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 |
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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Re: Rpm cut off at 3,500rpm
looks like rev limiter limp mode but no check engine light?
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How long has it been doing it?
How long ago was it converted to 5 speed? |
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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? |
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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I didn't do the swap. I'm asking the mechanic now.
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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. |
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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The engine movement must have been moving it on and off.
That was an easy fix.:) |
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