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Discussion Starter · #1 ·
First off, just sold my '78 C10 thumpin a 383, and purchased a 1995 K1500 5.7 since I needed something for the bad weather. So new to the forum, and Hello!! But I got a head scratcher for y'all TBI guys.

I bought the Chevy K1500 with a locked up motor and 320K on the body (but in remarkably good shape) for a good price and swapped in a 350 from a 1992 G20 Van. Before the swap I slid in a Summit 1102 "RV Cam", a supposed computer/head compatible cam, and new lifters, replaced the troublesome gaskets/seals and replaced some components due to either missing, for insurance or discovered to be bad:

•Alternator
•Waterpump
•Double roller
•high flow oil pump
•power steering pump
•radiator
•TBI Rebuild

After proper break in of the cam, I set the timing to 0° with the tan wire unplugged, plugged back in, cleared codes. Idles great, take her for a ride; grandma'ing the pedal she accelerates through all the gears fine but as soon as you get the least bit into her she stumbles, misses, and has no power, get out, back to normal. Only threw Code 43 for knock sensor on the test ride....long story short, the van uses the high resistance 100K sensor while the truck runs the 5K, bought correct one. Code gone.

Still stumbles.....Kept my foot in the pedal on the next test drive to see if it would pull through it, but never did and then threw a Code 44, O2 sensor Lean. Thought, must be fuel pressure dropping right?!? Hooked up inline gauge and ran it out the hood as I cranked up and drove normal then laid into it to get to stumble.....Fuel pressure remained steady at 11 psi. It will only throw the lean code if you make it stumble for a long period, driving soft has no codes.

I can see the gas spraying from the injectors with a very nice spray pattern so starting to run out of ideas.

Any Thoughts? Thanks!!!
 

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Discussion Starter · #2 ·
Bad ground at the water neck!! Fixed.
 
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