Sputtering over half throttle?
#1
Sputtering over half throttle?
Hello ive been chasing this issue for a while and I can’t seem to figure out what’s wrong. Car drove perfectly fine until one night it started to sputter over half throttle. I have a turbo 1.6 with megasquirt, dw200 Fuel pump, K tuned AFPR, 850cc injectors, bmw VTPS. Running e85. Fuel pressure is set at 50psi, car idles and cruises fine but when I give it 50% throttle or more it sputters at 4200rpm. I can reach 6000rpm just fine as long as I’m not over half throttle. When it sputters it goes rich and timing drops lower. Could the tps be going out? It reads 0%-100% fine but when I go to calibrate tps the blue bar shows When I’m not on the throttle(pic attached)
#2
Check your grounds. I had the EXACT same symptoms on my '97. It ended up being a loose battery terminal. Seems like your spark plugs aren't generating spark when the cylinders are consuming more air and fuel.
I'm not familiar with TPS sensor calibration so ignore if you're certain that's the problem.
I'm not familiar with TPS sensor calibration so ignore if you're certain that's the problem.
#3
Check your grounds. I had the EXACT same symptoms on my '97. It ended up being a loose battery terminal. Seems like your spark plugs aren't generating spark when the cylinders are consuming more air and fuel.
I'm not familiar with TPS sensor calibration so ignore if you're certain that's the problem.
I'm not familiar with TPS sensor calibration so ignore if you're certain that's the problem.
#5
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