951 Won't rev above 5200rpm
05-09-2016, 03:30 PM
#1
5th Gear
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Location: Sweden
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951 Won't rev above 5200rpm
I have changed or tested with another: fuel pump, FPR, injectors, AFM, spark plugs, rotor, distributor, DME box, KLR box
I have measured plug cables and resistance in crank position sensors.
What is left to test?
I have measured plug cables and resistance in crank position sensors.
What is left to test?
05-09-2016, 03:59 PM
#4
5th Gear
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I have replaced the cat with a pipe.
I have also replaced fuel filter
Could a faulty ref or speed sensor cause this problem? I mean if it is giving sufficient signal at low rpm but something happens at high rpm?
I have also replaced fuel filter
Could a faulty ref or speed sensor cause this problem? I mean if it is giving sufficient signal at low rpm but something happens at high rpm?
05-09-2016, 04:14 PM
#6
Rennlist Member
Yes, if the gap is not correct... at high RPMs it's capable of putting out ~50v peak believe it or not. If the gap is too small that voltage is even higher, and if it's too large, the signal may have a solid voltage reading but loses sync as the frequency picks up (at 130 teeth, it has to register over 11,000 teeth / second at 5200 rpm)
