URGENT Need help, no RPM input! - Miata Turbo Forum - Boost cars, acquire cats.

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Old 08-09-2008, 04:34 PM   #1
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Default URGENT Need help, no RPM input!

Ok so my car has been running fine for a while. Today I went to start it and it dident even catch.

It seems then when I crank it over, megatune shows a random rpm for .5 of a sec, then it shows 0 rpm.

For example, When I crank the car over, megatune will show 330 rpm and a PW of 3.2 for half of a seconded, then it shows 0 rpm and the resulting 0 PW.

Also, I have COPS.

I know the wireing from the bord to the harness is fine, I checked.

Its weird its like MS senses the RPM for a half a sec, then doesent.

What the hell is going on!? and I need the car to drive to the beach tommorow haha.... ****.

Is there something I can check with the cops?


ALSO IT RUNS FINE WITH THE STOCK ECU AND AFM (altho rich from my large injectors, but it runs none the less)
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Old 08-09-2008, 05:31 PM   #2
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Could this be a software issue?
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Old 08-09-2008, 06:08 PM   #3
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Generic Answer:

First: Try unpluging and repluging in MS and see what happens

Second: Reflash Firmware and load a KNOWN GOOD TUNE (N O T the one you're running right now).
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Old 08-09-2008, 06:34 PM   #4
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Well I got it running... for some reason one of the wired imbedded into the MS bord was scratched and broken. I put some solder on it, seems to work.

But now the Tach in the car doesent move? lol this I do not understand. The tach gets its signal from the gray sheilded wire from the MS, correct?
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Old 08-09-2008, 07:46 PM   #5
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forget that.
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Old 08-09-2008, 10:53 PM   #6
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**** now its acting up again. **** it im re doing the whole wireing tommorow.
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Old 08-11-2008, 01:49 AM   #7
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Took me like 3 hrs, but now the MS runs perfect. Yay for a shitty wireing job the first time around. haha
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Old 08-11-2008, 01:56 AM   #8
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Hasn't you MS not worked like 10 times and "shitty wiring" was the culprit? Do I see a trend?
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Old 08-11-2008, 02:06 AM   #9
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Quote:
Originally Posted by patsmx5 View Post
Hasn't you MS not worked like 10 times and "shitty wiring" was the culprit? Do I see a trend?
Its worked good for the past like 2 months... but the last problem was a wire mix up, this what shitty wireing. Oh well im done for good now
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