timing problems code P01345

[hidroela]

This apply to a 350 Chevy vortec engine 5.7 liters (97 Tahoe)
I scan the vehicle using a home made scan tool and the results are

Ignition timing advance for #1 cylinder =24 degree

My question is the value of the ignition timing advance for #1 cylinder is correct?
If not What should be the approximate range? and How to correct

If the correction have to be done following the bellow procedure

Bring cylinder number one piston to Top Dead Center (TDC) of compression stroke.
Remove the distributor cap bolts
Remove the distributor cap.
Install a NEW distributor gasket onto the distributor.
Align the indent hole on the driven gear with the paint mark on the distributor housing.
Ensure that the distributor rotor segment points to the cap hold area.
Align the slotted tang in the oil pump driveshaft with the distributor driveshaft. Rotate the oil pump driveshaft with a screwdriver if necessary.
Align the flat (1) in the distributor housing toward the front of the engine.
Install the distributor and distributor clamp.
Once the distributor is fully seated, align the distributor rotor segment with the number 8 pointer that is cast into the distributor base.
If the distributor rotor segment does not come within a few degrees of the number 8 pointer, the gear mesh between the distributor and camshaft may be off a tooth or more. Repeat the procedure in order to achieve proper alignment.

Please what is the meaning of the following terms?
-indent hole on the driven gear
- paint mark in my engine disappear (there is not one)
- cap hold area
- flat (1) in the distributor housing
any help would be appreciated thanks

another question is there a way to post pictures

[Jeremy-WI]

First, see if your scantool will bring up a value for camshaft offset or cam retard( it should be 0 degrees +/-2 degrees). If the value is +/-16 degrees you may not have to pull distributor. Loosen distributor hold down bolt, start motor, rev motor over 1500 rpms so pcm and scantool will have correct value for cam retard. If the cam retard is negative turn the distributor counterclockwise and if its positive turn it clockwise and rev motor over 1500 rpms to update the change. Now if you cannot attain +/- 2 degrees by turning distributor.

On to other questions, with the distributor assembly removed from engine you should be able to see a white line on the distributor shaft housing above the gear and on one side of the gear(above or below the roll pin hole) will be the indent you need to align with the white line on the shaft housing. I think cap hold area may be a mispelling, what it means is that the rotor should be pointing over a drain hole in the distributor -with distributor gear indent aligned with the white line on the shaft housing). Flat in the distributor housing- about 75% of the distributor housing and distributor cap is round with one section about 2 inches or so is flat, you really want to insert the distributor into the engine so that the spark towers(where the plug wires plug into the distributor cap) are perpendicular to the engine- if the flat spot on the distributor isn't right you probably won't get it in far- not in any farther than the upper intake manifold. You can post links to pictures
http://www.mhtc.net/~jbomkamp/dist2.gif is the alignment between line on shaft and indent on gear

http://www.mhtc.net/~jbomkamp/distributor.gif is how the rotor should be pointing after its installed in the engine

[hidroela]

well i found this link that explain the procedure like you did Jeremy
thanks any way for you help


http://forums.vmag.com/suvsuburban-0...ages/3074.html

[skipr]

code P1345 is crankshaft position sensor to camshaft position sensor correlation problem. Did this code just pop up one day or was it after you did a dist removal? A camshaft position sensor will not be noticable drivability problem but a code will light up. A crankshaft postion sensor going out will be very noticable problem (like crank but no start, or very harsh cranking sound like the flexplate is being chewed up.