98 K1500 P1345

[oneluckypops]

Ok need alittle help here please. I just rewired this truck because of an engine fire (totally burned everything under the hood). The customer had the engine rebuilt from a very respectable machine shop. After I got all the wiring hooked up I started the engine to hear a knock, (no biggie the customer used pressure plate bolts for the torque converter) I fixed that for him. I then started the engine again and it ran absolutly Beautiful for about 20 minutes, then the mil came on and it spit and sputtered then died. I would not restart. The next day when it cooled off it did the same thing. The customer has replaced the Crank sensor, ICM, and the coil. I have checked the distributor for correct installation which apears to be right (#1 TDC of compression stroke Rotor points towards the pointer casted in to the distributor housing with the #8 embedded in it).

BTW the Cam ****** was at 0 when I first started it. After i checked to make sure the distributor was installed properly, I started it and cam ****** was at -27 which should be 0 +/- 2 deg. which is what is making me think that either the hall effect sensor is bad or the balancer slipped, which would be a good reason for the P1345.

Now the only thing I can come up with is it is either a faulty (used junk yard Distributor), Faulty PCM, Or possably the harmonic balancer has slipped.

Does anyone have a diagram of the balancer so that I can see the relationship of the TDC mark compared to the keyway?

 

[oneluckypops]

Holy shit Cam Ret ard is sensored?

 

[OldCracker29]

Did he also replace the cam sensor? My '99 died on me when the sensor failed.

 

[oneluckypops]

Did he also replace the cam sensor? My '99 died on me when the sensor failed.

that is the distributor.

 

[Draenor]

Did he also replace the cam sensor? My '99 died on me when the sensor failed.

that is the distributor.

Nope there is a sensor.

 

[oneluckypops]

Did he also replace the cam sensor? My '99 died on me when the sensor failed.

that is the distributor.

Nope there is a sensor.

The cam sensor is a Hall effect switch Located inside the Distributor.

 

[Draenor]

Doh..speed reading FTL....


To me the dizzy wasn't stabbed correctly. Some destructions I use below.
See if this helps.

Rotate the number 1 cylinder to Top Dead Center (TDC) of the compression stroke. The engine front cover has 2 alignment tabs and the crankshaft balancer has 2 alignment marks (spaced 90° apart) which are used for positioning number 1 piston at Top Dead Center (TDC) . With the piston on the compression stroke and at top dead center, the crankshaft balancer alignment mark (1) must align with the engine front cover tab (2) and the crankshaft balancer alignment mark (4) must align with the engine front cover tab (3).

1. Rotate the crankshaft balancer clockwise until the alignment marks on the crankshaft balancer are aligned with the tabs on the engine front cover and the number 1 piston is at top dead center of the compression stroke.

1. Align white paint mark on the bottom stem of the distributor, and the pre-drilled indent hole in the bottom of the gear (3). NOTE: The OBD II ignition system distributor driven gear and rotor may be installed in multiple positions. In order to avoid mistakes, mark the distributor on the following components in order to ensure the same mounting position upon reassembly:
   • The distributor driven gear
   • The distributor shaft
   • The rotor holes

Installing the driven gear 180 degrees out of alignment, or locating the rotor in the wrong holes, will cause a no-start condition. Premature engine wear or damage may result.

1. With the gear in this position, the rotor segment should be positioned as shown for a V6 engine (1) or V8 engine (2).
   • The alignment will not be exact.
   • If the driven gear is installed incorrectly, the dimple will be approximately 180 degrees opposite of the rotor segment when the gear is installed in the distributor.
2. Using a long screw driver, align the oil pump drive shaft to the drive tab of the distributor.

1. Guide the distributor into the engine. Ensure that the spark plug towers are perpendicular to the centerline of the engine.

1. Once the distributor is fully seated, the rotor segment should be aligned with the pointer cast into the distributor base.
   • This pointer may have a 6 cast into it, indicating that the distributor is to be used on a 6 cylinder engine or a 8 cast into it, indicating that the distributor is to be used on a 8 cylinder engine.
   • If the rotor segment does not come within a few degrees of the pointer, the gear mesh between the distributor and the camshaft may be off a tooth or more.
   • If this is the case, repeat the procedure again in order to achieve proper alignment.

1. Install the distributor mounting clamp bolt. Tighten the distributor clamp bolt to 25 N.m (18 lb ft).
2. Install the distributor cap.
3. Install two NEW distributor cap screws. Tighten the screws to 2.4 N.m (21 lb in) .
4. Install the electrical connector to the distributor.
5. Install the spark plug wires to the distributor cap.
6. Install the ignition coil wire. The wire must not touch anything like the dip stick. Rubbing will make a ground/short after time of use.
7. For V-8 engines, connect a scan tool.
8. Monitor the Camshaft ****** Offset value. Refer to Computers and Control Systems Camshaft ****** Offset Adjustment. IMPORTANT: If the Malfunction Indicator lamp is turned on after installing the distributor, and a DTC P1345 is found, the distributor has been installed incorrectly.
9. Refer to Installation Procedure 2 for proper distributor installation.

 

[oneluckypops]

Ok that just confused the hell out of me. I assume those instructions are for a 6 Cylinder? Perhaps I should give you alittle update from today.

I stuck a NEW Remanufactured Distributor in. I was able to get the 1345 code to go away, I also got the timing set at 0- minus 1 Deg. Its with in specs BUT now its throwing a 341b code. which is a cam sensor code. The hall effect swirch was replaced with the distributor.

I can start the truck and it will run great for awhile then it starts surging and finally dies. If I let it sit for a few minutes it will start back up and run great again for a few minutes then same thing happens.

 

[Draenor]

V8, the 4.3 use the same guidelines.



Anyhoos... Make sure there ar no shorts in the wiring, since you previously mentioned there was a fire involved.

 

[oneluckypops]

V8, the 4.3 use the same guidelines.



Anyhoos... Make sure there ar no shorts in the wiring, since you previously mentioned there was a fire involved.

Not saying it isnt possable but its all new wiring now.