Fuel pumps not running, went through troubleshooting,understand how relay board works, pin37 etc.Followed wiring back to main board, where i found the metal strip printed on the board that runs from pin 37 to the leg on Q3 then to D7 had come off the board and curled up.This suggests to me that it has been hot!
Now the question is. What is likely to be the cause.I did have some wiring issues in cable from MS to power board. Now rectified.Orientation of Q3 and D7 double checked and correct.
What will i need to replace. Other than the strip.
Any suggestions would be well received. Regards Wayne.
Fuel Pump Controller "fried"
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If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
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Matt Cramer
- Super Squirter
- Posts: 2951
- Joined: Sat Jul 03, 2004 11:35 am
Re: Fuel Pump Controller "fried"
It would help if you posted what main board this is.
Re: Fuel Pump Controller "fried"
Sorry Matt. Its a V2.2. I have had the engine running but only with a bridge wire in the FP relay.
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Matt Cramer
- Super Squirter
- Posts: 2951
- Joined: Sat Jul 03, 2004 11:35 am
Re: Fuel Pump Controller "fried"
Q3 is probably damaged along with the burned spot on the PCB.
Re: Fuel Pump Controller "fried"
Thganks Matt i will put a new Q3 on and replace the trace and see how it goes
Re: Fuel Pump Controller "fried"
Problem solved, replaced Q3 and Q5 replaced the trace with thin wire on the back of the board. Also found the small crystal on the clock circuit damaged from manhandling, replaced that and it is all go.