p1345 ckp/cmp correlation. Basically the timing is off...you can't time this motor the conventional way, you will need to find someone with a scan tool that reads camshaft position offset...the spec is 0 at 1200 prm.
P0441 EVAP emission canister purge is contolled by a valve which allows engine vacuum to pull stored fuel vapors from fuel tank into the engine to be burned, rather than be vented to atmosphere. A vacuum switch is used to detect when flow exists. If the PCM commands purge and sees that the switch is closed (indicating no detected purge flow) P0441 is set.
P1406 code, try this before you pay a shop to fix it.
Remove your EGR valve and soak it in about an inch of good carbon cleaner. Dont submerge the whole thing, just the bottom part where the valve seats. Leave it overnight and clean it really good the next day with a pick and a brush. (a small screwdriver and an old toothbrush work just fine.)
Push open the valve and carfully clean any carbon built up around the valve and seat. The valve should move freely and NOT stick in the closed position. When the valve is dry, reinstall the EGR valve and clear the codes. P1406 EGR Pintle Postion Circuit
Thank you for using Fixya, you can work on the P0441 and P1406. The P1345, your going to need a scanner to set the timing.
The ignition timing cannot be adjusted. The distributor may need adjusting to prevent crossfire. To insure proper alignment of the distributor, perform the following:
With the ignition OFF, install a scan tool to the DLC.
Start the engine and bring to normal operating temperature. IMPORTANT: Cam ****** Offset reading will not be accurate below 1000 RPM.
Increase engine speed to 1000 RPM.
Monitor the Cam ****** Offset.
If the Cam ****** indicates a value of 0°+/-2°, the distributor is properly adjusted.
If the Cam ****** does not indicate 0°+/-2°, the distributor must be adjusted.
With the engine OFF, slightly loosen the distributor hold down bolt. IMPORTANT: Cam ****** Offset reading will not be accurate below 1000 RPM.
Start the engine and raise engine speed to 1000 RPM.
Using a scan tool monitor Cam ****** Offset.
Rotate the distributor as follows:
4.1. To compensate for a negative reading, rotate the distributor in the counterclockwise direction.
4.2. To compensate for a positive reading, rotate the distributor in the clockwise direction.
Repeat step 4 until 0°+/-2°, is obtained.
Turn the ignition OFF.
Tighten the distributor hold-down bolt to 3 Nm (25 lb. ft.).
Start the engine, raise engine speed to 1000 RPM and recheck Camshaft ****** Offset.
Mar 31, 2010 |
1996 GMC Yukon