VERY high engine RPM on start up
 

I have just finished a six month R&R project on my '76 930. When starting up for the first time, the engine goes to about 4K RPM. I switched off the engine right away. I have checked the throttle linkage and adjusted it, it seems to be in the right range. I am wondering what I should be looking for / at next.

Thanks in adavnce!!

It's probably your auxiliary air regulator. The early Turbos had a faster high idle than non-Turbos. You could either adjust the existing one, or swap it out for an SC unit.

It could also be a vacuum leak.

Is the butterfly tight in the throttle body? Is the hand throttle on or misadjusted?

4K seems high for sensor type problems.

BTW, how do you adjust the hand throttle?

why are you having to sell it?

Andy

It is the throttle linkage! I detached at the link on the trany and the car started, and idled normally. So when I play with the linkage between the trany and the accel pedel, I get full motion (and visa versa from the engine). But when I join the pedel linkage and the engine linkage at the trany, there seems to be 1 to 1 1/2 inches of travel I must take out of the pedel linkage for them to connect. I also seem to have run out the adjustment too. Do you think the issue is at the hand throttle?

The CFO says to get rid of it. I dearly love the car, but I only drive it 6-10 times per year. On the day when it pulls out of the driveway (or goes into a car hauler) I will probably shed tears.

It must suck to be p-whipped. ;)

Heheheee.

CFO?

Andy

Ya'll should know...

nope......is it a usa thing?

CFO "Chief Financial Officer" Also know as "Wifey"

I got to question the masculinity of a man who would choose a boxter over a 930 and then claim his wife made him do it. :p

Incorrectly setting the timing (heck, it's always a guess at rebuild time) can cause the engine to race as well (too much advance). Timing the distributor right away is not necessarily a bad idea...

-Wayne