Megasquirt PNP Pro repair
2 Attachment(s)
Does anyone know who repairs megasquirts? I have a MSPNP Pro for my 1990 Miata controlling a turbo vvt engine. I was driving around doing some autotune. Everything was fine for quite a while, then as I was almost getting home, I made a right turn and my head lights turned off then back on, then all of a sudden the car stumbled and turned off. Smoke started to come from the Megasquirt. I turned off the key and noticed that my headlights would not work anymore as well as my emergency lights, although the cluster still blinked the indicators very quickly like when there is a short on the headlights. Anyways the main problem after examining the ECU is that I burnt some things on there and some traces (I think that's what they're called) got damaged also. I hadn't connected the tach out cable coming out the ecu to anything and the wiring was exposed. Since the ECU wasn't bolted down yet I wonder if this cable could have touch the chassis and shorted it out? I'm kind of bummed out since I had just recently finished my vvt swap and was getting some tuning done. :cry:
Attachment 183134 http://i990.photobucket.com/albums/a...921_004141.jpg http://i990.photobucket.com/albums/a...921_004218.jpg http://i990.photobucket.com/albums/a...921_004226.jpg http://i990.photobucket.com/albums/a...921_004302.jpg http://i990.photobucket.com/albums/a...921_004317.jpg Attachment 183135 |
The only person I have heard of that will repair these things is PFTuning which is Peter Florence. He's in one of the Carolina's. But I hear he is incredibly difficult to get in touch with. You might try the facebook page.
Obviously DIYAutotune but I believe they don't repair as much as replace, if you know what I mean. Call them, they charge an hourly rate plus parts. Who knows, might be under warranty. And one of the site big wigs (jsmcortina) at MSForums says he repairs in his sig. Might be worth a shot although he is across the pond. Welcome - James Murray Engineering Whatever the case I highly doubt the tach out touching ground or otherwise would be the culprit to your ecu failure. And I would definitely rule it out of causing the headlights to turn off and whatnot. I really do feel for you so check your wiring before putting another $1000 ecu back in the car. |
I always thought Jsmcortina really helped on ms extra building, don't know if he was involved with the production of the pnp pro.
I'd start with talking to Matt Cramer hopefully he could help you or point you in the right direction, although that board does look pretty fubared |
You need to go through DIYAutoTune.
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you need to figure out what dumped all the voltage to ground else your burn up the next one too.
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Yes, this thing looks like it's been hit with 18 volts... and the voltage has been kept that high for a long time.
We can repair the damage in the pictures - it's a two layer board, so there's little risk of damaging other traces than the cooked ones. Email us at support@diyautotune.com. |
Originally Posted by Matt Cramer
(Post 1362274)
Yes, this thing looks like it's been hit with 18 volts... and the voltage has been kept that high for a long time.
We can repair the damage in the pictures - it's a two layer board, so there's little risk of damaging other traces than the cooked ones. Email us at support@diyautotune.com. |
Originally Posted by Braineack
(Post 1362256)
you need to figure out what dumped all the voltage to ground else your burn up the next one too.
-David |
Let me ask you a question... what alternator are you using? If you are using the VVT alternator, you will need some sort of voltage regulator.
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Originally Posted by MX5RACER
(Post 1362314)
Let me ask you a question... what alternator are you using? If you are using the VVT alternator, you will need some sort of voltage regulator.
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Originally Posted by konmo
(Post 1362316)
Yes I was using the VVT engine alternator, but I thought that was okay to use since the MSPNP Pro can control it. At least that is what I'm pretty sure I had read. I didn't change any of the alternator control settings in tunerstudio though, left whatever was on the base map for 01-05.
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I think AFM is onto something. If you did not rewire the alternator when you swapped on the VVT one the MSPro will not properly control it. I would go the easy route that he suggested and find a 94-97 alternator and swap that over. I am assuming OP is already using the ribbed water pump pulley since it was probably on the vvt motor he got.
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Originally Posted by afm
(Post 1362335)
Neither wire from the alternator (from an NA6 at least) is a control signal from the ECU. So if you PnP-ed the harness, it won't work. Get an NA alternator with a ribbed pulley, or one of the junkyard alternatives.
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If it was the alternator, would that cause my battery to drain within hours? Because that is something I first noticed.
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Originally Posted by MX5RACER
Let me ask you a question... what alternator are you using? If you are using the VVT alternator, you will need some sort of voltage regulator.
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Originally Posted by shuiend
(Post 1362338)
I think AFM is onto something. If you did not rewire the alternator when you swapped on the VVT one the MSPro will not properly control it. I would go the easy route that he suggested and find a 94-97 alternator and swap that over. I am assuming OP is already using the ribbed water pump pulley since it was probably on the vvt motor he got.
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yes. the MS is ready to handle voltage regulation, but it wasnt wired up to do it.
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Much like with sequential injection, you can't use any features of the ECU that the harness doesn't support without extra wires. Unlike with sequential fuel, running wires to control an NB alternator with an ECU is a bad idea. Use the NA8 one if you have it.
That does really suck. |
Originally Posted by Braineack
(Post 1362347)
yes. the MS is ready to handle voltage regulation, but it wasnt wired up to do it.
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Originally Posted by afm
(Post 1362352)
Much like with sequential injection, you can't use any features of the ECU that the harness doesn't support without extra wires. Unlike with sequential fuel, running wires to control an NB alternator with an ECU is a bad idea. Use the NA8 one if you have it.
That does really suck. |
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