Injector driver question m800

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Injector driver question m800

Postby msgofast on Fri May 19, 2017 6:50 pm

Hi,

can an injector drive on the ecu fail in a way will drop out the injector under high load and but ok when light load?
ecu sustained a crash that cut the loom, so thinking maybe a sort killed something in the ecu?

thanks.
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Re: Injector driver question m800

Postby stevieturbo on Sat May 20, 2017 7:43 am

Unlikely, but I guess anything is possible.

Is the injector signal stopping at higher loads ? Which cylinder ?
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Re: Injector driver question m800

Postby msgofast on Mon May 22, 2017 9:31 am

unsure if it's an inj or plug, it's too clean off and on to be a plug.
need to get the board tested.
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Re: Injector driver question m800

Postby SprinterTRD on Mon May 22, 2017 1:07 pm

Just do a injector test under "Utilities" "Test output" crank up the RPM and duty with no pressure in the fuel line.

If it works there then its not the ECU.
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Re: Injector driver question m800

Postby stevieturbo on Tue May 23, 2017 4:21 am

msgofast wrote:unsure if it's an inj or plug, it's too clean off and on to be a plug.
need to get the board tested.


Then test it. Don't guess.

Get a scope or meter on the output and test/monitor under load. You seem to suggest this is a repeatable problem ?
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