low first idle (1 Viewer)

[chuckd83]

1993 FZJ80

I was chasing a misfire that ended up being a bad #6 injector, but in the process I did all sorts of work:
-removed PAIR system
-relocated O2 sensors to old PAIR location on manifold
-cleaned throttle body
-replaced spark plugs
-replaced distributor that had oil in it

I'm thinking I didn't put something back correctly when I replaced the injector, but now I have a low first idle - 800 rpm when it used to be ~1500 rpm. Also, it has an occasional hesitation when starting from stop.

I know I had to remove the throttle cables to get to the intake manifold. When I put them back, I adjusted them per the FSM. Does one of those affect first idle? I thought it was controlled by the IAC valve. Thanks for any help.

 

[zapatius]

Double check that your throttle cable has the correct tightness, even though you adjusted it. My throttle was off when I did all that you did and also installed a new throttle cable. I had it too loose. Idle was all over the place. Right as rain after getting correct tightness. Also, I assume you checked your timing when you did the distributor?

 

[chuckd83]

Double check that your throttle cable has the correct tightness, even though you adjusted it. My throttle was off when I did all that you did and also installed a new throttle cable. I had it too loose. Idle was all over the place. Right as rain after getting correct tightness. Also, I assume you checked your timing when you did the distributor?

I’ll check the cable, but it idles fine. Just a little lower than it used to on cold startup. The timing was off after I put everything back together. Very low power. I took it to a Land Cruiser mechanic and he fixed that.