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 Jake Your Own Question
Jake, Nissan Technician
Category: Nissan
Satisfied Customers: 3992
Experience:  Experienced collision repair technician, Pulaski Tech graduate and DSM hobbyist.
Type Your Nissan Question Here...
Jake is online now
A new question is answered every 9 seconds

Pathfinder: . My 2000 pathfinder is jerking heavily once

Customer Question

Hi. My 2000 pathfinder is jerking heavily once the engine is warmed up. Changed fuel pump,spark plugs and wires, rotor, relocated knock sensor, but problem still not fixed. At all. Was thinking of trying the Mass Air Flow Any thoughts?
Submitted: 2 years ago.
Category: Nissan
Expert:  Jake replied 2 years ago.
Hi there, thanks for your question.
Jerking or bucking can be caused by a couple different fuel or spark cut issues.
What codes are you getting?
Customer: replied 2 years ago.
I'm not an expert/mechanic. I took it from a mechanic who seemed to be stumped. He mentioned was the knock and crankshaft sensor codes. Both were replaced(knock sensor relocated)
Expert:  Jake replied 2 years ago.
Thanks, ***** *****
Was the distributor replaced or just the cap and rotor?
Customer: replied 2 years ago.
Just the cap and rotor.
Expert:  Jake replied 2 years ago.
Thanks, ***** ***** bucking is caused by either a distributor issue (which usually throws a cam sensor code) or a fuel cut issue from a bad injector or fuel pump.
We don't see the MAF generally cause bucking. It's usually poor idle and bogging under acceleration.
If you had a scan tool that reads live data we could rule out a MAF issue likely.
Let me know.
Expert:  Jake replied 2 years ago.
I just wanted to check back and see how you made out?
If you still need assistance please let me know and I will be happy to help anyway I can. If you have a tool to read live data also let me know so I can tell you what we are looking for here.