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Studder When Boosting


trance42

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I cant figure out whats going on. When i drive normally i have no problem.

As soon as i go over 5-10 bs of boost i get this studder. The boost stays where it is.

I have 750 cc injectors and garett turbo. I am not tuned yet but i hav not had this problem yet. i have been driving The car since christmas.

I pulled codes. some i can find info for others i have no clue what they are.

335

543

455

454

542

231

453

452

214

I know what 335 231 and 214 are. the 231 is because im running rich. 335 manual swap. 214 possible bad rpm sensor

Does anyone know what theese other codes are?

I would apriciate any thoughts that anyone might have on this.

Tim

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spark plug is talked about in like 943832098432098432098 posts. some times its a pita to search because you have sort through all 439809809328 usless times sparkplug was typed.

Ill try all 53 pages of hits anyway..

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P0335 - Crankshaft Position Sensor A Circuit Malfunction

P0455 - Evaporative Emission Control System Tank Detected (gross leak)

P0454 - Evaporative Emission Control System Pressure Sensor Intermittent

P0231 - Fuel Pump Secondary Circuit Low

P0453 - Evaporative Emission Control System Pressure Sensor High Input

P0452 - Evaporative Emission Control System Pressure Sensor Low Input

P0214 - Cold Start Injector 2 Malfunction

542 and 543 come up as unknown codes

-Rob

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Thanks for the good info Rob.

The emissions is because of having a 97 motor in a 95 car.

It doesnt really worry me.

On the other hand these worry me.

-Crankshaft Position Sensor A Circuit Malfunction

-Fuel Pump Secondary Circuit Low

-Cold Start Injector 2 Malfunction

Any one else had these probems before?

No the injectors do not cause bad gas milage? they are saturated injectors so as long as im not flooring it im geting around 18-20 in the city. i did over 400 miles on one tank of gas on the interstate.

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bsr stage three ecu.

i went out and took the wire harness off injector 2 and put it back on.. no more studder. i guess it was a bad conection. problem solved for the moment. now to figure out whats causing the other codes.

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