Rpms Won't Drop
Thread Starter
Melting Slicks
Joined: Dec 2003
Posts: 2,857
Likes: 2
From: pawleys island sc
Rpms Won't Drop
if I get the car up to 2000 to 2300 rpms and take my foot off the accelerator the engine rpm's drop down to 1500 and just hold there.
I have to brake just short of what you'd consider "pretty hard" to get the rpms to drop down to 1000 and then finally to 850.
99 A4 400+rwhp 342's and 3600 TC. See sig for other mods if needed.
Any ideas would be appreciated.
I have to brake just short of what you'd consider "pretty hard" to get the rpms to drop down to 1000 and then finally to 850.
99 A4 400+rwhp 342's and 3600 TC. See sig for other mods if needed.
Any ideas would be appreciated.
Last edited by 99 vett babycar; Jan 31, 2007 at 06:12 PM.
Instructor
Joined: Jan 2006
Posts: 103
Likes: 2
From: Boynton Beach Florida
2018 C6 of Year Finalist
I had a '97 Eldorodo that was doing the same thing. The problem was a bad "throttle position sensor". I would assume a C5 has a TPS. My car did't send a code or the service engine light did't come on so the dealer could not figure out what it was. One day the light came on , so I drove it right to the dealer and they fixed it.
Burning Brakes
Joined: Mar 2006
Posts: 1,195
Likes: 25
From: Tacoma WA
Curious how does it idle? If you have it in neutral and bring it up to 2-2.5k slowly, then lift (as if you're on the road) does the idle drop back down to 800ish, or does it hold at 1500?
I agree, custom tune or throttle position sensor would be good places to start.
Dan
I agree, custom tune or throttle position sensor would be good places to start.
Dan
Pro
Joined: Dec 2001
Posts: 555
Likes: 44
From: Gilbert AZ
if I get the car up to 2000 to 2300 rpms and take my foot off the accelerator the engine rpm's drop down to 1500 and just hold there.
I have to brake just short of what you'd consider "pretty hard" to get the rpms to drop down to 1000 and then finally to 850.
99 A4 400+rwhp 342's and 3600 TC. See sig for other mods if needed.
Any ideas would be appreciated.
I have to brake just short of what you'd consider "pretty hard" to get the rpms to drop down to 1000 and then finally to 850.
99 A4 400+rwhp 342's and 3600 TC. See sig for other mods if needed.
Any ideas would be appreciated.
