alrite yesterday my CEL came on. I checked the codes which were
idle speed valve
knock sensor
automatic transmission computer signal to ECU

also when i drive my car i feel like im losing backpressure after about a half hours worth of driving. is that what the knock sensor does to the car when its messed up? i have 70k miles on my max and short ram intake. i also have a 99se trannyw/ tranny cooler thanx for any help

 

reset the ecu, and drive for a few days and check for codes again. the knock sensor maybe cracked thus making it non-functional. pull it out and ohm it.,

 

but my friends are telling me thats not the problem