I'm stumped,

P2135 - TPS Sensor Voltage Correlation
P0315 - Crankshaft position sensor
P2101 - Throttle actuator position
P2119 - Throttle actuator control

What happen is, I'll turn the car on, it turn over for a moment and then dies.
Limp Mode/Engine disabled on the DIC.


Video -

I've replaced the fuel filter, checked the fuel pump, appear to get spark, cleaned the MAF.
I've attempted to makke sure the TPS is connected securely, same with the crankshaft sensor.

It turns over, then something causes the car to turn off the injectors causing it to die.
Any and all help is appreciated


relevant mods for reference
injen intake
TVS
60# injectors
zzp tune
exhaust

 

Try to start it, it will die, leave the key in the on position..... what is the security light doing?

&& what's with all the TAC codes?

 

The lights on the dash are all the lights that normally turn on when the key goes in the ignition.

 

security light turns off

 

I'd be looking at the TAC codes

 

Three of the codes point to an isssue with the throttle body.. Might be replacing that next

 

Good idea.


P2101 CAN keep the engine from running.

 

Yeah might be that tb since the tps is one piece with the tb

 

I say TB. Car spark's just fine, when it's running but dies. I fiddled with my throttle body and I got eng power reduced and had a weird lopey cam skipping idle. Erased code twice, my upper ic pipe was loose too due to no clamp cause it siezed up and it was fixed just by clearing codes and tapping on the throttlebody.


Did you do anything to move the throttle body at all?

 

No,
It was a gradual problem over a couple days that escalated quite fast. Maybe something in the sensor when i hit a bump.. Not sure.
Troubleshooting the problem, I wiped it down when I pulled the intake off, moved the throttle body to make sure it wasn't seized..
Now i'm trying to find a tb at the right price..

It sucks not really knowing for sure the problem.
Makes me want to sell it. .

 

You have the stock throttlebody on your car? I have one for you.

 

Yeah, stock one is on.
PM'd

 

Update,
Put the working throttle body on. Codes are now gone but when i turn it on, it is still struggling to stay on and then dies.
Only remaining code is for the crank relearn.
I can kind of rev it now and get into the rhythm so it stays on but as soon as I stop the car idles for a moment very rough and then dies again.

The car runs extremely lean and it's like the car is starving for fuel.


Any ideas anyone?

 

ever replaced the fuel filter?

 

That was the first thing to be replaced when I started troubleshooting

 

You can rent a fuel pressure test kit from an auto parts store. Compression testing wouldnt hurt it either.

Sure theres no more codes?

 

Positive, I have an interceptor and can read the codes anytime. No CEL, just the crank relearn. I'm gonna try to test the fuel pressure tonight.

I dread replacing the fuel pump

 

Its really not that bad as long as the tank is fairly empty.

 

I'm sure there is a how to somewhere. I'm not confident that it is the fuel pump causing problems now

 

Since its running lean maybe there is an issue with the maf? Try unplugging that and see if it starts?

 

Thanks, will try that tonight and report back.
It's also possible i may have inserted the fuel pump fuse back in incorrectly, found another thread with a similar issue..
Has to wait until work is over though.

 

Unplugged the maf and it runs BEAUTIFULlY!! Looks like a need a new maf?

 

could need a new maf. could try cleaning it too. check for any intake leaks

 

If you decide to clean the MAF sensor pick up CRC MAF sensor cleaner.

 

I use brake parts cleaner to clean mine