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-   -   No spark and no injector pulse (https://www.cherokeeforum.com/f5/no-spark-no-injector-pulse-7263/)

sinic 12-07-2008 09:56 AM

No spark and no injector pulse
 
1995 GC
I6 4.0
Auto

My father-in-law removed the transmission and rebuilt it. In the process of removing it he cut the crank position sensor.

We replaced the sensor with a new one. Transmission back in. We are still not getting fire or injector pulse. Starter works, battery is fine. :brickwall:

We've checked:
2 new Crank position sensors in the bell housing.
Swapped out the asd relay
We are only getting .18 volts going to the coil .30 when cranking
Nothing from the coil to the spark plugs.
Fuel pump is working
No check engine light
Flywheel is fine not bent

Also there is a red light on the driver side on the dash right under the window. It only has the stock keyless entry. It only comes on when the key is left on.

We believe its the camshaft position sensor under the distributor or the ecu.

What do you think?

Thanks

-Ford

tsconver 12-07-2008 10:21 AM


Originally Posted by sinic (Post 84508)
1995 GC
I6 4.0
Auto

My father-in-law removed the transmission and rebuilt it. In the process of removing it he cut the crank position sensor.

We replaced the sensor with a new one. Transmission back in. We are still not getting fire or injector pulse. Starter works, battery is fine. :brickwall:

We've checked:
2 new Crank position sensors in the bell housing.
Swapped out the asd relay
We are only getting .18 volts going to the coil .30 when cranking
Nothing from the coil to the spark plugs.
Fuel pump is working
No check engine light
Flywheel is fine not bent

Also there is a red light on the driver side on the dash right under the window. It only has the stock keyless entry. It only comes on when the key is left on.

We believe its the camshaft position sensor under the distributor or the ecu.

What do you think?

Thanks

-Ford

are you using the paper spacer with the crank sensor? If not you maybe damaging the crank sensor as soon as you try and start it.

drakan1908 12-07-2008 11:14 AM

Is it possible that the theft deterrent system is not allowing it to start? The red light is the light that shows the alarm is on. Try locking and unlocking the door several times with the remote...:dunno:

tsconver 12-07-2008 11:16 AM


Originally Posted by drakan1908 (Post 84558)
Is it possible that the theft deterrent system is not allowing it to start? The red light is the light that shows the alarm is on. Try locking and unlocking the door several times with the remote...:dunno:

did not think of that, I think you can also reset it by turning the door look with the key three times or something like that. If you pulled the battery connection off it will default to theft mode i think.

sinic 12-07-2008 12:51 PM

The red light only turns on after I leave the key in the on position for longer than a minute.

How thick is this paper gasket?

sinic 12-07-2008 06:27 PM

I tried all kinds of things today to shut off the theft mode. Unlocking from the inside 3+ times, key unlock 3+ times nothing.

I also swapped out the Hall effect sensor under the distributor and nothing.

My last thing would be the pcm. I'm actually thinking about tell him to send it in this may be the one car that stumps me.

can'tstopjeepen 12-08-2008 09:04 PM

My alarm on my old Ckerokee Limited had to be disarmed by locking and unlocking the driver door two times. Drove me crazy till I figured it out:brickwall:

tsconver 12-09-2008 01:58 PM


Originally Posted by sinic (Post 84600)
The red light only turns on after I leave the key in the on position for longer than a minute.

How thick is this paper gasket?

not sure, it comes with a MOPAR crank sensor and the FSM for at least 03 is pretty specific about using it to install the sensor to prevent damage tothe sensor.

nick_n_ii 12-09-2008 02:09 PM

the CPS for the ZJ don't have a paper spacer. I had to replace mine twice (once for dying and once from cutting the wire{opps})....

nick_n_ii 12-09-2008 02:10 PM

Did you guys cut the wire that goes to the neutral safety switch on the trans? Mine broke and that kept mine from starting....('94 4.0L)

sinic 12-09-2008 02:40 PM

The starter works. So I know that safety switch is alright.

As for the sensor spacer I replaced many and never had a problem like this. Most of the time I always drop it in and lift it up slightly and tighten it down just to make sure. This sensor I have done the same with no change. The sensor is not being hit. Not a scratch on it. This is number three with the gasket installed.

I'm pretty sure it's the computer. Does anyone have an extra. Can't seem to find one at a reasonable price close.


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