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 Dan Your Own Question
Dan, Technician
Category: Jeep
Satisfied Customers: 23997
Experience:  Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
Type Your Jeep Question Here...
Dan is online now
A new question is answered every 9 seconds

P0340, 04 grand cherokee, replaced cam position sensor, the

Customer Question

JA: What is the model/year of your Jeep?
Customer: 04 grand cherokee
JA: Are you fixing your Grand Cherokee yourself? What have you tried so far?
Customer: replaced cam position sensor
JA: Which particular sensor are you asking about? And have any trouble codes been triggered?
Customer: the cam position sensor near back of engine code p0340
JA: Anything else you want the mechanic to know before I connect you?
Customer: was running well after replacement but now engine light on again and mosfiring
Submitted: 8 months ago.
Category: Jeep
Expert:  Dan replied 8 months ago.

Hello, my name is ***** ***** I'm here to help get your problem solved.

Expert:  Dan replied 8 months ago.

What engine do you have? Thanks.

Customer: replied 8 months ago.
4.0 I-6
Expert:  Dan replied 8 months ago.

This code can also be caused by the crankshaft position sensor since they share the same circuit. A lot of people replace the cam and crank sensors together if there is a code for either so. The crankshaft position sensor is also a common thing to fail on this engine so I'd recommend replacing it next. Let me know if you have more questions, thanks.

Customer: replied 8 months ago.
i did that
Customer: replied 8 months ago.
i did that
replaced cps
Customer: replied 8 months ago.
are you getting my texts?
Expert:  Dan replied 8 months ago.

Yes I am, sorry about the delay. Next step is to test wiring between crank sensor and PCM and also wiring between cam sensor and PCM. Give me a minute and I'll upload diagrams for you.

Customer: replied 8 months ago.
i think i had better have the local shop look at it - i pay just $5 for this yes?
Customer: replied 8 months ago.
no need for diagrams
Expert:  Dan replied 8 months ago.

No you don't need to pay anything. Email***@******.*** and request a refund. Have a good evening.

Customer: replied 8 months ago.