Mechanics

CHEVY 2 CODES - P1345=P1351

1997 Chevrolet Silverado

Engine Performance problem
1997 Chevy Silverado V8 Two Wheel Drive Automatic 96,000 miles

1997 Chevy Silverado V8 Automatic 96,000 miles
UPDATE: 2 codes P1345--- P1351
Had a friend with a hand held computer to check out engine, it read that multiple miss fire, ( 6-5-7 ) everything from fuel filter forward was replaced,
filter, plugs, wiring, coil, distributor, Idle Air Control Valve, and some other things, can't recall at this time.
I broke the plastic housing on the temp sensor but stuck it back together, temp reads fine on gauge inside.
Does anyone or can anyone guide me to what to check next.
all cycl. Check out at 180 lbs.
fuel pressure
62 lbs
when I drop down to low and hold at a steady speed It misses, back fires terrible, in overdrive its not too bad but holding at a steady you can feel it missing,
when I put it to the floor it runs great,
put fuel tester on it drove it down the road, it never droped any at all.
Had a machanic with computer and driving had no misfire on acceleration .
Avatar
Unclerosey
November 3, 2008.




If it has a plastic intake check for a vaccum leak on the cylinder you were talking about. Most likely thats the problem, You need a intake gasket

Tiny
Rhall77
Nov 3, 2008.


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