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ECU fell out. pulled wires. got em' in. bike wont fire. now what?

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CBR >> Current Honda CBR Models >> CBR 600F4i >> ECU fell out. pulled wires. got em' in. bike wont fire. now what? Page: [1] 2   next >   >>
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ECU fell out. pulled wires. got em' in. bike wont fire.... - 6/3/2008 11:28:17 AM   
jdschmidt



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Well when i was out riding the little computer box fell out. pulled all the wires out of the grey clip and was a mess..i got a wiring diagram and me n a buddy spent an hour or so making sur every thing was wired up right.. all looked good. this time when i turned the key the fuel pump did prime (it wouldnt before) and then i tried to start it. it sounded like it wanted to. but nothing. checked it again. and after a few days. still nothing. i checked the BAS fuse and all other fuses and they are perfect. could this have done something to the sensor up in the nose fairing? im about ready to take it to the stealership and let them fix it..but ill see if anyone here has some ideas first. thanks!

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RE: ECU fell out. pulled wires. got em' in. bike wont f... - 6/3/2008 11:32:19 AM   
Tahoe SC



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so the wires came out of the connectors with the pin and you put them back into the harness?
did you measure each wire from the harness side to make sure it truly is connected in the harness?

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RE: ECU fell out. pulled wires. got em' in. bike wont f... - 6/3/2008 11:40:22 AM   
jdschmidt



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yep..follwed the diagram around the bike 100% and everything seems to be connected. and in the right spot. went over it about 20 times.

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RE: ECU fell out. pulled wires. got em' in. bike wont f... - 6/3/2008 11:57:14 AM   
Tahoe SC



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did you drop the bike or anything like that after this happend?

if the fuel pump doesn't prime, the bike won't start.

you can try bypassing the bank angle sensor.

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RE: ECU fell out. pulled wires. got em' in. bike wont f... - 6/3/2008 12:05:16 PM   
whtan20


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When i lowsided hard, everything in my battery tray fell out (battery, ecu, seat, etc.) i put them back in and the bike fired up fine amazingly.  What caused your bike to drop out the ecu?

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RE: ECU fell out. pulled wires. got em' in. bike wont f... - 6/3/2008 12:06:50 PM   
jdschmidt



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no, bike stayed up. the fuel pump does prime. but it didnt with the wires out(obviously)

i was hoping i wouldnt have to take off the front fairing..its a pain on my bike. oh well. worth a shot.


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RE: ECU fell out. pulled wires. got em' in. bike wont f... - 6/3/2008 12:08:45 PM   
jdschmidt



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quote:

ORIGINAL: whtan20

When i lowsided hard, everything in my battery tray fell out (battery, ecu, seat, etc.) i put them back in and the bike fired up fine amazingly.  What caused your bike to drop out the ecu?


poor positioning on my part.. didn secure it down. was hitting the twisties. doing some wheelies on the straighs..probably moved it around to much and it just fell out. i hope i dont need a new computer.


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RE: ECU fell out. pulled wires. got em' in. bike wont f... - 6/3/2008 12:24:03 PM   
Todd84


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Are you getting spark? If you are getting fuel check to see if you are getting spark.

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RE: ECU fell out. pulled wires. got em' in. bike wont f... - 6/3/2008 1:46:20 PM   
Rennen


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check if the battery is putting out enough power.

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RE: ECU fell out. pulled wires. got em' in. bike wont f... - 6/3/2008 2:39:34 PM   
ampfp


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+1 battery must be dead. esp after a fall

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RE: ECU fell out. pulled wires. got em' in. bike wont f... - 6/3/2008 3:32:45 PM   
jdschmidt



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batt. is fine. i put the charger on and nothing and let it set..it cranks just fine. and sounts like it wants to fire..but it just wont turn over..unless the batt. could be bad. i guess i could try replacing it.

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RE: ECU fell out. pulled wires. got em' in. bike wont f... - 6/3/2008 5:11:22 PM   
jdschmidt



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well i have it torn down to the carbs now and i dont see ONE THING that could be causing this..all wire harnesses are in tact. and i dont know what to do.

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RE: ECU fell out. pulled wires. got em' in. bike wont f... - 6/3/2008 6:26:00 PM   
maat

 

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Two questions..

1. Is the fuel pump priming when you turn the engine on?

2. Are you sure your F4i has carbs?

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RE: ECU fell out. pulled wires. got em' in. bike wont f... - 6/3/2008 8:03:10 PM   
Tahoe SC



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he said it is priming...so it's not fuel, it's definitely not air, so that leaves spark.

now time to check for spark.




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RE: ECU fell out. pulled wires. got em' in. bike wont f... - 6/3/2008 9:40:08 PM   
jdschmidt



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had my moms friend (motorcycle mechanic) come to the house. he said the computer is more thn likely done for. he said that falling out isnt going to affect spark,batt. ETC. so i guess ill look for a computer and try it out. 11:00 pm. time to go put it back together..this should go well considering i just took 3 vicodin  it will be interesting none the less.. 

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