Ford Ranger idles rough
Post Fiend
Joined: Jul 2005
Posts: 8,462
Likes: 4
From: Durant, OK (SOSU)
And trace the vacuum lines from the vacuum tee, trace them to check for leaks further down the lines.
And finally, try spraying a little throttle body cleaner around the seals on the intake (ie TB to intake, upper intake to lower intake) and check for bubbles. Could be a gasket going out as well.
And finally, try spraying a little throttle body cleaner around the seals on the intake (ie TB to intake, upper intake to lower intake) and check for bubbles. Could be a gasket going out as well.
Postmaster
Joined: Jan 2003
Posts: 4,417
Likes: 3
From: Durham, NC
Originally Posted by RangerPilot
And finally, try spraying a little throttle body cleaner around the seals on the intake (ie TB to intake, upper intake to lower intake) and check for bubbles. Could be a gasket going out as well.
the engine is running, you spray the upper to lower intake, or lower intake to heads areas, and if there is a vacuum leak, it will be pulled into the engine (not blown out to make bubbles), and you will get an RPM change.
You should also check the torque on the lower intake bolts.
Have you been running a K&N air filter? If so, the MAF sensor will coat with dirt & oil, and will cause a lean condition. If so, clean the MAF sensor, and replace the K&N with a OEM paper filter.
Last edited by Bob Ayers; Jan 1, 2007 at 07:24 AM.
Post Fiend
Joined: Jan 2003
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From: Connecticut
