2.9 help

[Psychopete]

It's possible that a head might be cracked, make sure to have the head magnafluxed if you remove it. It's very possible to screw up a head gasket job, make sure to use new head bolts. Triple check that the gasket is on correctly, follow the prodecure for installing with a good torque wrench to a tee (slightly oil the threads on the head bolts to prevent friction from fudging the wrench readings, it's recommended that you run a tap through the threads to clean up before installing), and you should be okay.

How does the motor run if you pull the SPOUT? Do you have a CEL present?

When the SPOUT is open, the ICM will use the PIP signal from the distributor to fire the coil at a fixed rate (instead of allowing the PCM to adjust). The pick up in the distributor creates a digital PIP signal, which the ICM and PCM use to determine engine RPM and engine location. Is there a good known distributor that you could swap up with? Sounds like a bad pickup, but it could also be the TACH - or a flyback voltage that's created from the primary side of the coil that's sent back to the PCM after the coil fires. I wouldn't keep an intermittent wiring problem, or bad connection out of mind... Some of that TFI-IV gets kind of indepth, I would suggest doing some reading, I am still learning...

Pete

 

[tomcat]

im pulling the head off the pass side...there was milk lookin oil in the cuvers

 

[tomcat]

well i never got to it..i pulled the intake and the v-Gasket was out...i put it all back together and it ran good for about 5 min..thin back to runing like crap...

 

[Natedog]

...How does the motor run if you pull the SPOUT? Do you have a CEL present?

When the SPOUT is open, the ICM will use the PIP signal from the distributor to fire the coil at a fixed rate (instead of allowing the PCM to adjust). The pick up in the distributor creates a digital PIP signal, which the ICM and PCM use to determine engine RPM and engine location. Is there a good known distributor that you could swap up with? Sounds like a bad pickup, but it could also be the TACH - or a flyback voltage that's created from the primary side of the coil that's sent back to the PCM after the coil fires....

What is ICM? Signs of bad pickup coil are?