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Wiring issues

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Jul 10, 2020 | 09:36 PM

Randon Warren

Thread Starter

Newbie

Joined: Jul 2020

Posts: 2

Likes: 0

Model: Cherokee (XJ)

Wiring issues

I have a 2001 jeep cherokee it’s been a great jeep I started having voltage regulator problems the jeep still charges and I can drive it but when I come to a stop the voltage drops down and it is also throwing a p1391 code loss of cam or crank position sensor and I think the voltage is being thrown off I tried new alternator and put a new pcm in it I’m stumped and need help thank you

Jul 10, 2020 | 10:26 PM

4.3L XJ

CF Veteran

Joined: Aug 2008

Posts: 6,588

Likes: 495

From: Chico, CA

Year: 1986

Model: Cherokee

Engine: 4.3L with headers and full 3" exhaust system

Start checking your grounds. They are notorious for causing weird electrical stuff

Jul 11, 2020 | 07:42 AM

BlueRidgeMark

CF Veteran

Joined: May 2012

Posts: 7,965

Likes: 964

From: Lost in the wilds of Virginia

Year: 1998 Classic (I'll get it running soon....) and 02 Grand

Model: Cherokee (XJ)

Engine: 4.0

Start by using some punctuation. We are here to help you, but if you are too lazy to even TRY to use correct punctuation to make your post readable for us, forget it.

https://duckduckgo.com/?q=why+punctu...=v171-1&ia=web

Jul 11, 2020 | 07:47 AM

dave1123

Old fart with a wrench

Joined: Nov 2010

Posts: 14,398

Likes: 740

From: Manlius, east of Syracuse, NY

Year: 2000 XJ Sport & WJ Laredo

Model: Grand Cherokee (WJ)

Engine: 4.0L

Have you checked the battery for being able to hold a charge? What kind of voltages are you getting before starting, while running, at idle, and at different rpms? What IS your idle rpm? Is the battery temperature sensor functioning? As already stated, grounds are the other side of the circuit and are important. Just because they are attached to metal doesn't mean they are grounded.