car dies near 3k rpm
Moderators: jsmcortina, muythaibxr
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- Master MS/Extra'er
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- Master MS/Extra'er
- Posts: 722
- Joined: Thu Jan 05, 2006 8:26 pm
- Location: CONNECTICUT
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- Master MS/Extra'er
- Posts: 722
- Joined: Thu Jan 05, 2006 8:26 pm
- Location: CONNECTICUT
Do you have a stim you can use to test your Megasquirt? I don't have any suggestions, not much I can do from 3000 miles away, I'm sure Most of the "Experts" could fix your problem if there were one nearby your location.
Perhaps you can try sending your Megasquirt to someone to have them take a look at it? look in the products and services forum.
Also you should have a buddy double check your wiring to the Assembly manual external diagram. Checking the connections for shorts or opens.
Perhaps you can try sending your Megasquirt to someone to have them take a look at it? look in the products and services forum.
Also you should have a buddy double check your wiring to the Assembly manual external diagram. Checking the connections for shorts or opens.
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- Master MS/Extra'er
- Posts: 722
- Joined: Thu Jan 05, 2006 8:26 pm
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yes i have a stim. in the stim everything see ok i alredy check all my wiring and everything see ok but i notices something when i go in the trottle slow in to get to like 2500 rpm led 17( using as spark output)shot off and on also using led 17 as spark output the led is always one dont blink also i put the 470 resistor right in the 4 pin module B and C is that right or should i put it in the wires that coming out of the connectors.
elturbonitroso wrote:yes i have a stim. in the stim everything see ok i alredy check all my wiring and everything see ok but i notices something when i go in the trottle slow in to get to like 2500 rpm led 17( using as spark output)shot off and on also using led 17 as spark output the led is always one dont blink also i put the 470 resistor right in the 4 pin module B and C is that right or should i put it in the wires that coming out of the connectors.
While you are running on the stim, and noticing the LED turning off, is the transistor getting hot? maybe take a look at the solder joints at the parts that comprise the LED17 circuit for possible cold solder joints? Also inspect for the proper componants and orientation. If you still don't find anything wrong you might try replacing the transistor.
What diagram are you using that uses a 470ohm resistor? You need to be using a 1k resistor from B to C.
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- Master MS/Extra'er
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in the stim the led 17 is always on is in the car when i near the 2500 rpm when the led 17 turn off and on and looks like everything is going off and on. doing some testing with a multimeter i found something in the 4 pin in B i got 14v all the time in C 4.85v when i rev the car the 5 v desapires and i think this is my problem what you guys any advices is good.
My understanding of your problem is a little hampered by your ability make a complete sentance, but believe me I'm trying to help you.
Ok, that sounds like you may be overloading the 5vREF. When you turn on the ignition switch, open up the tuning page and go to Reltime display, do you get all valid numbers for all your guages? when you push on the gas pedal, does the TPS go from about 0 increasing is you push?
Ok, that sounds like you may be overloading the 5vREF. When you turn on the ignition switch, open up the tuning page and go to Reltime display, do you get all valid numbers for all your guages? when you push on the gas pedal, does the TPS go from about 0 increasing is you push?
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- Master MS/Extra'er
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- Master MS/Extra'er
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- Master MS/Extra'er
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Like I said, a diode symbol.elturbonitroso wrote:ok i think i goit it in mines look like a arrowand the +.
http://en.wikipedia.org/wiki/Image:Diode_symbol.svg
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- Master MS/Extra'er
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- Joined: Thu Jan 05, 2006 8:26 pm
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- Master MS/Extra'er
- Posts: 722
- Joined: Thu Jan 05, 2006 8:26 pm
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