hey. the SES light came on and it read a code 44. The car would jump when I am driving down the road. Even you can tell by looking at the RPMs. I have replaced the IAC valve and the oxygen sensor.what else could it be.

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Chevy Camaro RS 1990
TBI all stock automatic tranny 305 5.0L

 

So basically your driving down the street, the car surges because the rpms are fluctuating, right?

Does it always do this, only at certain times, around a certain rpm level, or speed?

Will the rpms fluctuate at idle? I little more info would be helpful. What size engine and fuel system do you have? My car used to do something similar so I may be able to help you. ~Arnold

 

it is a 305 TBI no it happen at anny speed and even in idle.

 

it is a 305 TBI no it happen at anny speed and even in idle.

 

Well I don't know a whole lot bout tbi but I will try and help. I would check for lose connections first. Then you may want to check your tps. Then the last thing that I can think of is a maf sensor. Besides all that I have no idea what the problem is. I would use voltmeter and check the sensors so that you don't have to buy new ones, maybe save some money.

 

thanks i will try that but what will make it give off a code 44