cam sensor problem

backslider · 01-23-2009, 04:26 PM

Anyone have the specs on the airgap between the pick up on the back of cam sprocket to the nub on the cam sensor. Car has been apart for 3 months and ran fine before I took it apart. Machine shop broke the tab for the cam sensor and was welded back into place. Now I only get two coils firing at a time and the car won't start. Any help would be appreciated.

also when i move the sensor close to the sprocket i only get two coils firing. when i pull it out at about a .25 gap all four will fire but when i assemble everything back the car wont start.

Car is a swapped gc8 with a legacy twin turbo motor

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Rexfan · 01-23-2009, 04:52 PM

I looked into this once before. Below is info from my Tuner.

"I believe the gap should be around .028" between the sensor and trigger wheel".

backslider · 01-23-2009, 05:00 PM

I thought a quater inch was waaaaaaaay off.

Rexfan · 01-23-2009, 08:08 PM

I'm curious how this turns out for you. Let us know if it works better.

backslider · 01-23-2009, 08:20 PM

I have a feeling the cam sensor is bad or the sensor bracket isn't in line with the cam sprocket pick ups. The car ran fine before I pulled the heads for head gaskets. I also did the clutch, replaced tranny and rear end. All 02 wrx drivetrain, including flywheel.

01-23-2009, 04:26 PM	#1
backslider Scooby Specialist Member#: 43196 Join Date: Sep 2003 Chapter/Region: TXIC Location: Cypress Vehicle: 1998 2.5 RsT 93GF 95GC 02GD 01SF-T	cam sensor problem Anyone have the specs on the airgap between the pick up on the back of cam sprocket to the nub on the cam sensor. Car has been apart for 3 months and ran fine before I took it apart. Machine shop broke the tab for the cam sensor and was welded back into place. Now I only get two coils firing at a time and the car won't start. Any help would be appreciated. also when i move the sensor close to the sprocket i only get two coils firing. when i pull it out at about a .25 gap all four will fire but when i assemble everything back the car wont start. Car is a swapped gc8 with a legacy twin turbo motor * Registered users of the site do not see these ads.

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01-23-2009, 04:52 PM	#2
Rexfan Scooby Specialist Member#: 50993 Join Date: Dec 2003 Chapter/Region: Tri-State Location: Philly Vehicle: 02 WRX Wagon 2.5/Blouch Dom 3/Meth/6sp	I looked into this once before. Below is info from my Tuner. "I believe the gap should be around .028" between the sensor and trigger wheel".

01-23-2009, 05:00 PM	#3
backslider Scooby Specialist Member#: 43196 Join Date: Sep 2003 Chapter/Region: TXIC Location: Cypress Vehicle: 1998 2.5 RsT 93GF 95GC 02GD 01SF-T	I thought a quater inch was waaaaaaaay off.

01-23-2009, 08:08 PM	#4
Rexfan Scooby Specialist Member#: 50993 Join Date: Dec 2003 Chapter/Region: Tri-State Location: Philly Vehicle: 02 WRX Wagon 2.5/Blouch Dom 3/Meth/6sp	I'm curious how this turns out for you. Let us know if it works better.

01-23-2009, 08:20 PM	#5
backslider Scooby Specialist Member#: 43196 Join Date: Sep 2003 Chapter/Region: TXIC Location: Cypress Vehicle: 1998 2.5 RsT 93GF 95GC 02GD 01SF-T	I have a feeling the cam sensor is bad or the sensor bracket isn't in line with the cam sprocket pick ups. The car ran fine before I pulled the heads for head gaskets. I also did the clutch, replaced tranny and rear end. All 02 wrx drivetrain, including flywheel.