I have an 89TII and have been experiencing some problems with hesitation. The TPS has been set, and all vaccum lines have been replaced and ground straps installed. However the hesitation under accel remains.

I had the injectors cleaned, and also replaced the ECU, no changes. So recently I decided to see if the injector pulse was fluctuating during accel. by attaching LED's to the injector 12V line from the ECU. I have one LED from each injector wire for a total of for. To my delight, the LED's never cut out or anything during the acceleration however something really odd happens. When ever I open the door to the car, all of the LED's light up solidly bright instead of blipping on and off with injector pulses.

Does any one know if there is any co-relation between these circuits? I have powered seatbelts that sometimes work and sometimes don't if that makes any difference.

Thanks,

Anochie

 

Try looking into ignition

 

Where are you experiencing hesitation?

 

at any point when I accelerate... any rpm.