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 mike switzer Your Own Question
mike switzer
mike switzer,
Category: Nissan
Satisfied Customers: 445
Experience:  lead diagnostic tech at Aamco
93239347
Type Your Nissan Question Here...
mike switzer is online now
A new question is answered every 9 seconds

Engine idles smoothly. Starts bucking at around 2500-3000

Customer Question

Engine idles smoothly. Starts bucking at around 2500-3000 rpm. I can rev engine above 3000 rpm but tach will not go beyond 3000k ?!! Have replaced knock sensor, PCV, plugs, wires, distributor, rotor, and most recently the mass air flow sensor (yesterday). Still have the problem of engine bucking. What's next to try?
Submitted: 6 months ago.
Category: Nissan
Expert:  mike switzer replied 6 months ago.
this sounds like your tps sensor is not reading properly. do you have access to a scanner that shows data?

Related Nissan Questions