Question about 1991 Volkswagen Jetta
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Posted on Jan 02, 2017
DTC P0627 CHRYSLER - Fuel Pump Relay Control Circuit
ECM (Engine Control Module) detected an open or short in the fuel pump relay circuit
- Fuel pump circuit open or short
- Fuel pump circuit poor electrical connection
- Faulty fuel pump relay
- Faulty fuel pump control module (if applicable)
DTC P0680 - Cylinder 10 Glow Plug Circ, and,
DTC P0681 - Cylinder 11 Glow Plug Circ
The Engine Control Module (ECM) has detected a fault in the cylinder #10 or #11 glow plug circuit.
- Cylinder #10, or #11 glow plug circuit is open or shorted
- Faulty cylinder #10 or #11 glow plug
- Faulty glow plug module Help with this
DTC P0688 CHRYSLER - Auto Shutdown Relay Control Circuit Low
The Front Control Module (FCM) has detected the supply voltage below an acceptable value.
- ASD relay circuit is open or shorted
- Failed Auto Shutdown relay
- Failed ECM
Check all the ECM fuses, if the fuses are OK try replacing the ASD relay.
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Posted on Jul 03, 2012
SOURCE: Fueling problem on mk2 jetta cli
If your having trouble getting the fuel to go in,
it most like is the EVAP System & something
like a failed vent solenoid valve
You should have codes stored pointing in that
Posted on Sep 10, 2012
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