Question about 1995 Jeep Grand Cherokee
I have a 1995 model Jeep Grand Cherokee Laredo 4.0 L. My valve tapet starts to knock when vehicle running reaches 1500 rpm. I have replaced rotor, distributor cap, plugs, high-tension wire, temperature sensors and TPS. What is wrong with my engine? I intend to replace intake manifold air temperature sensor and manifold air pressure sensor, will it eliminate my problem?
First, nothing you have done has anything to do with valve tappet noise. What is your oil pressure? Have you positively identified the noise as a lifter (tappet), OR COULD IT BE AN ENGINE BERARING OR WRISTPIN? Other than tearing it down and replacing lifters, rockers or pushrods or possibly even the cam, if oil pressure is good, change the oil and put a quart of Marvel oil in there. If that does not clear it up in a few days, you will have to go inside the engine. You likely have over 160k on that engine...consider using a replacement. Get an older tech to listen to it...it takes years to be able to differentiate between different component noises with any accuracy.
Personally, without hearing it myself, I'm betting it's a rod knock.
Posted on Feb 20, 2009
a 6ya expert can help you resolve that 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.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jan 31, 2014 | 1997 Jeep Grand Cherokee
Jun 18, 2013 | 1995 Jeep Grand Cherokee
Nov 13, 2012 | 1995 Jeep Grand Cherokee
Oct 30, 2012 | 1999 Jeep Grand Cherokee
Oct 31, 2009 | 1997 Jeep Grand Cherokee
Aug 19, 2009 | 2004 Jeep Grand Cherokee
Jun 12, 2009 | 1995 Jeep Grand Cherokee
Oct 07, 2008 | 2002 Jeep Grand Cherokee
May 25, 2017 | 1995 Jeep Grand Cherokee
280 people viewed this question
Usually answered in minutes!