I have a 94 s10 with a tbi 383, ive picking all of your brains alittle lately over this thing and Im finally starting to get it ironed out. Fixed the ESC code 43, turns out all i needed was alittle dielectric grease between the esc module and dist., Also found out that my injectors flowed 80lb/hr at 30 psi, not 13psi so i replaced them with some older 454 injectors....

now ive got one more hiccup to fix, a code 34. I have the map sensor connected to the bottom port in the front of the TBI, could this be tripping the code? Also, i have the vacuum canister for the fuel tank hooked to the same port in the back of the manifold that my brake booster is on, dont think that would cause a leak but maybe it would? Finally, the cam is a mild street cam with a slightly lopey idle, is there any way i can change the map code perimeters so that the computer will accept a lower voltage without tripping the code? Im using the factory 16197427 computer and tuning it using 0D.xdf and TunerPro.

Thanks in advance for your help

 

Should use the rear port between the fuel fittings for the MAP. The one up front may be ported vacuum.

Code 34 is a MAP low, which is strange. It may be that the TPS is bad, which is used in testing the MAP sensor. Ot that the +5V reference to the MAP/TPS sensors is low.

RBob.