teezlr

I removed my emissions equipment and I replaced the coolant line that goes to the TB and extended it. The line folds in half and does not allow coolant to pass through it to go into the TB. Would this be the reason for a high bouncing idle? I was reading about the thermowax and do not exactly understand it but do understand the lack of coolant could be the culprit. Any insight?

RETed

Yes.
No coolant flowing prevents the cold start cam from disengaging.
The stock ECU "sees" the hot engine via the water thermosensor, but the throttle plates are propped open from the cold start cam.


-Ted

SureShot

Yes & No.
If the TPS is set so that the ECU sees closed throttle even when the throttle (or a vac leak) is running you to 1500RPM, the ECU will fuel cut till the revs fall back below 1500.
That can give the zoom zoom zoom idle.

2713ddddavid

iTrader: (1)

I removed emissions including vac rack etc. I also did the throttle body mod to simplify things even more. I retained the BAC and searched through my local parts house to find two pieces of preformed coolant hose that could be cut and so it would connect under the UIM then to the BAC. I used the same hose (bought two)to go from BAC outlet to the stub on the back of the water pump housing. I chose to keep the BAC with its coolant supply iflowing
Here are links to both sites that gave me the info to do this right.

http://www.fc3spro.com/TECH/HOWTO/TBM/tbm.html

http://www.rotaryresurrection.com/2n...s_removal.html