hey i have a vp with a twin thorttle body manifold i just recently put on with a tuned memcal and it idles nice and lumpy but then when i go to take off it goes straight up to 2000 rpms and then when im driving and between gears when i push the clutch in it goes to 2000 rpms as well but when i come to a complete stop the rpms drop back down to about 850-950 rpms can any one tell me why this is
Re-adjust the throttle cable and check for vacuum leaks.
hey mate yeah we checked for vacume leaks last night there isnt any hat we could find and we put a little bit of slack into the throttle cable just to see and it still did it we evan striped the throttles down and cleaned them and its still doin it
Hows the TPS working?
How is your TB setup? Do you have one with the TPS mechanically linked with the second?
If you can, pull the intake track off the TB's and start it, then put it in gear and see if one TB is open further then the other. Or could it be a that both TB's are open just slightly too much? thus moving enough air to be the equivalent of one TB being partially open (as if you have your foot on the throttle).
Easy way to check that, is to totally disconnect the cable and see what happens.
make sure one IAC valve hole is blocked solid and block all other pipes.fit the tps on the TB that will open first if you have any slack between the TB's it can stop the tps registering as fast and closeing properly.then just turn the throttle stop screws on each TB so they close more to allow for the extra air
I tune the oldschool way fear on the passengers face and knuckle colour cant go wrong
tabbacco is still my favorite vegetable
alll fixed thanks guys