problem with Mercruiser 5.0 MPI
On Saturday Mercruiser engine started to show non-standard behavior. I drove about 1 km, I knocked on the neutral, himself a dead engine. Again I started the engine was idling 400 rpm and irregular operation, alarm whistles. The temperature of the fine, fine lubrication, oil in bravo fine.
I found if I turn the key to the ON position the fuel pump runs all the time. (before the glitch pump shut off after 2 seconds after releasing ON). Otherwise, the engine runs normally, full throttle in order. Alarm beeps constantly. Does anyone know what could it be? Thank you. : ( |
Re: problem with Mercruiser 5.0 MPI
Alarm issues are quite common Tomas. Have a look through this thread for answers.
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Re: problem with Mercruiser 5.0 MPI
Yes I know that these issues are common. But I do not know why the fuel pump runs continuously (in the ON position), it is a safe mode?
How do I reset the ECM unit 555 48 0708? |
Re: problem with Mercruiser 5.0 MPI
Sigh.... i completely missed the fuel pump issue. :(
Normally when the fuel pump is stuck on your fuel pump relay is stuck on, Try tapping/hitting on the relays a little to see if the pump will turn off with key on. You may need a new relay, The relays are on top of the engine. |
Re: problem with Mercruiser 5.0 MPI
Yes there are 3 relays. I tried to measure, and they are fine, I also exchanged between relay. And still the same problem. It is a safe mode of ECM?
Can I reset the ECM 555 0708 unit without a computer? |
Re: problem with Mercruiser 5.0 MPI
You need a scan tool to read & reset the ECM.
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Re: problem with Mercruiser 5.0 MPI
Can you please send me a web link where I buy scan tool and what model? Thank you,
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Re: problem with Mercruiser 5.0 MPI
The Rinda tool is the only one i know of but i'm sure there are others. Here's a link but you might want to look around cuz its not cheap. You would probably be better off finding a local Marine mechanic & let him attach his scanner to your motor & diagnose the problem. If you decide to DIY you will likely also need a service manual for the 555 ECM.
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Re: problem with Mercruiser 5.0 MPI
I want to buy a Mercruiser Scan Tool product from the manufacturer Rinda technologies. I wrote an email ([email protected]), but I still do not have a response from the Rinda.
Can you tell me where I can buy products Rinda? |
Re: problem with Mercruiser 5.0 MPI
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