SPONSORED LINKS

Intermittent crank no start?

Tiny
CORTE.EZ12
  • MEMBER
  • 2007 JEEP GRAND CHEROKEE
  • 3.7L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 270,000 MILES
When I turn the key sometimes the car starts up fine. Then sometimes I turn the key and it’s continuous cranking even if l let go of the key.

I’ll drive somewhere then park, I’ll go attend business come back try to start up again and then it starts just cranking.

Note: sometimes I have to keep turning the key off and on to get it to start up.
SPONSORED LINKS
Tuesday, May 2nd, 2023 AT 9:58 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,949 POSTS
Yep, this happens when the IPM goes out but to be sure we should do a CAN scan to see what comes up, you can get a CAN scanner (Controller Area Network) which will work on most cars from Amazon.

Here is a video to show you how:

https://youtu.be/u-4syLc-ifQ

and

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

Here is how to change the IPM out and I have included the starter wiring diagrams so you can see how the system works. It is easy to replace because it-self learns. Check out the images (below). Please let us know what happens.
Images (Click to make bigger)
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Wednesday, May 3rd, 2023 AT 2:41 PM

Please login or register to post a reply.

Related Engine Not Running Content

How to fix an engine that wont start
VIDEO
How to fix an engine that wont start
Instructional repair video
Engine Not Starting - Top 3 Easy Steps
GUIDE
Engine Not Starting - Top 3 Easy Steps
Over the past 20 years on 2CarPros we have identified the top three problems that are easily fixed. This can save you a trip to the repair garage or calling a tow truck and...
VIEW MORE

Sponsored links