How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Amedee Your Own Question
Amedee
Amedee, Jeep Technician
Category: Jeep
Satisfied Customers: 24432
Experience:  ASE certified Technician advanced level specialist. Wisconsin certified emissions state inspector
279429
Type Your Jeep Question Here...
Amedee is online now
A new question is answered every 9 seconds

2001 Jeep grand cherokee laredo: sensor replaced..crank sensor

Resolved Question:

I have a 2001 Jeep grand cherokee laredo 4 wd. I am getting the P1391 code. I have recently had the cam shaft sensor replaced as well as the crank sensor replaces with the housing. The jeep sputters for just a few seconds and then runs fine. I am not sure what else to check or have checked.
Submitted: 4 years ago.
Category: Jeep
Expert:  Amedee replied 4 years ago.
Hello!

If the camshaft and crankshaft position sensors have been replaced and the timing chain is not streched or jumped time, this code is usually due to a broken or cracked flex plate or the camshaft and or crankshaft signals out of sync with eachother. You can check the hold-down clamp on the oil pump drive housing to see if there are marks indicating that the oil pump drive housing has rotated.
Customer: replied 4 years ago.

If the oil pump drive housing has rotated this indicates that he camshaft and or crankshaft signals are out of sync with each other or does this indicate another possible problem?

 

Expert:  Amedee replied 4 years ago.
Exactly.. this means that the cam and crank signals will be out of sync with each other and will set this code.
Amedee and other Jeep Specialists are ready to help you