Help, with post Limp and Boost issues
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Audiworld Junior Member
Joined: Apr 2006
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Help, with post Limp and Boost issues
I did a search and have seen a couple of guys with the same problem but never saw a solution.
Car is a 2000 180Q
Got a coolant flush last week and after hitting 15psi a few times, I hit limp mode (5psi) and I got a check engine light and a code of 17544 - Fuel Trim: Bank 1 (Add): System too Lean P1136. I heard a hissing sound and found the cracked vacuum hose. I replaced the hose, cleared all the codes with VAG, turned the boost machine off, took out the ****/3bar, and I can only hit 7psi on APR 91 software. I tried disconnecting the battery for a few hours with no help either.
The forge DV sounded ok too at 7psi, with the regular swoosh between shifts.
Can anyone help, THANKS!
Car is a 2000 180Q
Got a coolant flush last week and after hitting 15psi a few times, I hit limp mode (5psi) and I got a check engine light and a code of 17544 - Fuel Trim: Bank 1 (Add): System too Lean P1136. I heard a hissing sound and found the cracked vacuum hose. I replaced the hose, cleared all the codes with VAG, turned the boost machine off, took out the ****/3bar, and I can only hit 7psi on APR 91 software. I tried disconnecting the battery for a few hours with no help either.
The forge DV sounded ok too at 7psi, with the regular swoosh between shifts.
Can anyone help, THANKS!
Thread Starter
Audiworld Junior Member
Joined: Apr 2006
Posts: 73
Likes: 0
I haven't done a leak test but
it was boosting fine prior to hitting limp. I would hold 15psi no problems. Even before I hit limp mode, I knew I had a vacuum leak because I could hear it and it still held 15psi fine. It was after the coolant flush that I got the code 17544 - Fuel Trim: Bank 1 (Add): System too Lean P1136 and finally decided to search for and replace the hose. Could it be the coolant sensor, I replaced it with the green one 2yrs ago. Maybe something went wrong after the coolant flush?
I replaced both o2 sensors 5000miles ago too. MAF isn't that old either, 10K ago??? Coil packs and plugs were done 10K agoo too.
It's weird, I was getting 15psi with a cracked hose and now I'm getting 7psi with a fixed hose.
I replaced both o2 sensors 5000miles ago too. MAF isn't that old either, 10K ago??? Coil packs and plugs were done 10K agoo too.
It's weird, I was getting 15psi with a cracked hose and now I'm getting 7psi with a fixed hose.
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