Driveability for the experienced., Diag codes 35, 42. Options

[ScottDavid]

Hello Toyota enthusiasts.

Well Long story short Im obviously new here. Not to working on cars....New to Toyota though.

I swapped a 93 jap spec 3sgte into a 96 gt celica. Runs great but after a la hot of test driving and quality checking I had only two diag codes.

35 - Turbo Charging pressure sensor signal
42 - Vehicle speed sensor signal.

As far as the T/C pres sensor. I have a steady 4.98v reference while idling, cruising and boosting.
I have a varying signal voltage with is .1682v @ light throttle which will increase with load to WOT @ 4.97v
The ground circuit is always grounded.

Now, as far as driveability, I noticed that while the engine is normal operating temp its boosting fin, 7-10 psi.
Great performance!

After the engine is fully warm....I was WOT and felt a slight loss of acceleration along with a slight drop in boost. And after the check engine light. max boost 6-7 psi.

Now, The wiring is all cherry, because I did it. My continuity checks are fine from sensor to ecm.

Ok, so the stock 3sgte jap spec vehicle has a turbo gauge built into the cluster....I dont have the stock cluster, I have an aftermarket gauge.

As far as code 42.....Have not tested yet.

Has anyone had this issue or has info on my driveability issue? I will appreciate it.

-Scott

[ScottDavid]

I dont now if I am complimented or insulted. Non the less, if I remove operating vacuum I loose all funcitonality of the sensor. That doesnt make any logic sense. It just doesnt.

Yes the speedo is working fine. Although cruise capability is no longer available. Non the less not necessary.

I could make an appearance at a meet. Ill roll up in the E34 though.


Thanks for the response all..

-Scott