Engine FN2 Cranks But Does Not Start - Civinfo
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post #1 of 20 (permalink) Old 10th March 2019, 20:29 Thread Starter
 
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FN2 Cranks But Does Not Start

Hi guys, hope you can help.

My FN2 decided not start, initially I didn't hear my fuel pump prime, I pressed the fuel cut switch, no luck. The only way it will start is if I let the battery run flat and charge it again.

I was told it’s a faulty fuel pump so I replaced it, once I replaced it the fuel pump took 5-10 minutes to kick in when the ignition was on, it worked for 2 weeks then then it failed to start again!

I then wired the fuel pump into my cigarette lighter so the fuel pump came on soon as the ignition was on.

This worked for a week, then stopped again!

There is no engine warning lights, or anything else. If I let the battery run out and charge it will work again. I don't think its the battery as I put the jump leads on and try to start it, it still does not start.

Any ideas?

Last edited by kamil44; 10th March 2019 at 20:43.
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post #2 of 20 (permalink) Old 10th March 2019, 21:33
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Depends on how good, or rather how thick, your jump leads are, thin ones are notorious for being poor conductors or electricity and just heat up instead or passing currant. How old is your battery? Ive seen a few posts on here now where a poor battery has caused many starting issues even when it appears ok. The fact its working ok after you charge it would lead my to be looking at the battery first.
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post #3 of 20 (permalink) Old 11th March 2019, 15:32 Thread Starter
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Battery is 6 months old, I'm thinking its the ECU rather than the battery. Because when the battery is flat it resets the ECU.
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post #4 of 20 (permalink) Old 11th March 2019, 17:19
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I'd say similar; The fact it works after the battery runs flat and is charged does seem dubious.

You could do a battery pull to also trigger the ECU Reset, and see if it still runs on that battery without running it flat.

Another option would be to try another battery; Perhaps one from a willing friend's car that is known to be working (ensuring it is of adequate capacity / CCA) and see if it starts reliably with that.
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post #5 of 20 (permalink) Old 12th March 2019, 00:08
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Could be the cut off button?
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post #6 of 20 (permalink) Old 12th March 2019, 09:07
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As above, have you tried an ecu reset?
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post #7 of 20 (permalink) Old 12th March 2019, 10:04
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What battery are you using, cca etc?
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post #8 of 20 (permalink) Old 12th March 2019, 18:02 Thread Starter
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The battery I am using is A14 Varta Blue Dynamic Car Battery 12V 40Ah (540126033) (054).

This is due to not having space in my bay to fit a bigger battery.
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post #9 of 20 (permalink) Old 12th March 2019, 18:03 Thread Starter
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I have tried leaving my battery unplugged for over 24 hours, still the same issue.
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post #10 of 20 (permalink) Old 12th March 2019, 18:05 Thread Starter
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ECU reset, I touched my + terminal with my - terminal. That worked once, it started. However when it happened again and I tried it didn't work.
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post #11 of 20 (permalink) Old 13th March 2019, 10:06
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Fuel relay?

I noticed a few minor cut outs when driving once then from there it got worse and wouldn't start, I chekced fuel pump and all ok, change dteh fuel relay, so far all good to date.

It cuased no errors or lights.
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post #12 of 20 (permalink) Old 15th March 2019, 15:42 Thread Starter
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Does anyone know where the fuel pump relay is located?
Would this be my problem as my fuel pump is wired to live on ignition, I can hear the pump priming.
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post #13 of 20 (permalink) Old 15th March 2019, 17:33
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Have you tried the cutoff button behind the dash, or was I wasting my time suggesting it?
Did the jump start 're-programme' the key?
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post #14 of 20 (permalink) Old 16th March 2019, 00:16 Thread Starter
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Hi M8TJT,

I mentioned in the beginning that I tried that already and it didn't work.
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post #15 of 20 (permalink) Old 16th March 2019, 00:25
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Ah, I see. Post #1 paragraph 1.
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post #16 of 20 (permalink) Old 16th March 2019, 12:05
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Mine was intermitant, worth a check to tick it off the list but access is a ball ache


https://www.civinfo.com/wiki/index.php/Fusebox_Diagrams


Blue one on the interior fuse box


We unhooke dteh fuel pipe in the engine bay and found fuel rarely came out when key turned (caught all fuel in a bottle to re-use)


Good luck
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post #17 of 20 (permalink) Old 30th March 2019, 00:37 Thread Starter
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This worked, thanks goldstar0011.


Quote:
Originally Posted by goldstar0011 View Post
Mine was intermitant, worth a check to tick it off the list but access is a ball ache


https://www.civinfo.com/wiki/index.php/Fusebox_Diagrams


Blue one on the interior fuse box


We unhooke dteh fuel pipe in the engine bay and found fuel rarely came out when key turned (caught all fuel in a bottle to re-use)


Good luck
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post #18 of 20 (permalink) Old 4th April 2019, 11:37
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Awesome!! Chuffed it worked.
I left the car running for few hours to ensure no issues there and all good.
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post #19 of 20 (permalink) Old 6th April 2019, 18:20 Thread Starter
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Does not start again! Watch video:

Any ideas?
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post #20 of 20 (permalink) Old 5th July 2019, 11:00
 
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Did you solve the problem? I have a similar problem
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