Car ran like a champ...now this PCM code WTH please help.
Thread Starter
Former Vendor
Joined: Aug 2001
Posts: 5,798
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From: Dallas & Chicago TX & IL
Car ran like a champ...now this PCM code WTH please help.
My car ran a best pass to date of 10.38 @ 134!!! with a 1.55 60' ft. Now I am getting a PCM code: P1514 H C and it goes into a reduced power mode after I hit the gas a little hard . According to my check sheet, this is a "TAC System MAF Performance-A". What is it? and what is causing it? some of my friends here think that it is the Throttle body!!! I replaced the the stock TB with a ported one a little over a week ago and raced the car without any issues...now this!!! Any input??? Oh yeah, I run a dry NOS shot (120hp)
Thanks for your help. :cry :cry
[Modified by Myhardtop, 10:09 PM 12/16/2003]
Thanks for your help. :cry :cry
[Modified by Myhardtop, 10:09 PM 12/16/2003]
Veteran
Joined: Jan 2000
Posts: 2,082
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From: Louisville KY
Re: Car ran like a champ...now this PCM code WTH please help. (Myhardtop)
you're right it's the throttle body.
According to the GM manual you should check for:
inspect throttle blade for being broken, bent or missing.
inspect the TP sensor. If it is mis-aligned it wiil set this DTC.
check the drive mechanism.
The manual says if you find any of the above you should replace the TB.
That's about it. good luck.
Oh, and one more thing, Great Run !
According to the GM manual you should check for:
inspect throttle blade for being broken, bent or missing.
inspect the TP sensor. If it is mis-aligned it wiil set this DTC.
check the drive mechanism.
The manual says if you find any of the above you should replace the TB.
That's about it. good luck.
Oh, and one more thing, Great Run !
Le Mans Master
Joined: Jul 2002
Posts: 6,147
Likes: 32
From: Dallas TX
Re: Car ran like a champ...now this PCM code WTH please help. (Godspeed)
1) check the air bridge; out of the 20 times or so, i have heard of a similar problem, about 15 times, the air bridge or coupler have come off
2) get someone to get in car and turn the key and dont start the car; tell him/her to get on the gas and see if the TB blade opens or not
2) get someone to get in car and turn the key and dont start the car; tell him/her to get on the gas and see if the TB blade opens or not
Thread Starter
Former Vendor
Joined: Aug 2001
Posts: 5,798
Likes: 50
From: Dallas & Chicago TX & IL
Re: Car ran like a champ...now this PCM code WTH please help. (LittleBoyBlu99)
Thanks Littleboyblu99, we think we figure it out. We checked the whole air track, from air box to the TB and it was leaking a little air... those stupid clamps chevy gives us are junk; it does not really hold that well. Test drove it and no codes or issues as of yet and hopefully not again. Maybe I should buy a smooth air bridge with real clamps. Well, let's hope that was the problem; I'll keep you guys posted in the event some one else experiences the same deal. :cool:
