Ok, on my way to work today my tranny started acting up. Shifting erratically. When i stop it pulls my truck down to about 500 rpm like the tc wants to lock up. If i give it gas it wont rev up at all if im stopped. When i let off the brake it lurches forward a bit like the tc is locked up and then the throttle will respond. Made it to work and i just hope i can make it home. I just replaced the speed sensor and governor things a couple of months ago when it wouldnt shift right. Dont think it matters, but i just replaced my transfer pump this weekend.

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Noone has ever seen this?

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Ok, so i went out at lunch time and it was still acting up. Went out a minute ago and it seems to be acting fine. I pulled the codes and got P0628, P0111, P2509, P0234, and P0628 {yes, it gave me this one twice.} I just pulled the codes last week and the only two in were the P0234{overboost} and P0628{fuel pump}. The other 0628 is new, as are the 0111 {air intake circuit problem} and 2509 {ECM, PCM loss of power}. Any idea why these codes would pop up or if they may be causing my problem?

 

P0628-LOW VOLTAGE DETECTED AT THE
FUEL LIFT PUMP

Possible Causes:

WIRING HARNESS
TIPM
FUEL LIFT PUMP CONTROL CIRCUIT SHORTED TO EXTERNAL VOLTAGE
FUEL LIFT PUMP CONTROL CIRCUIT OPEN
FUEL LIFT PUMP GROUND CIRCUIT OPEN
FUEL LIFT PUMP GROUND CIRCUIT SHORTED TO EXTERNAL VOLTAGE
ECM

 

Yeah, i replaced the lift pump last weekend and its running fine other than my new problem. I guess i need to take the battery cables off to reset that one, but what about the others?

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Oh, and its acting up again. It only acted right the one time, when i left work it started acting the same way again

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Ok, so i guess im gonna have to take it in if noone has an idea whats wrong with it. I guess when my truck breaks it does it good

 

Oooops, I didn't get all the code problems listed. Hold on!!!

 

P0111 = Intake Air Temp Performance, Intake Air Temp (IAT) Rationality, Intake Air Temp Rationality

(K21) IAT SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE
(K21) IAT SIGNAL CIRCUIT OPEN
(K900) SENSOR GROUND CIRCUIT OPEN
(K21) IAT SIGNAL CIRCUIT SHORTED TO GROUND
(K21) IAT SIGNAL CIRCUIT SHORTED TO THE (K900) SENSOR GROUND CIRCUIT
INTAKE AIR TEMPERATURE SENSOR
PCM
FAILED IAT SENSOR
INTERMITTENT CONDITION
RESISTANCE IN THE (K21) IAT SENSOR SIGNAL CIRCUIT
RESISTANCE IN THE (K900) SENSOR GROUND CIRCUIT
IAT SENSOR
PCM

 

P2509 = Powerdown Data Lost Error


POOR CONNECTIONS AT THE BATTERIES
LOW BATTERY VOLTAGE
OPEN FUSED B+ TO ECM
OPEN GROUND CIRCUIT
BATTERY + SHORTED TO OTHER CIRCUITS
RETURN CIRCUIT SHORTED
BATTERY + SHORTED TO GROUND
INTERMITTENT CONDITION

 

P0234 = Turbocharger Over Boost Condition

OTHER DTC’S
WASTEGATE STUCK
TURBOCHARGER AND/OR WASTEGATE DAMAGE
WASTEGATE
TURBOCHARGER
WASTEGATE CONTROL VALVE

 

Can do a little checking around for the P2509. But the others, probably going to have to schedule an appointment for the dealer.

 

Cool. Thanks for the help. Now that i think about it, when i took off the battery cable to do the fuel pump i had to pry it open a bit to get it off and it cracked. I tightened it and it seemed pretty good but it may not be tight enough

 

Might help to clean all the terminals and ground points??