Question Hello Roland
My 2001 Dodge Ram starts up promptly but after a few minutes starts to sputter and shuts off while in idle and sometimes while driving down the road. I was looking over my hoses & thought maybe they were not connected on or cracked. When I disconnect the PC valve hose it idles fine and runs smoothly but has a loud hissing sound and when I replace it it goes back to idling rough & shuts off. I recently replaced the entire motor due to blown head gaskets. Does the timing need adjusting possibly ? This is a used motor ( 120,000 miles) and may have been sitting up for a while in a warehouse. Could this be the problem or What ? Thank you so much for your help
Answer Hi Eric,
The loud hissing sound is normal after removing the hose. Try taking off the other hose from the valve and then shake the valve to make sure the interior spring-loaded valve cylinder makes s rattling sound which indicates it is free to move (which is good). If there is no rattle, then replace the PCV valve.
The fuel/air mixture may be "off value" when warmed up as indicated that it idles when cold but then has the problem after warm up. There is self-diagnostic capability that you can access with the ignition key: turn it "on-off-on-off-on and leave on" doing that in 5 seconds or less elapsed time. Then watch the odometer window of the speedometer to see the mileage reading replaced by a 4-digit number preceded by a P. Let me know the number(s) and we'll go from there. It may be that the engine temperature sensor is not getting a proper signal to the powertrain control module telling it to lean-out the mixture as the engine is warming.
The timing is not typically adjustable for engines with electronic rotational position sensors. So let us see what fault code numbers you might get.
Please read the PS (below) and respond to it.
Get a Free Fast answer to your repair question about a Chrysler/Dodge/Plymouth car, minivan, SUV, or truck. Problems with electronically controlled engines and transmissions as well as body wiring problems are my specialty. This free troubleshoot advice forum helps you diagnose faults, minimize repair costs or do-it-yourself.
I answer questions seven days a week and respond to you in about 30 minutes. "Maxed Out" means I am answering another question or briefly unavailable so try again later.
I have do-it-yourself experience (50+ years) and a library of 100 1982-2012 Chrysler factory shop manuals and 20 multi-manual Chrysler Corp. CD's.
I was voted "Top expert" from 2010-2015 here at AllExperts, and have answered 20,000+ questions.
Five decades as a 'do-it-yourselfer' on domestic and imported cars
Organizations Yahoo Autos Group called The Chrysler Lebaron Club (co-moderator)
Education/Credentials Degrees in Physics/bruised knuckles.
Awards and Honors "Top expert" of 2010, 2011, 2012, 2013, 2014, and 2015 here at Allexperts.
Quickest "average response time" at Allexperts (currently no. 1).