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#1
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Rpm cut off at 3,500rpm
I need help. I have a 5 speed swapped SVX, CEL isn't on, just rpm cut at 3,500rpm most of the time. Here's a video of it in neutral, does it in all gear though (really jarring in gear of course)
https://youtu.be/KBmwa2EbwaY
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-Steven 1992 SVX Purple and Black 5 speed swap SOLD *1993 SVX Silver and Black *1994 SVX L Barcelona Red FWD |
#2
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Re: Rpm cut off at 3,500rpm
Where does anyone go for help with the SVX these days? This is so sad compared to how this forum used to be back when I first joined...
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-Steven 1992 SVX Purple and Black 5 speed swap SOLD *1993 SVX Silver and Black *1994 SVX L Barcelona Red FWD |
#3
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Re: Rpm cut off at 3,500rpm
I agree with you 100%.
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1997 Bordeaux Pearl, 2010 Mercedes Benz GLK350, 2018 BMW 640i GT Xdrive, 2012 Moto Guzzi Norge GT 8V, |
#4
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Re: Rpm cut off at 3,500rpm
looks like rev limiter limp mode but no check engine light?
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#5
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Re: Rpm cut off at 3,500rpm
How long has it been doing it?
How long ago was it converted to 5 speed?
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One Arm Bloke. Tell it like it is! 95 Lsi. Bordeaux Pearl, Aust. RHD.149,000Kls Subaru BBS wheels. 97 Liberty GX Auto sedan. 320,000Kls. 04 Liberty 30R Auto Premium. 92.000kls. |
#6
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Re: Rpm cut off at 3,500rpm
Quote:
I have saved CELs for both O2 sensors, but nothing current. If somehow both O2 sensors were out, would it run right or cause this?
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-Steven 1992 SVX Purple and Black 5 speed swap SOLD *1993 SVX Silver and Black *1994 SVX L Barcelona Red FWD |
#7
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Re: Rpm cut off at 3,500rpm
I can't think of anything that would cause it sorry, but I have seen some 5 speed conversions where the wiring was altered that caused some problems. Did you run any extra wiring, or jump any connections?
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One Arm Bloke. Tell it like it is! 95 Lsi. Bordeaux Pearl, Aust. RHD.149,000Kls Subaru BBS wheels. 97 Liberty GX Auto sedan. 320,000Kls. 04 Liberty 30R Auto Premium. 92.000kls. |
#8
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Re: Rpm cut off at 3,500rpm
I didn't do the swap. I'm asking the mechanic now.
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-Steven 1992 SVX Purple and Black 5 speed swap SOLD *1993 SVX Silver and Black *1994 SVX L Barcelona Red FWD |
#9
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Re: Rpm cut off at 3,500rpm
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One Arm Bloke. Tell it like it is! 95 Lsi. Bordeaux Pearl, Aust. RHD.149,000Kls Subaru BBS wheels. 97 Liberty GX Auto sedan. 320,000Kls. 04 Liberty 30R Auto Premium. 92.000kls. |
#10
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Re: Rpm cut off at 3,500rpm
Quote:
The taco utilises a signal from the ECU, which apparently uses the crank position sensor or the engine timing circuitry in order to detect engine speed. The tacho derives its ground and battery voltage supply via a two pin plug-socket connected by a black ground wire and a green yellow positive supply wire, supplied via fuse 15. From the available diagrams it appears to exit the instrument loom and is under the dash. Worth a check for voltage and ground.
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Trevor, New Zealand. As a child, on cold mornings I gladly stood in cowpats to warm my bare feet, but I detest bull$hit! Last edited by Trevor; 12-15-2018 at 08:47 PM. Reason: Typo |
#11
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Re: Rpm cut off at 3,500rpm
Fixed it. Loose ground terminal on the intake manifold. Back passenger side. I figured it was a ground issue when my speedo started cutting out too.
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-Steven 1992 SVX Purple and Black 5 speed swap SOLD *1993 SVX Silver and Black *1994 SVX L Barcelona Red FWD |
#12
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Re: Rpm cut off at 3,500rpm
The engine movement must have been moving it on and off.
That was an easy fix.
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One Arm Bloke. Tell it like it is! 95 Lsi. Bordeaux Pearl, Aust. RHD.149,000Kls Subaru BBS wheels. 97 Liberty GX Auto sedan. 320,000Kls. 04 Liberty 30R Auto Premium. 92.000kls. |
#13
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Re: Rpm cut off at 3,500rpm
Good one, my analysis was spot on.
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Trevor, New Zealand. As a child, on cold mornings I gladly stood in cowpats to warm my bare feet, but I detest bull$hit! |
#14
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Re: Rpm cut off at 3,500rpm
Absolutely, I had nightmares this wouldn't ever go away...
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-Steven 1992 SVX Purple and Black 5 speed swap SOLD *1993 SVX Silver and Black *1994 SVX L Barcelona Red FWD |
#15
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Re: Rpm cut off at 3,500rpm
Spot on analysis! I had the intake manifold off a week ago to replace all the cracking vacuum lines and PCV system. I finger tightened that bolt and forgot about it as the car was running perfect. I guess it wiggled loose.
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-Steven 1992 SVX Purple and Black 5 speed swap SOLD *1993 SVX Silver and Black *1994 SVX L Barcelona Red FWD |
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