I replaced engine with 5.3 from 2003 Tahoe donner. (Never done this before. All by myself, alone, with helps from YouTube).
Engine started right up. Take for test drive- feel like transmission shifting not normal and engine stalls after 5 min driving. Shut it off, engine will start and Avalanche will muves after 5-10 minutes.
I replaced transmission (from the donnor). The same symptoms. Drove to my mechanick. Mechanic's scan shown MAF cod and multiple misfire. I clean MAF. Replaced all 02 sensors with correct from Denso, ACdelco spark plugs, Amazon wires. Fuel injector connectors was damaged (broken clip). I soldar new injector' pigtails.
Fuel pressure is 58 psi on the fuel rails.
I have ELM code reader. O2 sensors on both banks (upstream and downstream) acting normal. Short term fuel correction is looks normal.
I sprayed water on top intake manifold (around the gasket, injectors, vacuum ports) , sprayed propane from the toach bottle. I see no noticeable changes in idle.
I clean codes. Started engine. No cods. Revved engine to 2000 rpm, CEL start flashing. CEL stop flashing after release the gas.
Code: P0300. Nothing als.
My next steps:
1. Replace Crank position sensor.
2. Smoke test of air intake (I should to do this first, I don't have smoke machine).
Any recommendations will be appreciated.
Engine started right up. Take for test drive- feel like transmission shifting not normal and engine stalls after 5 min driving. Shut it off, engine will start and Avalanche will muves after 5-10 minutes.
I replaced transmission (from the donnor). The same symptoms. Drove to my mechanick. Mechanic's scan shown MAF cod and multiple misfire. I clean MAF. Replaced all 02 sensors with correct from Denso, ACdelco spark plugs, Amazon wires. Fuel injector connectors was damaged (broken clip). I soldar new injector' pigtails.
Fuel pressure is 58 psi on the fuel rails.
I have ELM code reader. O2 sensors on both banks (upstream and downstream) acting normal. Short term fuel correction is looks normal.
I sprayed water on top intake manifold (around the gasket, injectors, vacuum ports) , sprayed propane from the toach bottle. I see no noticeable changes in idle.
I clean codes. Started engine. No cods. Revved engine to 2000 rpm, CEL start flashing. CEL stop flashing after release the gas.
Code: P0300. Nothing als.
My next steps:
1. Replace Crank position sensor.
2. Smoke test of air intake (I should to do this first, I don't have smoke machine).
Any recommendations will be appreciated.
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