[nanner]

I just finished putting a rebuilt turbo into my 83,
now when I start up my car, it idles real low and stutters and dies.
if I hold down the gas to run it at 1500 rpm it runs fine, but when
I let go it idles real low and stutters and dies. please help!

Kevin,

 

[mylesm]

sounds like you have an air leak which is causing air to leak into the system after the AFM

this will cause your AFM to show less air than is really going through the system

which will result in a lean condition

check the boot that goes from the AFM to the turbo and from the turbo to the TB..

if your stumped, use carb cleaner to find the leaks

let us know how it goes....

 

[nanner]

Thw car was working fine before the swap

Kevin,

 

[spork]

sounds like an air leak to me too...but did you double check all your spark plug wires, fuel injector wires etc to make sure they didn't get bumped during assembly/disassembly? Did you remove the intake manifold to install the turbo or did you cuss and pull it out without remving the intake?

 

[nanner]

I left the intake manifold on, it really was'nt that hard to take out and put back in
all I did was remove the waste gate actuator and dropped the turbo in.
But after I double checked all the vacume hoses and tightened them
it runs alot better, but still not 100%, and it still idles at about 500 rpm,
I'll double/triple check everything.

Kevin,

 

[Brad-Man]

The guys are right here, the boot from the AFM to the turbo is either not attached fully, or has a split in it.

My '83 had the same problem, and I found the split on the underside of the accordian-pleated section near the turbo.

I have a larger compressor section and the peoplle who cur the boot to fit cut the sprin inside too short so that it stopped before the accordian section and wasn't supporting it. When the boot got old enough, and gave it enough "boot" one day, the thing up and split on me!

I managed to find another boot, and took the spring out and cut it to stop just shy of the turbo so the whole length is stiffened by the spring instead of allowing the vacuum to simply collapse the weakest (accordian pleated) area in the future.

Check that boot - they get old and brittle!


Brad