Hanging RPMs
#1
Burning Brakes
Thread Starter
Join Date: Nov 2003
Location: Mahopac, NY
Posts: 966
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Yesterday I noticed that my rpms aren't really dropping during shifting when I press the clutch. It's not until I release the clutch in gear that the revs drop. Furthermore in 1st to 2nd and 2nd to 3rd I think I kind of notice the RPM's jump up a bit when the clutch is disengaged.
I'm 99% sure that it didn't do this before (there's alway that 1% where you say to yourself "did I just not notice this before?").
If I'm at a stand still and I blip the throttle, it seems to hang a bit in the 2,500 rpm range before it drops.
Thanks for any help.
I'm 99% sure that it didn't do this before (there's alway that 1% where you say to yourself "did I just not notice this before?").
If I'm at a stand still and I blip the throttle, it seems to hang a bit in the 2,500 rpm range before it drops.
Thanks for any help.
Last edited by arbeitm; 07-16-2008 at 10:27 PM.
#2
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
When you say this, do you mean you see/hear the actual engine behavior, or is it just the tach needle you see doing this?
If the engine is indeed behaving thusly, you've got something screwy. The easiest to check is a stuck throttle linkage or throttle.
If the engine is indeed behaving thusly, you've got something screwy. The easiest to check is a stuck throttle linkage or throttle.
#5
Burning Brakes
Thread Starter
Join Date: Nov 2003
Location: Mahopac, NY
Posts: 966
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Actually, I do have one one Saturday!
#6
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
You've got an unsafe car to take to the track. Something is sticking. Look at all of the obvious stuff from your gas pedal back. Hopefully you'll find something obvious like a weak throttle return spring, sticky linkage, etc.
I've seen bad advice posted on this subject before, but do not accept anyone stating it is "ok" to track like this. It isn't. If you do, you not only endanger yourself, but more importantly, others and their cars.
I've seen bad advice posted on this subject before, but do not accept anyone stating it is "ok" to track like this. It isn't. If you do, you not only endanger yourself, but more importantly, others and their cars.
#7
Addict
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Matt, please forgive us. If we didn't do this here we'd have a masive drinking problem. that was a bad inside joke and I hope you will forgive me. It's time to check every single little thing that it could be. No joke. I have a 3.2 so I'm not much help, but I'd be under, over, around, and next to anything that moves related to fuel delivery from pedal on....
Trending Topics
#9
Burning Brakes
Thread Starter
Join Date: Nov 2003
Location: Mahopac, NY
Posts: 966
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
No problem. I didn't really get it until Ed explained it. Then I figured it was an inside joke.
I don't think I'm doing a good job explaining it. It doesn't seem to be a throttle issue. I'll check out the cables, etc. But I'm leaning more towards a cis issue (like the decel valve). It seems like it is related to my idle issue and cold start issue.
I don't think I'm doing a good job explaining it. It doesn't seem to be a throttle issue. I'll check out the cables, etc. But I'm leaning more towards a cis issue (like the decel valve). It seems like it is related to my idle issue and cold start issue.
#10
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I think i would have the car parked and see if it will stick at higher rpm. With the engine running see if the throttle rocker arm on the driver side of the air box(has the throttle wire attached that runs to the front of the car) is home on the stop. If when you push it to to the stop and there is no drop in rpm, then is the stop nut on that screw tight or did it loosen up and the screw has adjusted itself in.
From there I wuld go to the front and see if the gas pedel is not returning home completely and the wire is clear. From there it is under the car and see if there is anything obvious.
From there I wuld go to the front and see if the gas pedel is not returning home completely and the wire is clear. From there it is under the car and see if there is anything obvious.