dragondwc777

My 88 turbo idles at 1500 The bac is closed but it still idles high where should I adjust next?

hugues

A few ideas:

- throttle cable too tight

- dashpot misadjusted

- primary throttle plates clearance out of spec (unlikely)

- lock nut (8mm) on top of intake opens throttle plates too much

BTW, idle speed should be adjusted with initial set coupler jumped

Hugues -

j9fd3s

iTrader: (3)

this should be number 3, the thermowax is stuck/bad/has air in it.

mike

hugues

good call j9fd3s, I forgot about that one.

the thermowax keeps the throttle plates open to let the engine warm up (fast idle) for a few minutes. If its cam does not disengage, the idle will stay high.

hugues -

dragondwc777

I just rebuilt the engine it seems to be running fine all but idle speed I know that the fast idle cam is out of adjustment when i adjust the cam to the 2 marks on the roller it doesnt want to take gas and runs terrible how can I solve this problem when I open the bac at all it idles erratically it is closed now. It also will not start after it is warm like I posted earlier.

j9fd3s

iTrader: (3)

i would say its either a vacuum leak or a misrouted vacuum line. on my t2 i had the routing of the acv hoses wrong, once i fixed it, it wanted to start hot

mkie

dragondwc777

Primary throttle plates were out of spec fixed now runs fine. Thanx for info!

yzf-r1

iTrader: (1)

idle speed should be adjusted with initial set coupler jumped

how do you do this?

dragondwc777

The 2 wire green plug behind the battery next to the coil pack You should jump the 2 wires together then adjust the BAC The haynes manual explains this in detail