I dont have a guage on it (Yet) but the fuel pump burnt up... Was a new pump i dont know, but i got an aluminum fuel cell to go in the bed and gonna put an inline pump in.
I dont have a guage on it (Yet) but the fuel pump burnt up... Was a new pump i dont know, but i got an aluminum fuel cell to go in the bed and gonna put an inline pump in.
no but i changed the throttle body and it made a huge difference. now it just is kinda high at idle, but i think the idle air control valve is bad looks like it might of been bent some. Got to figure out how to hook up the OBD2 Port i believe the orange is the ign hot wire, there are two black weirs i guess there ground? matter where they ground to truck or battery? and the purple wire is the wire for the OBD2 wire coming out of the harness. I just cant get the OBD2 code reader to read anything. ign on and both black wires tied together and hooked to good ground.
OK got the OBD2 port hooked up and working right. The code it is showing comes up to PO1022. I changed the TPS didn't help. Truck Idles great. but if you try to get into it it still bogs. this engine and computer was DBW now I am using a DBC Throttle body and the computer has been tuned. the exhaust is down pipes and cats. stops right next to the transmission, could it be lack of back pressure or loss of when u throttle up fast?
Originally Posted by 87OldYeller
I just looked at my master OBD DTC list. It's a little old (2005), but it does not show that code. Here is what I find for DBC codes. Can you confirm the code? What model year is the engine, and more importantly, what model year is the "tune"? You might have a bad wire, which would explain why a TPS change didn't fix it.
Check for vacuum leaks, check to make sure your MAF is working right too. Open exhaust after the O2's won't cause that big of a stumble, but the PCM not knowing where the throttle angle is at can certainly cause it. Same with a bad MAF reading.
P1120Throttle Position (TP) Sensor 1 CircuitP1121Throttle Position (TP) Sensor Circuit Intermittent High VoltageP1122Throttle Position (TP) Sensor Circuit Intermittent Low Voltage
Mike
http://kds-performance.com
94 Silverado Z71 SCLB 4.8L LR4 Daily Driver
93 GMC Sierra 2WD LS V8 Swap dun, run, rusted, stripped & junked
1979 Caprice Coupe - LS Swapped - 11.76@115.8
Well I have gotton alot done. drove the truck some the other day runs great. One proble I did not have the TCC wire hooked up.. but now I am just looking for an inline pump that has been used on this engine that will support PSI needs.. will try to get up a video soon.
Aeromotive makes a nice inline pump. I believe Walbro makes an inline as well. You'll want to use a vette style regulator/filter.
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