i've been having too many problems as of late with my 91 t2. well, the new problem is poor acceleration. When I try to accelerate with half to wot the car just totally lacks power. rpms are very slow. It will bog sometimes to before it tries to accelerate. The car will idle around 500-600 rpm and the BAC screw does not affect the idle speed at this point. I did a compression test and I still get 105 psi both rotors. I checked the fuel injectors for resistance and they within spec. The fuel pump also operates. With these problems, I have come to a conclusion that it is running lean? I have yet to check the ECU and MAF. Any suggesstions will help.

 

I did a few tests today. The ECU tested out good. The water thermosensor good. TPS is good. MAF sensor is good. Btw, I get no MIL codes. Any help will be truly appreciated. I really need to get my car back on the road.

 

Does the check engine light at least illuminte when you turn the key forward? I have seen many cars that the bulb has been removed by PO to hide an issue.

Another idea, check your double throttle, if they are not opening this will block the air from going to your secondary intake ports.

 

i haven't checked the double throttle intake ports. I can however rev the car in neutral to redline no problem. So I am assuming it works. The check engine light does work when the car is on and I got codes when the OMP went out. So its working.