SPONSORED LINKS

Why does my Nissan run good when cold but rough when hot?

Tiny
MJSTUMP
  • MEMBER
  • 1996 NISSAN QUEST
  • 200,000 MILES
I have replaced the knock sensor, plugs, plug wires and the fuel filter. It runs great when it is cold but once it warms up it acts like it is running out of gas and pops through the exhaust.
Thursday, August 25th, 2011 AT 10:21 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
https://www.2carpros.com/articles/engine-hesitates

Could be caused by one of the following below

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Knock sensor
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard it and keep testing.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
-2
Saturday, August 27th, 2011 AT 9:30 PM

Please login or register to post a reply.

Related Engine Runs Cold Content

VIEW MORE

Sponsored links