Question about Jeep J20
My truck was doing the same thing.... replaced the crankshaft sensor first, truck would still die after about 10 minutes of idleing, it back-fired thru the engine and blew off the back of the intake manifold. Pulled the monifold, reglued end-cap and put back in truck. STILL died after idleing for 10 minutes. Code PO320 kept coming up ( crankshaft sensor) researched it and found a bad camshaft sensor can cause crankshaft sensor to act up and give code for the crankshaft sensor. Replaced camshaft sensor and the truck runs like a dream !!!!!! I believe the Manifold was cracked for a while causing the 1299 code reading ( vacuum leak) the back-fire finished it off! I would check the back of your intake manifold for a leak. The combination of fixing the vacuum leak , cam/crankshaft sensors seems to have fixed the problem. GOOD LUCK!!!
Posted on Apr 29, 2009
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
Here's a link to this great service
Posted on Jan 02, 2017
Tips for a great answer:
Nov 17, 2014 | Hyundai Motor 2005 XG350
Apr 10, 2014 | 2004 Kia Optima
Jul 05, 2011 | Mercury Mystique Cars & Trucks
Dec 15, 2010 | 2000 Jeep Grand Cherokee
Nov 18, 2010 | 2004 Ford Explorer
Sep 06, 2010 | Ford Focus Cars & Trucks
Apr 15, 2010 | 2003 Jeep Liberty
Jul 14, 2009 | 1998 Ford Ranger SuperCab
2,250 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: