning on. Adding timing at idle really helped my car.
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Re: C5 + Cam,how to stop idle surge
How come you do not drill a hole in the throttle body of a corvette, alot of people on the corvette forum drill one.
Please enlighten me, I am just trying to learn.
thanks,
Please enlighten me, I am just trying to learn.
thanks,
Hope this helps some .Maybe one of the Gurus can Chime in??
joel
TECH Resident
Joined: Nov 2001
Posts: 862
Likes: 0
From: Twin Cities
Re: C5 + Cam,how to stop idle surge
How come you do not drill a hole in the throttle body of a corvette, alot of people on the corvette forum drill one.
Please enlighten me, I am just trying to learn.
thanks,
Please enlighten me, I am just trying to learn.
thanks,
Hope this helps some .Maybe one of the Gurus can Chime in??
joel
