Dilly’S Willy
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Not sure if this has been posted already. Jeep created a TSB for the 3.6 related to the cams high profile lift system.
Essentially the TSB is for the oil pump/actuator that engages the high lift lobe, activating prematurely when RPMs are below the required RPM to activate, causing failures and sometimes catastrophic failure.
EDIT: THIS IS NOT ABOUT THE AMOUNT OF OIL PRESSURE AT ANY GIVEN RPM, THIS IS ABOUT THE HIGH LIFT CAM LOBE BEING ACTIVATED WHEN IT'S NOT SUPPOSED TO AND POSSIBLY CAUSING DRIVABILITY ISSUES, MOST NOTICEABLE AT IDLE/LOW RPM. THERE'S A SOFTWARE UPDATE THAT SHOULD FIX THIS, ACCORDING TO THE DEALER WHO TOLD ME ABOUT THIS TSB, WHICH ALSO STATED IT'S AN EXTREMELY LIMITED NUMBER OF AFFECTED VEHICLES. THEY TOLD ME THIS IS NOT THE SAME TSB ABOUT CAM WEAR.
They won't tell you about this at the dealer unless you come in for a symptom due to this or another cam issue. Even if you go in for a cam issue, they may not tell you about this TSB. I only found out when I asked about an intermittent rattle around 3,200rpm and heavy engine load in 3rd gear. They very briefly mentioned it and I asked because I'm nosy for knowledge.
It's not as common as the lifter failures. It's not as common as any other failure it seems. But it does happen, and they do know about it. So if you think this is happening to you, ASK THEM.
Again, this is NOT about oil pressure being high below a certain rpm, as some comments seem to think it is. This is about the high lift lobe being activated by the pcm prematurely and possibly causing drivability issues. No I haven't heard back since talking with said dealer again recently as they were behind schedule and understaffed. Their assistant service manager is also one of their lead technicians. They also mentioned this is NOT the same TSB that most wrangler/gladiators are known for.
- When I have the TSB number, I will provide it.
And if you don't have anything polite/positive to say, go be dramatic elsewhere.
Essentially the TSB is for the oil pump/actuator that engages the high lift lobe, activating prematurely when RPMs are below the required RPM to activate, causing failures and sometimes catastrophic failure.
EDIT: THIS IS NOT ABOUT THE AMOUNT OF OIL PRESSURE AT ANY GIVEN RPM, THIS IS ABOUT THE HIGH LIFT CAM LOBE BEING ACTIVATED WHEN IT'S NOT SUPPOSED TO AND POSSIBLY CAUSING DRIVABILITY ISSUES, MOST NOTICEABLE AT IDLE/LOW RPM. THERE'S A SOFTWARE UPDATE THAT SHOULD FIX THIS, ACCORDING TO THE DEALER WHO TOLD ME ABOUT THIS TSB, WHICH ALSO STATED IT'S AN EXTREMELY LIMITED NUMBER OF AFFECTED VEHICLES. THEY TOLD ME THIS IS NOT THE SAME TSB ABOUT CAM WEAR.
They won't tell you about this at the dealer unless you come in for a symptom due to this or another cam issue. Even if you go in for a cam issue, they may not tell you about this TSB. I only found out when I asked about an intermittent rattle around 3,200rpm and heavy engine load in 3rd gear. They very briefly mentioned it and I asked because I'm nosy for knowledge.
It's not as common as the lifter failures. It's not as common as any other failure it seems. But it does happen, and they do know about it. So if you think this is happening to you, ASK THEM.
Again, this is NOT about oil pressure being high below a certain rpm, as some comments seem to think it is. This is about the high lift lobe being activated by the pcm prematurely and possibly causing drivability issues. No I haven't heard back since talking with said dealer again recently as they were behind schedule and understaffed. Their assistant service manager is also one of their lead technicians. They also mentioned this is NOT the same TSB that most wrangler/gladiators are known for.
- When I have the TSB number, I will provide it.
And if you don't have anything polite/positive to say, go be dramatic elsewhere.
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