1997 Jeep Grand Cherokee "wiring ecu pins" Questions

on a 97 jeep grand cherokee, which wire coming on a 97 jeep grand cherokee with a 4.0 6cyl, , which wire coming from the map sensor is the signal wire that goes to the ecu , there are three wires. ...

...ECU sees no spark and ALL fuel is cut, injectors and fuel pump relay ( you never monitored the action of the relay?. and its dead.? i bet?) spark monitoring can fail with good spark, !!! the path, on ...

...it, but I have vast tools in my shop. Even a voltage data logger.... to monitor all ECU pins. The ECU is just logic, if the inputs are wrong so can outputs.' GIGO it's called. Garbage in , Garage

collant sensor bad message center reads coolant sensor bad This problem is frecuently in this models, check the levels, check and clean the plug connections and Reset your ECU. Also, can reviewthe #8 ...

i am getting a bad coolant sensor reading on the information screen what could this be This problem is frecuently in this models, check the levels and Reset your ECU. Review the #8 wire in a ribbon ...

...wiring good changed ecm still nothing when checking for voltage put posative lead from meter on 1from harness &negative lead to good ground i have 5 volts but not from 1&3 on harness also have 2 jb ...

ECU controls charge at all times.) this year, the alternator is not a Standalone ALT> no internal reg. my CHARGE lamp is on, is it? ah, Check battery above is not a verb its a lamp glowing. gotcha.

...ECU, or coolant sensor...But A haynes or chiltons can make things a bit easier when Diagnosing the extra cooling fan.. Or keep on googling... If there was a short to the fan/power/relay system on ...

...ECU/PCM tests. thats correct the light means the EFI (or other parts) needs service. it means SOMETHING IS WRONG. if you had the FSM , and read the page under P0108 youd see the book telling you what ...

jeep starts and runs for awhile then shuts off originally bought the jeep knowing it needed a crank sensor, replaced that and my friend cleared all the codes, jeep ran great, then shut off again, no ...