runs rough at speed - Maintenance & Troubleshooting discussion in Forkliftaction's forums

Discussion:
runs rough at speed

Hey folks,
Got a P5000 Serial: AT3501175 with a K25L nissan engine.

It will start up and idle okay, and if you slowly advance the throttle it will got to full speed, but if you hit the pedal fast (as an operator does) it falls on it's face and studders and stammers all over its' self.
I've got NO CODES. It does have aftermarket (S**T) coil packs BUT, it will accelerate to full speed if you accel slowly. New OEM Cam and Crank sensors.
I appreciate your help!
Kirk

Posted 6 Oct 2015 03:57
By kirk_t
joined 1 Oct'15 - 4 messages
Colorado, United States

Post a Reply Report this post

Showing items 1 - 3 of 3 results.

Sort messages by:

there is also a 'learn' procedure (idle air vol) that requires the 'diagnozer&tm software', but this sounds like a faulty assistant injector. I would be tempted to swap a known good assistant injector to test. and their might also be a 'last chance' screen in the throttle body that can get clogged up.

Posted 6 Oct 2015 21:01
Modified 6 Oct 2015 21:02 by poster
By edward_t
joined 5 Mar'08 - 2,334 messages
South Carolina, United States

"it's not rocket surgery"

Post a Reply Report this post

Check the assit solenoid its what its for they do stick also if its the older model they used to have a guze filter in the the manifold not fitted anymore alan

Posted 6 Oct 2015 05:09
By alanmitsi
joined 8 Aug'13 - 151 messages
essex, United Kingdom

Post a Reply Report this post

Could a faulty injector cause this?

Posted 6 Oct 2015 04:59
By kirk_t
joined 1 Oct'15 - 4 messages
Colorado, United States

Post a Reply Report this post

Post your Reply

Forkliftaction accepts no responsibility for forum content and requires forum participants to adhere to our rules of conduct. Click here for more information.

If you are having trouble using the Discussion Forums, please contact us for help.