TNScrambler
NAXJA Forum User
- Location
- Knoxville, TN
ok, so it still doesn't start when cold without either, but when it does start it purs like a kitten!
Ok, so while reading through my FI manual (about 4 hrs in) we found that the "Sync Signal Generator" otherwise known as a pickup to any non-renix system sends signal to the ECM whether the motor is at #1 or #6, if this signal is not recieved the ecm picks a cylinder and starts its ignition and injection timing.....so we checked and it was out of specs, so in went a new distributor, did nothing, exchanged it as defective, put new one in, changed out to a used ecm, checked to make sure injectors where fireing, install new non-fouled plugs, a little squirt of either and she fires, runs great!
Are there two Coolant temp sensors on this system....the one in the side of the block under the intake (which is the one who sends signal to ecm) seems to be MIA (missing in action), however the guage on the dash seems to be working properly.
This jeep has not run properly since I purchased it, it feels like a great milestone that it does now....however still very frustrating that it won't start when cold.
My next step is to go through and try to find the MIA coolant temp sensor in block and go through and try to figure out why it won't start.
Thanks to all who have helped out so far, but, any sugestions as to starting when cold would be greatly appriciated!
Thanks,
Justin Ray
Ok, so while reading through my FI manual (about 4 hrs in) we found that the "Sync Signal Generator" otherwise known as a pickup to any non-renix system sends signal to the ECM whether the motor is at #1 or #6, if this signal is not recieved the ecm picks a cylinder and starts its ignition and injection timing.....so we checked and it was out of specs, so in went a new distributor, did nothing, exchanged it as defective, put new one in, changed out to a used ecm, checked to make sure injectors where fireing, install new non-fouled plugs, a little squirt of either and she fires, runs great!
Are there two Coolant temp sensors on this system....the one in the side of the block under the intake (which is the one who sends signal to ecm) seems to be MIA (missing in action), however the guage on the dash seems to be working properly.
This jeep has not run properly since I purchased it, it feels like a great milestone that it does now....however still very frustrating that it won't start when cold.
My next step is to go through and try to find the MIA coolant temp sensor in block and go through and try to figure out why it won't start.
Thanks to all who have helped out so far, but, any sugestions as to starting when cold would be greatly appriciated!
Thanks,
Justin Ray