Rev ms2v3 99 miata rpm jumping
06-20-2013, 05:22 PM
#1
Rev ms2v3 99 miata rpm jumping
I got 99 miata with rev ms2v3 install in my car 4 days ago and now my rpm gauge jumping all the time and sometime it just sit at 0rpm with car running. When I hook up the laptop rpm reading at 850rpm what it suppose to be. I don't know what wrong w it can someone help out thanks
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06-22-2013, 07:29 PM
#2
Check your electrical grounds, take some sandpaper to both surfaces & clean 'em up then snug the bolt on.
One on the driver's side of the throttle body, one underneath the brake master cylinder area. Probably a few others that people could recommend. Make sure your battery cables are clean/tight as well.
One on the driver's side of the throttle body, one underneath the brake master cylinder area. Probably a few others that people could recommend. Make sure your battery cables are clean/tight as well.
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06-23-2013, 03:27 AM
#5
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I had another customer with the same problem, about a year ago. He sent me his ECU back, tested fine on the stim/bench. Then I went ahead and tested it on an actual car - the problem appeared roughly after 20 minutes of idling (whereas I could leave it running on the bench for an hour or more with no problems at all).
Since it didn't show on the bench, and I didn't have the same '99 car to test on again, I just replaced the entire expansion board and that solved it per the customer.
If you want to replace the 3 components that make up the tacho circuit, I can provide instructions so that you don't have to send me the ECU back.
Since it didn't show on the bench, and I didn't have the same '99 car to test on again, I just replaced the entire expansion board and that solved it per the customer.
If you want to replace the 3 components that make up the tacho circuit, I can provide instructions so that you don't have to send me the ECU back.
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06-23-2013, 01:08 PM
#6
Yeah can u sent me the instruction to antransj@gmail.com I'll see if I can do it without breaking anything. Thx
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