I have an 87' 325is 5speed and when it hits up to 5k RPM the car seems to cut the gas off and throws me forward. It doesn't kill the engine, just goes back to normal after the cut off point. Anybody know what this could be or the cause? Thanks
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Cut off at 5k RPM?
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Sure you have an '87 325"is" and not a '87 325"es" ?Need a part? PM me.
Get your Bass on. Luke's r3v Boxes are here: http://www.r3vlimited.com/board/showthread.php?t=198123
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Does it cut under full throttle?M3 springs w/bilstein hd's, IE 22/19mm sway bars, front IE stress bar, complete suspension rebuild, IS interior.
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7,000 rpm on any "i" engine including iX cars. Are either of you chipped?Need a part? PM me.
Get your Bass on. Luke's r3v Boxes are here: http://www.r3vlimited.com/board/showthread.php?t=198123
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Originally posted by EN318isPDX View PostFuel pressure?
I would say a faulty FPR. Even a fuel filter issue possibly.Need a part? PM me.
Get your Bass on. Luke's r3v Boxes are here: http://www.r3vlimited.com/board/showthread.php?t=198123
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Random old thread bump. When searching for "M20 cut off at high RPM", I found this thread. Looks like the OP was having an issue with the car long ago, but long story short, my brother now owns this car. Still having the same issue, six years later.
This car has some sort of chip with a 173 DME that someone swapped in along the way. This is a hard cut off. It will not rev past 4500 RPM at full throttle under any type of load. Under partial throttle, you can get it to redline, but that's it. It's not a fuel related cut off, it's electrical...the car bucks and stalls and the instrument cluster gets super fucky until you clutch in and let the revs fall back down under 3000.
I swapped in a 380 DME from a known good running 325i, still the same issue. I connected my Snap On Modis and got the following codes:
Idle Actuator ZWD Winding 2 (code 22)
Fuel Pump Relay (code 3)
Injector Valves - cyl 1, 3, 5 (code 16)
Injector Valves - cyl 2, 4, 6 (code 17)
Vehicle Speed Sensor signal (code 29)
I cleared the codes and went and drove the car hard. All the codes came back, except for the speed sensor code.
Any thoughts as to what's going on here? We were hoping to have the car ready to take to some track days next month. Thanks.'72 2002 pickup | '88 M5 | '89 330is | '89 M3 | '01 Z3M | '11 328xi-t
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This is the exact problem I have! I was too afraid to make a post because I'm new and don't know whats allowed. I have a 90' 325i. Below I'll post all the research I've done from reading forum posts; and from what I can tell is the Wiring Harness is where the problem is coming from. I still don't know how to proceed personally to know if it's the DME, Wiring Harness, or the chip the car came with. My car 2/3 times will go to redline, but that 1/3 will just cut power. (If posting links isn't allowed I'm sorry, I'll change the post)
I've searched high and low for a solution to this problem. I have visited several mechanics, one of them a certified Tech-Inspector for the Driver's...
Steve________________
1990 325i Sedan (Brilliantrot)
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