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Go Back > Models > Jeep Grand Cherokee & Commander Forums > ZJ Grand Cherokee Forum > Weird engine problem... Sale EventFS: Jeep Fog Light LED Bulbs! Several Brightness Options! *STOP UNWANTED LIGHT BAR NOISE* with Pandemic LED Light Ba

Unread 08-23-2013, 03:22 PM   #16
Registered User
1998 ZJ 
Join Date: Feb 2012
Location: Wilson, nc
Posts: 602
Originally Posted by jnowak View Post
The flashing light is saying the cat is getting to much o2 and results in the cat getting to hot. Could be a bad cat or misfire. Also one thing I was taught is cat don't die they are killed.
Actually the flashing check engine light is the computers way of saying "Dude, something really bad just happened, shut off the motor"

It's happened to me several times over the years with different vehicle, and a bad misfire will cause it, detonation at the wrong time is bad for any engine, and the computer pretty much runs and hides behind mama's skirt.

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Unread 08-23-2013, 08:37 PM   #17
Tigersan's Avatar
1998 ZJ 
Join Date: Jul 2012
Location: Chicago, Illinois
Posts: 147
Yeah now I know whats up. So originally I took my niner to the shop for lifter replacement because I was almost completely
sure it was the lifters. So they did it, and since they were taking apart half of the engine anyways I gave them new BOSH
4 nozzle injectors, and alternator. So they did everything and when I came to pick the car up, it was still noisy ticking,
pinging, whatever you wanna call it. So I said "Well there's no change whatsoever" and I told them to recheck everything.
So in the end they replaced 2 rockers, and 2 pushrods, and it came out that 2 of the lifters they put in were faulty. So now
I gotta wait. They contacted the company they bought the lifters from, to get the money back for the labor... And they
have to send their own technician to the shop to see whats up... OMFG so now I gotta wait till next week. But I was right
all the way, it WAS the lifters plus some rockers and push rods were abit loose too... Guh I'll keep you guys updated.
Maybe this story will be of use to anyone else with similar problem.

On the good side of the coin... I asked them to take a look on the engine, and tell me if it looks used up or if it looks clean
and good... So they told me that the engine is REALLY clean inside and other than the loose rods rockers and lifter, whole
part they uncovered looks pristine. It doesnt take oil atall, exhaust is clean no smoke or anything. So atleast now I know
that after this job It will be a car for another hundred thou miles...

1998 ZJ 5.9 Limited Platinum 100xxx miles...
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