injectors no responce

For discussing injector selection,manifold modifications, throttle bodies, fuel supply system design and construction, and FIdle valves and IACs.
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Fera
MegaSquirt Newbie
Posts: 3
Joined: Thu Nov 18, 2010 4:39 pm

injectors no responce

Post by Fera »

Hi guys. I am new to the forum

I'm from Argentina .. and my English is based on a translator ..
so excuse me know

I read a lot of the forum. looking for my problem ... and nothing.


I have a v3.0 ms2

my problem is this ..

I have no voltage at the injectors

eh tried many things ...

the car was working perfectly .. and a day to the next did this happen

I have high impedance injectors

any ideas?

I think that something was burned in changing the characteristics of the nozzle to a low impedance test that I have


thanks
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trakkies
Super Squirter
Posts: 1162
Joined: Tue Dec 30, 2008 3:06 am
Location: SW London, UK

Re: injectors no responce

Post by trakkies »

You can do a basic check with a stim. The single injector LED on the MS flashes with the processor - the two on the stim with the injection drivers.
Dave P, London UK.
Rover V-8
MSII V3
EDIS
Tech Edge Wideband
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Fera
MegaSquirt Newbie
Posts: 3
Joined: Thu Nov 18, 2010 4:39 pm

Re: injectors no responce

Post by Fera »

I have no stim

but when you start the car will not start any led.

just flickers to give the ecu 12v


any ideas?

I'm about to test the Troubleshooting Your V3 MegaSquirt ® Main Board
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Matt Cramer
Super Squirter
Posts: 2951
Joined: Sat Jul 03, 2004 11:35 am

Re: injectors no responce

Post by Matt Cramer »

The MegaSquirt should not be sending voltage to the injectors; they should get the voltage from the same relay that gives the MegaSquirt voltage. Check your wiring.
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Fera
MegaSquirt Newbie
Posts: 3
Joined: Thu Nov 18, 2010 4:39 pm

Re: injectors no responce

Post by Fera »

Matt Cramer wrote:The MegaSquirt should not be sending voltage to the injectors; they should get the voltage from the same relay that gives the MegaSquirt voltage. Check your wiring.
wiring is excellent ..

the problem was the U4

.. now I have a new problem .-

the number 2 injector bank is continuously open

any solution?
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trakkies
Super Squirter
Posts: 1162
Joined: Tue Dec 30, 2008 3:06 am
Location: SW London, UK

Re: injectors no responce

Post by trakkies »

Fera wrote:
Matt Cramer wrote:The MegaSquirt should not be sending voltage to the injectors; they should get the voltage from the same relay that gives the MegaSquirt voltage. Check your wiring.
wiring is excellent ..

the problem was the U4

.. now I have a new problem .-

the number 2 injector bank is continuously open

any solution?
If one bank is working normally, it must be a problem in the driver circuit or wiring to the other one. A stim would show if the MS is ok as it has two LEDs for the injector circuits. And makes things easier for fault finding in the MS on the bench. It's not so easy to check voltages etc within the MS on the car.
Dave P, London UK.
Rover V-8
MSII V3
EDIS
Tech Edge Wideband
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