Jemo

Today was the first day to get everything squared away and start the engine. Took a few tries and graduated to a stumbling idle, then die and then ran with no problems and started almost instantly. I'd imagine the injectors might have been a little clogged or just from the motor sitting for 3 years.

I haven't done the Idle Learn yet because the shifter isn't installed but will tomorrow. I had the ECU programmed by a well known vendor but did get 3 codes:

[PCM] P0443 - EVAP Purge Solenoid Valve 1 Control CKT
[PCM] P0449 - Evaporative Emission (EVAP) Vent Solenoid Control Circuit
[PCM] P0452 - Fuel Tank Pressure Sensor Circuit Low Voltage

It runs good and idles fine until you give it any throttle then it wants to die but I think that's because it has learned how to idle yet. Are these 3 codes things that should've been programmed out or do I have a potential problem?

Thanks,
Jeff

Rick Speed

iTrader: (55)

They should have been programmed out.

Jemo

Thanks. Yeah, I don't have a charcoal canister or any of that on this car. The car originally vented the tank out the filler neck through the gas cap so I'm using that again but with 50 year newer technology. Fuel tank pressure sensor either. Maybe it's because I only added 4 gallons for the first start.

Rick Speed

iTrader: (55)

how's your fuel tank set up? return? sump? fuel rail?

Jemo

It's a stock tank but has an internal pump from Tanks, Inc. I can't remember the specs but it's for high powered cars and the guy said it would work fine with a LS1. PA-4 I think was the model.

I'm using a Corvette FPR and a LS6 manifold and fuel rails. 3/8 supply and 5/16 return.

Rick Speed

iTrader: (55)

Do you have a scanner? Check map sensor and Maf .... more then likely is a bad reading or fuel pressure issue?