Crazy88
Probationary Member
- 11
- 0
- Jun 18, 2009
-
Tucson,
Arizona
*EDIT: I figured it out, I guess. I started it again and let it run a little longer. After about 30 seconds the idle came down to normal and stayed there. Maybe it was the computer relearning the Cam/Crank?
I just finished the timing belt on a 420A. The marks all looked dead on after turning the crank two turns by hand. I put the rest of the parts back together and started it up. The motor immediately shot up to 3000 RPM and after a few seconds, started climbing past 4000 RPM when I shut it off.
The car had no idle issues at all before I changed the timing belt.
What's the deal?
Incidently, when I was removing the motor mount bracket from the engine, I lowered the motor while one of the bolts was sticking out. The bolt came down on a metal vacuum line and crushed it. It's the line that runs from the throttle body to some valve behind the front bumper. My plan was to replace that line after I finished the timing belt.
Now I'm wondering if the idle issue is due to the timing belt or that vacuum line. I disconnected the vacuum line from the throttle body, but that didn't help.
I've done many timing belts before, and there were times where I was a tooth or half a tooth off. But in those cases, the car just ran bad like it had a miss. It didn't have a high idle.
I just finished the timing belt on a 420A. The marks all looked dead on after turning the crank two turns by hand. I put the rest of the parts back together and started it up. The motor immediately shot up to 3000 RPM and after a few seconds, started climbing past 4000 RPM when I shut it off.
The car had no idle issues at all before I changed the timing belt.
What's the deal?
Incidently, when I was removing the motor mount bracket from the engine, I lowered the motor while one of the bolts was sticking out. The bolt came down on a metal vacuum line and crushed it. It's the line that runs from the throttle body to some valve behind the front bumper. My plan was to replace that line after I finished the timing belt.
Now I'm wondering if the idle issue is due to the timing belt or that vacuum line. I disconnected the vacuum line from the throttle body, but that didn't help.
I've done many timing belts before, and there were times where I was a tooth or half a tooth off. But in those cases, the car just ran bad like it had a miss. It didn't have a high idle.
