Fuel cutting out when i floor it in NA
My s4 6 port with t2 manifold that is ported so that the aux ports are always open started to fuel cut yesterday whenever i give it full throttle. I can rev it up but if i open the throttle alway the way i just get fuel cut. has ne1 had this happen or know wut it is?
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i dont have any ideas to help you out, but i think i may have a similar problem.
mine happens randomly, and kinda rarely- at half-WOT the engine will just fall on its face then come back hard. is that what it feels like when the fuel cuts? --mike |
It could be the ECU going into limp mode. Try pulling the error codes from the ECU.
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i figured it out when i was giving it full throttle the throttle body was pulling on the tps wire adn it would short it out. I fixed it and it hasnt' done it yet
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What exactly is limp mode? i've heard the term used a few times before, is it some kind of failsafe for overheating or something??
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Originally Posted by BlaCkPlaGUE
What exactly is limp mode? i've heard the term used a few times before, is it some kind of failsafe for overheating or something??
I'd guess maybe it starts inecting LOTS of gas, hoping that the unburnt gas will sort of lubricate the engine instead of it just running on no oil? And that in turn bogs the engine the more you try to rev, due to flooding. Total guess, someone that knows will post I'm sure. But I've also found out it is supposed to happen when the OMP is telling the ECU that it's dead. I don't think it happens for any other reason. And relating to THIS thread... that sounds like a TPS dead spot, like he said... if you don't have a wire binding at WOT like he did, then I'd take an analog ohmmeter and test the range of the TPS. There is a bunch of threads that cover that... I think one is in the archive. --Gary |
No limp mode on a series four, only series five.
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my 87 cuts fuel when at WOT in 4th gear
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Originally Posted by bunnybunny
my 87 cuts fuel when at WOT in 4th gear
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5k
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Originally Posted by bunnybunny
5k
If it's a non turbo.......the car is busted. IF it's a trubo, you might be hitting fuel cut. |
what do you mean "busted"? It only does that in fourth gear. if its in 5th it doesn't do that.
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