R55 No start help - North American Motoring


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R55 No start help

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Old 07-11-2018, 01:09 PM
Chris9094 Chris9094 is offline
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R55 No start help

Hey everyone Iím new to the community and would like some help on my r55. Iím a mechanic by trade, and have prior experience on these cars. I bough this car from a friend who had it sitting for an year under unknown conditions. I did a head gasket job and timing chain service to it. I used the Mini Cooper timing tool to set the timing. And have assembled everything back to how it was. I noticed Iím not getting any fuel. So I replace the fuel pump relay. It wonít turn over it just cranks. I also replaced the crankshaft sensor and vanos solenoid. And oil pressure sensor. I tried connecting my obd2 scanner and my matco maxme scanner with no luck also. I get an error message on both my obd2 readers. I checked the fuse and itís also fine. Iím so lost I checked the motor mount ground and valve cover ground. What do you guys recommend. Iím really hoping ití something small I over looked and not the Dme. Thank you.
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Old 07-12-2018, 08:28 AM
MiniToBe MiniToBe is offline
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welcome aboard...

Did you check if you have spark? did you try quick start?

If the OBD reading cannot establish communication with the DME, then you have 1 of 3 issues...bad/missing DME relay in fuse box (under the hood), bad DME or bad fuse box (behind passenger kick panel)

where are you located?
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Old 07-12-2018, 10:32 AM
Chris9094 Chris9094 is offline
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Hey I checked the fuse. I havenít checked the relay do you happen to know which relay it is? Iíve been thinking since itís not starting itís a bad dme
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Old 07-12-2018, 10:36 AM
MiniToBe MiniToBe is offline
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the relays are in the fuse box next to the DME...if you flip the cover, the first two relays are for the engine. the upper two are for the fans.

do you know to happen if water got into the car through the sunroof?
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Old 07-12-2018, 10:39 AM
Chris9094 Chris9094 is offline
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To be honest Iím not sure all I know is the car sat for about an year all I did was the headgasket and timing chain. What would happen if water went thru the sunroof ?
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Old 07-12-2018, 10:50 AM
MiniToBe MiniToBe is offline
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if the water got to the fuse box, it may cause the car not to start or sometimes start and other times not. It can also make the car loose connection/communication to the DME.

check my build post #15. even though the car started, i had trouble keeping it running and just decided to replace the fuse box anyway...after that it was good.

https://www.northamericanmotoring.co...ml#post4359436
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Old 07-12-2018, 10:59 AM
Chris9094 Chris9094 is offline
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Iíll double check that relay later today. Is there a for sure way to confirm the dme is dead or the fuse box has water damage before I go out and spend a good chunk of change on This car ?
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Old 07-12-2018, 11:03 AM
MiniToBe MiniToBe is offline
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without using ISTAD (Mini/BMW dealer level SW), it is somewhat hard without spending some money to check/trouble shoot...if you have another Cooper you can try using the fuse box to see if you can talk to the DME. that's why I asked your location perhaps someone near you can help out.
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Old 07-12-2018, 11:29 AM
Chris9094 Chris9094 is offline
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I see, maybe I can go to the junkyard, Iím curious if maybe a r56 fusebox can work on a r55
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Old 07-12-2018, 11:32 AM
MiniToBe MiniToBe is offline
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it would work, but the rear barn doors will not function properly.
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Old 07-13-2018, 02:09 PM
Chris9094 Chris9094 is offline
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Took a look at the fuse box I have it off just looking to get another this weekend I was curious if there could be any grounds in the engine bay I might have over looked ?
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Old 07-13-2018, 03:05 PM
MiniToBe MiniToBe is offline
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Ground strap on the motor mount.
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Old 07-14-2018, 09:32 AM
Chris9094 Chris9094 is offline
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Is that the one by the top right motor mount
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Old 07-14-2018, 09:35 AM
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Yes.
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Old 07-14-2018, 07:09 PM
Chris9094 Chris9094 is offline
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Sweet Iíll look at that too thanks mini dude
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