Nevada City Sparky
Jeeper
- Location
- Nevada City, CA
1989 4.0L Auto
OK, I just put my engine back in and think I must have forgotten to hook something up. Most sensors are new and wiring is pretty clean, so I think its something simple. Here's the issue:
Starts immediately and goes to correct idle of ~800 RPM on Tach.
If I give it some gas, it returns to idle at about 900 RPM.
Do it again, it goes to 1000 RPM. Usually peaks out at 1200 RPM idle.
Turn of engine and then turn on and idle jumps to 2500+ RPM. 2/3 of the time reving will bring it back to 800 RPM, sometimes turning off then on again brings it back to 800 RPM.
So, I'm thinking I might have missed a ground under the dipstick (only remember hooking up one wire other than bat cable).
Anything else to check? Its 110° here and when I get to the shop I want to isolate as quick as possible. It's gotta be 15° hotter in there.
If it ain't a ground, I'm thinking Power Latch Relay, then maybe TPS (which is new) and IAC.
OK, I just put my engine back in and think I must have forgotten to hook something up. Most sensors are new and wiring is pretty clean, so I think its something simple. Here's the issue:
Starts immediately and goes to correct idle of ~800 RPM on Tach.
If I give it some gas, it returns to idle at about 900 RPM.
Do it again, it goes to 1000 RPM. Usually peaks out at 1200 RPM idle.
Turn of engine and then turn on and idle jumps to 2500+ RPM. 2/3 of the time reving will bring it back to 800 RPM, sometimes turning off then on again brings it back to 800 RPM.
So, I'm thinking I might have missed a ground under the dipstick (only remember hooking up one wire other than bat cable).
Anything else to check? Its 110° here and when I get to the shop I want to isolate as quick as possible. It's gotta be 15° hotter in there.
If it ain't a ground, I'm thinking Power Latch Relay, then maybe TPS (which is new) and IAC.