02 vvt diypnp no tach signal

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01-17-2016, 04:48 PM

redturbomiata

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02 vvt diypnp no tach signal

02 Miata vvt isn't getting a tach signal and the anti theft light is flashing. Using the 99-00 crank settings, checked wiring on the inside of the pnp unit and it is correct. Any ideas

01-17-2016, 05:04 PM

90 Turbo

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Running of vvt sensors or cas? Wouldn't that be 01 thru 05 on setting not 99 to 00?

01-17-2016, 05:07 PM

redturbomiata

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Quote:

Originally Posted by 90 Turbo

Running of vvt sensors or cas? Wouldn't that be 01 thru 05 on setting not 99 to 00?

Vvt sensors. I thought they used the same crank and cam sensors

01-17-2016, 05:10 PM

90 Turbo

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I don't know just running off cas on my vvt. Wish I was more help. Crank sensor clearance tight?

01-17-2016, 05:17 PM

redturbomiata

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Quote:

Originally Posted by 90 Turbo

I don't know just running off cas on my vvt. Wish I was more help. Crank sensor clearance tight?

Runs on stock Ecu

01-17-2016, 05:48 PM

90 Turbo

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Take a log of it cranking and post it with ur msq. Someone who knows more will help.

01-17-2016, 09:01 PM

redturbomiata

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Quote:

Originally Posted by 90 Turbo

Take a log of it cranking and post it with ur msq. Someone who knows more will help.

will do when i get back over to where the car is.

01-17-2016, 09:02 PM

redturbomiata

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now looking at wiring compared to what is done to the pnp it looks like 4aa is a common ground to the cam and crank sensor, correct?

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02 vvt diypnp no tach signal-80-ecu_wiring_diagram_2002_4ae78d12c662f18664e3b9e2b87030f6745081ab.png

01-18-2016, 08:43 AM

Matt Cramer

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Can you post a composite log of an attempted start?

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01-18-2016, 02:41 PM

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redturbomiata

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here is a log of 2 attempted starts. it seems to see rpm for a fraction of a second then nothing

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nostart1_18_16.csv (10.3 KB, 71 views)

01-18-2016, 02:59 PM

#11

Braineack

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Quote:

Originally Posted by redturbomiata

now looking at wiring compared to what is done to the pnp it looks like 4aa is a common ground to the cam and crank sensor, correct?

if you needed a pinout, you could have asked...

01-18-2016, 03:01 PM

#12

redturbomiata

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Quote:

Originally Posted by Braineack

if you needed a pinout, you could have asked...

if you have one i would greatly appreciate it.

01-19-2016, 12:02 AM

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don_w

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Hey Tadd, it's me Don. I am following this so I can keep up on any updates.

01-19-2016, 07:42 AM

#14

Braineack

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Quote:

Originally Posted by redturbomiata

if you have one i would greatly appreciate it.

let me convert it for the DIYPNP. hold on.

01-19-2016, 08:11 AM

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Braineack

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Quote:

Originally Posted by Braineack

let me convert it for the DIYPNP. hold on.

take a look at this:

https://docs.google.com/spreadsheets...it?usp=sharing

01-19-2016, 08:48 AM

#16

redturbomiata

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Quote:

Originally Posted by Braineack

take a look at this:

https://docs.google.com/spreadsheets...it?usp=sharing

Thank you sir.

01-19-2016, 03:05 PM

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Matt Cramer

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Quote:

Originally Posted by redturbomiata

here is a log of 2 attempted starts. it seems to see rpm for a fraction of a second then nothing

Crank signal looks OK, cam looks a little noisy but is at least doing something. Can you get a longer log? That one only seems to be a few seconds of cranking.

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01-19-2016, 03:50 PM

#18

redturbomiata

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Quote:

Originally Posted by Matt Cramer

Crank signal looks OK, cam looks a little noisy but is at least doing something. Can you get a longer log? That one only seems to be a few seconds of cranking.

Yea sure can, I'll try to get over there this evening