Could this be the reason my MS doesent work? - Miata Turbo Forum - Boost cars, acquire cats.

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Old 04-16-2008, 11:39 PM   #1
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Default Could this be the reason my MS doesent work?

Well as you all know ive had my MS for months now not working.

Ok I just looked it over again, noticed I have R7 installed.

I am using MS as a piggyback, so I shouldent, right?

Would this cause the car to not run right? (extreamly rich for me).
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Old 04-16-2008, 11:44 PM   #2
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Yea, take R7 out. I have it in mine and I'm piggyback, and my values are fucked up. I finally got them decent, but the numbers are wrong. I gotta pull it and enter all the right values one day.
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Old 04-16-2008, 11:48 PM   #3
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It won't make your megasquirt not work it will just make your CLT readings 30* low I think, it will also keep your fans from coming on if you have the stock ECU controlling them.
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Old 04-16-2008, 11:58 PM   #4
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well that cant be the whole problem then, but atleast this will help...
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Old 04-17-2008, 10:31 AM   #5
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could it be you have sequential injection? .....asked for the fourth time now....

I will illustrate my concern:

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Old 04-17-2008, 11:17 AM   #6
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^^ lol nice diagram.
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Old 04-17-2008, 08:16 PM   #7
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I told ya its not a cali car, it only had one cat, one 02 sensor, and nothing to indicate it was.

Plus if I had a cali car, would that cause the MS to run the car realy rich?


Quote:
Originally Posted by Braineack View Post
could it be you have sequential injection? .....asked for the fourth time now....

I will illustrate my concern:

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Old 04-17-2008, 08:25 PM   #8
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look at your oem wiring harness....any wires on 2y and 2z (end of harness)? CA car doesn't mean two cat and o2 sensors.....my current '91 has never been in CA, FL all it's life, however it's a registered CA car.
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Old 04-17-2008, 08:41 PM   #9
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Quote:
Originally Posted by Braineack View Post
look at your oem wiring harness....any wires on 2y and 2z (end of harness)? CA car doesn't mean two cat and o2 sensors.....my current '91 has never been in CA, FL all it's life, however it's a registered CA car.
No, just checked.
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Old 04-17-2008, 08:54 PM   #10
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well screw you!
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Old 04-17-2008, 08:57 PM   #11
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Hmm. Link me to your thread or post up everything you know, what's been done, what's been tested, what's been eliminated, etc. I have no clue why it "doesn't work". Tell us everything you know, and post several big clear pics of the board, clear enough that we could read the print on the board. Then maybe someone will spot your error. Help yourself.
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Old 04-17-2008, 08:57 PM   #12
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Quote:
Originally Posted by Braineack View Post
well screw you!
ugh. Id atleast like to know if the MS unit itself works, then I could atleast sell it.
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Old 04-17-2008, 09:09 PM   #13
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OK, Here are my other threads

This talkes about my screwed up Q14 and Q15 connections

https://www.miataturbo.net/forum/showthread.php?t=15242

My main one https://www.miataturbo.net/forum/showthread.php?t=15368

Update with BRGracer https://www.miataturbo.net/forum/showthread.php?t=17837




SO

Bacially the car runs SUPER RICH with the MS. It wont idle, wont run at all, just if you give it alot of gas. At which points it like hydrolocks. Me and BRGracer tried alot to get it running, nothing. RQ fuel, Warmup, fuel tables, etc. He suspects its my car.

PICS
http://img252.imageshack.us/img252/2519/ms3001in6.jpg
http://img138.imageshack.us/img138/1866/ms3002ut7.jpg


Im lost. The car just wont work. It is makeing me very mad, its been like 4 months.

THE CAR RUNS FINE WITHOUT MS
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Old 04-17-2008, 09:11 PM   #14
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you could always mail it to someone that can trouble shoot and fix these things....and try on their own car.
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Old 04-17-2008, 11:19 PM   #15
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Quote:
Originally Posted by Braineack View Post
you could always mail it to someone that can trouble shoot and fix these things....and try on their own car.
like who?
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Old 04-17-2008, 11:35 PM   #16
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Ok, this seems elementary but do it anyway. Even if you did half of this yesterday.

Step1: Pull sparkplug #1. Attach wire and properly ground plug to engine. Spin engine over and verify it's getting a strong consistent spark.

Step2: Pull sparkplug #2. Attach wire and properly ground plug to engine. Spin engine over and verify it's getting a strong consistent spark.

Step3: Pull sparkplug #3. Attach wire and properly ground plug to engine. Spin engine over and verify it's getting a strong consistent spark.

Step4: Pull sparkplug #4. Attach wire and properly ground plug to engine. Spin engine over and verify it's getting a strong consistent spark.

If you pass 1-4, it's time to figure out if all 4 cylinders are exhibiting the same problem. Clean your sparkplugs or replace them. Then one by one, pull injector clips and determine which cylinders the engine is running on.

You have to isolate your problem. I read through a lot of your other threads and several people have suggested you take a through examination to ensure your getting a strong consistent spark. Do it. It's the easiest thing to diagnose.
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Old 04-18-2008, 10:41 AM   #17
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when i got my motor running again, i only was able to get injectors 3 & 4 to squirt...how that was possible I have no clue....since 1 & 3 and 2 & 4 are paired....if four squirts so shall two. I got it idling rough as hell, and i could unplug spark and fuel from 1 & 2 with no change. if i pulled anything from 3 & 4 it stalled.

so i pulled my injectors, threw the stock ones back, and the stock ecu. fired right up and ran great.

so i loaded the PNP map into my MS and tried that. again, great. so i set my timing.

threw the 460s back in, altered the req_fuel and cranking settings and it was golden.


no clue why it happened....but I first verified all the spark and fuel was working and went from there to rule things out.


if i wasn't a lazy ******* I'd tell you to send it to me, but i wont volunteer until my car is 100%. One thing you can try is a new CAS, as stealth97 had an odd issue...
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Old 04-19-2008, 12:13 AM   #18
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Alright, I have time tommorow. So imma plug the MS in, pull a plug and wire, unplug injectors. Check for spark, repeat for all 4.

If so, then I pull injector clips.

It cant be the CAS, it runs perfect with the stock ecu?

Quote:
Originally Posted by Braineack View Post
when i got my motor running again, i only was able to get injectors 3 & 4 to squirt...how that was possible I have no clue....since 1 & 3 and 2 & 4 are paired....if four squirts so shall two. I got it idling rough as hell, and i could unplug spark and fuel from 1 & 2 with no change. if i pulled anything from 3 & 4 it stalled.

so i pulled my injectors, threw the stock ones back, and the stock ecu. fired right up and ran great.

so i loaded the PNP map into my MS and tried that. again, great. so i set my timing.

threw the 460s back in, altered the req_fuel and cranking settings and it was golden.


no clue why it happened....but I first verified all the spark and fuel was working and went from there to rule things out.


if i wasn't a lazy ******* I'd tell you to send it to me, but i wont volunteer until my car is 100%. One thing you can try is a new CAS, as stealth97 had an odd issue...
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Old 04-19-2008, 02:32 PM   #19
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All 4 cylinders are getting spark and fuel. It just runs REALLY RICH.
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Old 04-19-2008, 03:32 PM   #20
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Hm well i got it to idle today for a min, then for some reason it decided to run really rich again.

Also I think I fuel washed my cylinders, and fucked up the rings. It seems to run bad on the stock ecu now. GREAT.
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