Car revs to 4K and holds RPM -FBM

[wparsons]

Originally Posted by Kerber23

I was able to log the both with the car in the accessory position. The accel went from o-100 and I heard the throttle body opening as wel.

It doesn't sound like a sensor issue on the pedal then. Getting stranger and stranger.

[Kerber23]

Originally Posted by Kiske

As stupid as it seems wipe the codes and battery reset the ecu. That should fix your 4k issue. And likly what your seeing with the tps. I'd start with the map. Sadly, when I had issues with mine, LJ could only sell me another one to see if that fixed the issue. Fbm map sensors are just restickered omni 3/4 bar sensors should you noy want to spend 90$.

There are some boosted boys around here. Ill see if I can borrow one of the sensors before I start dropping bills for "potential" fixes. That would start adding up fast if they didnt work lol. Thanks for the tip!

[NoHaveMSG]

Have you checked for this boost leak?

http://www.ft86club.com/forums/showthread.php?t=109444

[Kerber23]

Originally Posted by NoHaveMSG

Have you checked for this boost leak?

http://www.ft86club.com/forums/showthread.php?t=109444

At first when I thought it was a boost leak I was thinking that, the guy I got the engine from says he already clamped that hose down (he was boosted, now is doing an LS swap). But it just seems odd that a leak would stop all throttle response. The logs show the throttle angle not corresponding to the accelerator angle. Even flooring the accelerator during that portion didn't cause a bump in accelerator angle

[NoHaveMSG]

Originally Posted by Kerber23

At first when I thought it was a boost leak I was thinking that, the guy I got the engine from says he already clamped that hose down (he was boosted, now is doing an LS swap). But it just seems odd that a leak would stop all throttle response. The logs show the throttle angle not corresponding to the accelerator angle. Even flooring the accelerator during that portion didn't cause a bump in accelerator angle

I figured, just thought I would throw that out there. I thought I read in a previous post that the ECU was logging 0-100% throttle and you could hear the TB opening. If the throttle angle does not correspond to the accelerator angle it sounds like the TPS is out of range.

[Kerber23]

Well I just pulled out the gas pedal, reset the codes and it instantly started doing the idle really high and ignore throttle response. Normally after I clear DTCs I can get the car to idle. I have someone coming over who will let me try his gas pedal. see if that solves things.

[Kerber23]

https://imgur.com/a/WoKLKO0
https://imgur.com/a/wlDKpgc

So I took the intake manifold off, and the notorious boost leak area was a non-issue. The only odd thing I noticed was one of the manifold gaskets. Do you think that this could be causing my problems? I doubt it. I was jiggling the wires going to the MAP Sensor and it was causing stuttering. I ended up buying another MAP sensor and we will see if that fixes it. If not Ill try and sell it.

[soundman98]

Originally Posted by Kerber23

I was jiggling the wires going to the MAP Sensor and it was causing stuttering. I ended up buying another MAP sensor and we will see if that fixes it. If not Ill try and sell it.

starting to sound like it's an issue with the vehicle-side MAP wire connector. my diagnosis would start there. check for distorted/bent/corroded pins, tug the wires for a oem-poorly crimped wire as well.

[wparsons]

Originally Posted by Kerber23

https://imgur.com/a/WoKLKO0
https://imgur.com/a/wlDKpgc

So I took the intake manifold off, and the notorious boost leak area was a non-issue. The only odd thing I noticed was one of the manifold gaskets. Do you think that this could be causing my problems? I doubt it. I was jiggling the wires going to the MAP Sensor and it was causing stuttering. I ended up buying another MAP sensor and we will see if that fixes it. If not Ill try and sell it.

Did you get anywhere with this?

[jacob.hawk.fcp]

Originally Posted by wparsons

Did you get anywhere with this?

Yeah I have the same issues. Mines holding at 2k. After 5 mins mine will start bouncing rpm. Replaced the pedal and the throttle. No change. Any word on the sensor?