Fuel pump is constantly running

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turboyota
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Post by turboyota »

DGFTurbo wrote:
keithmac wrote:Only problem I had was the solder pads contacting each other (bad soldering), you shouldn`t ever see 5v out of the pin, just gound when the fuel pump output is active. The Processor output is 5v, sounds like something`s wired in wrong on the board..
What pads were bridged? Im having the same problem and i cant find any bridged pads.
Yeah, I can't find any solder problems either. Did you assemble your MS yourself?
10.80@133.15 Talon
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keithmac
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Post by keithmac »

2 pads on the fuel pump transistor were (just) bridged with solder, I didn`t assemble my board either..

First step would be to replace the fuel pump transistor and check it`s orientation I would have though?
Squirted VW GTI 16vG60 mk2
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turboyota
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Post by turboyota »

keithmac wrote:2 pads on the fuel pump transistor were (just) bridged with solder, I didn`t assemble my board either..

First step would be to replace the fuel pump transistor and check it`s orientation I would have though?
So, you fixed your problem? And you were having the same problem? 5V out anytime the MS is powered?

Thanks
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Turbo Corolla, soon to run on MSnS
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DGFTurbo
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Post by DGFTurbo »

turboyota wrote:
DGFTurbo wrote:
keithmac wrote:Only problem I had was the solder pads contacting each other (bad soldering), you shouldn`t ever see 5v out of the pin, just gound when the fuel pump output is active. The Processor output is 5v, sounds like something`s wired in wrong on the board..
What pads were bridged? Im having the same problem and i cant find any bridged pads.
Yeah, I can't find any solder problems either. Did you assemble your MS yourself?
Yes I did

What transistor is the fuel pump circuit?
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keithmac
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Post by keithmac »

Its Q3 on the v2.2 near the db37 connector.

I think had a constant ground problem with mine, never checked the output of the pin just had a close look over the board where the transitor sits.
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DGFTurbo
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Post by DGFTurbo »

keithmac wrote:Its Q3 on the v2.2 near the db37 connector.

I think had a constant ground problem with mine, never checked the output of the pin just had a close look over the board where the transitor sits.
What about on the V3?
I should have mentioned im running MS1 V3
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