1999 Chevrolet Suburban-K2500 3/4 Ton 4WD, 5.7L Engine Rebuild Project

Pictures below.

Problem: Hard to start.
Solution: Moved distributor forward one tooth then back two and found a position that allowed the engine to start and run though rough and died often.

Problem: Rough idle hard to rev up to 1500 to 2000 RPM.
Solution: Turned distributor until engine ran better.
Additional solution: Put air ducting back in place. The ECM is really dependant on the MAF sensor to set everything right.

Engine is running pretty good at this point.

Problem: DTC P1345, Camshaft To Crankshaft Position Correlation Fault. A dealer would normally use a Tech 2 scanner to repair but the following solution was much cheaper.
Solution: Bought my own scanner from Checker Auto, an INNOVA 3130 (see www.CanOBD2.com for info) on sale. In the following steps:

1. Turn the distributor to a reasonable position from where the engine would run to where it really had trouble then in the opposite direction I...
2. Turn the distributor oh so slightly.
3. Clear the DTC.
4. Turn everything off.
5. Wait for everything to stop.
6. Start the engine again and check the scanner.
7. If the distributor is still not lined up properly the P1345 will show up immediately. If it does then repeat from step 2.

Give it one more budge before signing off on it as it may not be quite spot on. I found that when this is off by more than 3 degrees you'll get the DTC. Once correct there will be a noticeable power boost. Even on this fresh rebuild.

Problem: DTC P0140, O2 Circuit No Activity Detected (Bank 1, Sensor 2).
Solution: Knew problem before hand but clearing P1345 allowed this code to show up. One of the connectors was melted somehow. For some reason unknown to me they O2 sensors must be replaced in pairs. (I've seen this in other electronic applications so I didn't bock at this.) Chevy dealer wanted $420 to replace them! Ordered online at www.OxygenSensor123.com (Email receipt came from "orders @ partsplusautostore . com" so perhaps is really www.PartsPlusAutoStore.com?) for $82.76 and saved over $335.00!

Problem: Minor coolant leak at intake manifold.
Solution: Redo the intake manifold intake gasket. I had some trouble with this so figured something might come of it but not as bad as expected. I've done this before in vehicle on a 96 Chevy C3500. Just a pain that's all.

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