I have a 90 mighty max manual trans and I believe I'm having trouble with the tps sensor. It's surging when idle to the point of stalling, it's jerking when it gets up to 50 mph and it takes a couple seconds to accelerate out of 1st. Also there as been times where I had to gas it to get the engine to turn. I know I need to test the tps first but I'm not really sure where it is or what my specific model looks like. Thx in advance.