Mechanics

WHY IS MY NUMBER 7 INJECTOR WIRE NOT PULSATING?

2000 Jeep Laredo • 180 miles

Have changed injectors plugs and coils it is missin really bad and the gas millage is awful
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Beccaentler
September 25, 2012.



If you have tested and confirmed the injector is not pulsing, you either have a break in the wiring corcuit ot a faulty PCM.

What trouble codes are you getting?

KHLow2008
Sep 25, 2012.
I had someone to put the injector test light on it all cylinders pulsated but number 7. When tested number seven light just stayed on didn't pulsate.

Tiny
Beccaentler
Sep 25, 2012.
If the light stays on, it means the PCM is bad and keeping the circuit grounded. This should trigger trouble codes. Do you have any trouble codes?

KHLow2008
Sep 25, 2012.
It could also mean the wire from injector to PCM is shorted to ground.

KHLow2008
Sep 25, 2012.
What is PCM and what can I do about this problem hopefully an easy fix

Tiny
Beccaentler
Sep 25, 2012.
Power Control Module, meaing the engine computer. If it is a shorted wire or PCM, it would be an easy fix but the cost between the 2 would be vastly different. You need to check/test the wire for shorting.

KHLow2008
Sep 25, 2012.
Ok I will do that Thank You so much for your help

Tiny
Beccaentler
Sep 26, 2012.
You're welcome.

KHLow2008
Sep 26, 2012.