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Topic: Won't start (Read 3481 times) previous topic - next topic

Re: Won't start

Reply #20 –
Who overhauled you ECM

Re: Won't start

Reply #22 –
What was the price of the ECM

Re: Won't start

Reply #23 –
Having a lot of trouble getting the connectors of the EMC. They are frozen on and don't budge.
Any body have this problem and what was the solution.

Re: Won't start

Reply #24 –
Not on ECM's but other frozen connectors Kroil or 50-50 trans fluid acetone mix has helped on other connectors. It penetrates.

Re: Won't start

Reply #27 –
Still working on getting the connectors off the ECM.

Re: Won't start

Reply #28 –
EMC king said to use dish soap and I finally go one connector of so two to go.

Re: Won't start

Reply #30 –
No Allen wrench on mine. 7mm hex head bolt.

Re: Won't start

Reply #31 –
Still working on removing the connectors. It's been a bitch and I hope I can get them off and
get the ECM back so we can go to Q

Re: Won't start

Reply #32 –
Finally got the connectors off and have shipped the EMC off.  The last thing I used was salt and
water.

Re: Won't start

Reply #34 –
The ECM is fine so I will get it back tomorrow or Saturday. So I'm still in the dark.

Re: Won't start

Reply #35 –
Quote from: oldguy –
The ECM is fine so I will get it back tomorrow or Saturday. So I'm still in the dark.
Have you looked at the fuel system as a possible source of the problem? I had a similar issue with my ISL 8.9, and I originally spent a lot of time checking for electrical issues but the problem turned out to be the fuel pump. While your fuel system is different from mine, I imagine you could still have a problem with fuel delivery.

Re: Won't start

Reply #36 –
I have the Fass System and I had good volume to the secondary filter and changed it and the
fuel that I dumped out of the old filter was really clean. The problem first started with the wire
going to the ECU had come off the relay so no power to the ECU.

Re: Won't start

Reply #37 –
 Do you think you're getting adequate rotational speed? Are you seeing any fuel vapors coming out of the tailpipe? Are you getting power to the fuel solenoid on the pump?

Re: Won't start

Reply #38 –
While you have the ECM disconnected, have you checked the voltage at the power pins on the harness? Pin 39 is the ECM logic power, without that the ECM doesn't do anything. I think the wire you first addressed fixed this since it started communicating with the Silverleaf again. The other 4 pin connector is the main power that it uses to fire injectors and actually do things. I'd check that you have good voltage there.  The ECM isn't part of the start circuit, so it will crank over even with the ECM missing. It just won't start without the ECM.

Re: Won't start

Reply #39 –
That's a great drawing but I don't think it is for my engine. Before when trying to start the engine
I used a separate battery for the ECM to try and start it. I wander how many amps the ECU use as
I could but an ammeter on and check it.