Issues with GM Upgrade
Thread Starter
Joined: 01-03-2009
Posts: 6
From: cnada
Issues with GM Upgrade
Hey guys posting for a friend. He has a hhr ss and did the gm performance mod and the thing is auto.
His boost is all over the place sometime he goes to accelerate and wont boost. Then it will hit boost cut.
His boost is all over the place sometime he goes to accelerate and wont boost. Then it will hit boost cut.
Senior Member
Joined: 01-25-2008
Posts: 132
From: Bergen County, NJ
Im having the same problem, I just had the entire kit reinstalled to make sure tha the wiring and everything was correct and now it misfires and the turbo surges, just kick on another CEL, any ideas????
Senior Member
Joined: 01-25-2008
Posts: 132
From: Bergen County, NJ
gosh i hope not, i have had the entire kit installed twice at two different dealers to make sure it was done correctly. could it be the turbo boost valve?? could that cause a misfire and surging??? AAAHHHHHH superchargers are soooooo much easier
Senior Member
Joined: 07-16-2008
Posts: 184
From: San Antonio
But sooooo more efficient.
Senior Member
Joined: 12-09-2008
Posts: 224
From: Detroit Area
CEL with the Kit
Here are some possibles:
No Start – Most likely cause is wires #1 & #3 crossed on the Inlet Duct TMAP sensor.
P2227 Code Set - 1. Reflash not completed correctly. 2. Car was driven on new sensors without the reflash. (Takes 2 key cycles to set)
P0236 Code set – 1. Only one sensor replaced. On HHR SS’s the TMAP in the inlet duct is very hard to access. 2. TMAP-Inlet Duct wired exactly backward thinking pin #4 is Pin #1.
Senior Member
Joined: 08-06-2008
Posts: 1,761
From: Grand Haven, MI
do you know what code is set?
Here are some possibles:
No Start – Most likely cause is wires #1 & #3 crossed on the Inlet Duct TMAP sensor.
P2227 Code Set - 1. Reflash not completed correctly. 2. Car was driven on new sensors without the reflash. (Takes 2 key cycles to set)
P0236 Code set – 1. Only one sensor replaced. On HHR SS’s the TMAP in the inlet duct is very hard to access. 2. TMAP-Inlet Duct wired exactly backward thinking pin #4 is Pin #1.
Here are some possibles:
No Start – Most likely cause is wires #1 & #3 crossed on the Inlet Duct TMAP sensor.
P2227 Code Set - 1. Reflash not completed correctly. 2. Car was driven on new sensors without the reflash. (Takes 2 key cycles to set)
P0236 Code set – 1. Only one sensor replaced. On HHR SS’s the TMAP in the inlet duct is very hard to access. 2. TMAP-Inlet Duct wired exactly backward thinking pin #4 is Pin #1.
ie: lower tmap sensor mounted incorrectly, loose charge pipe clamp, etc?
Senior Member
Joined: 01-25-2008
Posts: 132
From: Bergen County, NJ
the dealer keeps telling me that the only code that is coming up is a misfire code.........only happens when the car is cold and is very violent when it happens. I contacted GM Performance and had them contact the dealer with tech support. Nothing like doing my dealerships job for them
Senior Member
Joined: 12-09-2008
Posts: 224
From: Detroit Area
Boost all over the place issue
Bill, doesn't the symptom (boost all over the place) sound more like a boost leak issue?
ie: lower tmap sensor mounted incorrectly, loose charge pipe clamp, etc?
ie: lower tmap sensor mounted incorrectly, loose charge pipe clamp, etc?
You are correct
that the first place to look for erratic boost is to make sure all the hoses are seated and all the clamps are in place and tight.I am not sure of ALL of the symptoms of the P0226.
With the kit I have not seen or heard of erratic boost being caused by the kit, it has always been something else.
Bill
