Engine cutting out at higher rpm - bad camshaft position sensor?
#21
Evolving Member
iTrader: (1)
Bumping this old post but we recently had some major issue while attempting to tune my fresh build after putting roughly 1500 problem free street miles on the evo. Once we got it on the dyno after installing the aem v2 and dialing all the maps in the night prior so we had a very good base to start off from. We did somedriveablity and cruise tuning and then tried a clean pull from 3-5k. Right at 4500 the car felt like it hit a rev limiter, fuel cut, brick wall. The fuel was coming in perfect, timing was good, AFR's were in their sweetspot. Tried a few more pulls and same result each time no matter what hidden tables or adjustments we disabled. . We started noticing the turbo was making a weirder spooling sound than it usually did on prior tuning pulls. The PTE DBB 6766 started to develop thrust play this again. So we kinda blamed it on that and pulled it off no big deal. The thrust play wasn't too bad but enough that while moving it you could hear an audible clunk. So I figure the turbo is going bad, not flowin( enough air and is causin this whole issue.
After reading this, I'm convinced that the exhaust cam sensor could on its way out described by the same symptoms you guys had. I've never changed it out 5/6 years I've had this car. Hopefully this clears up my issue. Once I get rid of that PTE Garbage and get a Xona Rotor turbo, should be back to boostin get like a raped ape. I'll update y'all if it fixed it or not. Thanks.
After reading this, I'm convinced that the exhaust cam sensor could on its way out described by the same symptoms you guys had. I've never changed it out 5/6 years I've had this car. Hopefully this clears up my issue. Once I get rid of that PTE Garbage and get a Xona Rotor turbo, should be back to boostin get like a raped ape. I'll update y'all if it fixed it or not. Thanks.
#22
Evolved Member
iTrader: (4)
Well **** me sideways. Maybe this is my issue? I changed the damn head gasket I was getting so desperate for a fix, old gasket ended up being fine.
I'm hitting the terrible wall at high rpm, only in 4th gear when load is high. Feels like off and on fuel cut, but logs showed no reason for any cuts.
I'm hitting the terrible wall at high rpm, only in 4th gear when load is high. Feels like off and on fuel cut, but logs showed no reason for any cuts.
#23
I'm getting cutout again! The behavior is somewhat different this time though. Now it seems to happen more when the engine is cold, but its the same basic scenario where rapid changes in rpm can cause breakup. I guess its time to order another intake cam sensor. Maybe I'll replace the exhaust cam sensor as well.
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SWOLN (Aug 30, 2017)
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