Throwing Codes
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Junior User
Joined: Oct 2009
Posts: 77
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From: Navarre
Throwing Codes
I just finished doing the GT40 mod. Engine runs great but is throwing some codes.
565 - Canister Purge Solenoid Circuit Fault
172 - O2 sensor, Lean
332 - Insufficient EGR Flow
I had to extend a lot of wires during this mod. I extended the wires to each of three above. I soldered in extensions. Maybe this added some resistance and caused the codes?
Could a Vacuum leak or wrong size Vac tube cause the 332?
What would cause the 172 besides a bad O2?
I had no codes before the Mod.
565 - Canister Purge Solenoid Circuit Fault
172 - O2 sensor, Lean
332 - Insufficient EGR Flow
I had to extend a lot of wires during this mod. I extended the wires to each of three above. I soldered in extensions. Maybe this added some resistance and caused the codes?
Could a Vacuum leak or wrong size Vac tube cause the 332?
What would cause the 172 besides a bad O2?
I had no codes before the Mod.
Lead Driver
Joined: Aug 2006
Posts: 5,670
Likes: 13
From: Sand Lake, MI
565 did you connect it?
The next two, yea a vac leak/problem could cause both of them.
How is the idle speed? A leak, a large one will cause the motor to idle higher then it should. A small leak can be enough to prevent the EGR valve from opening fully.
Yours is Mass Air Flow using a DPFE type system?
Only way to know on the wire extension, measure for sensors "in range" of specified but unless you added several feet of wire to em I doubt it being the problem. Unless of course you got a tad confused and crossed a circuit during the process.
The next two, yea a vac leak/problem could cause both of them.
How is the idle speed? A leak, a large one will cause the motor to idle higher then it should. A small leak can be enough to prevent the EGR valve from opening fully.
Yours is Mass Air Flow using a DPFE type system?
Only way to know on the wire extension, measure for sensors "in range" of specified but unless you added several feet of wire to em I doubt it being the problem. Unless of course you got a tad confused and crossed a circuit during the process.
Thread Starter
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Junior User
Joined: Oct 2009
Posts: 77
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From: Navarre
Yeah I connected the purge solenoid, but the retaining clip on the connector broke off so I connected it and taped around the connection so it wouldn't come apart. Maybe this could cause a bad connection.
The Idle doesnt seem to be high. I sprayed around the Vac connections with some carb cleaner, didn't notice anything though. Is there an easy way to check the vac system? Do I need to get a vac pump.
The Idle doesnt seem to be high. I sprayed around the Vac connections with some carb cleaner, didn't notice anything though. Is there an easy way to check the vac system? Do I need to get a vac pump.
