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Looking for some help


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#1 raimartynas

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Posted 03 May 2021 - 10:24 AM

Hi everybody, faced some strange problems with my Ford Mondeo MK4 BA7 2007 2.0 TDI.

So it all happened when I bought some bulbs from China for ~70euro that transform my Xenon to LED. When I installed them and started my car it died in 2-3 seconds. I couldn't start it again after that, so I checked all the fuses just by looking into to them, all were good. Did diagnostic with ForScan and found that battery voltage is low so I charged battery over night up to full but it didn't solved the problem, just that it now showed only two errors that I don't think is relative. I bought multimeter and tested relays as well all the fuses again, all were good. I tried to spray starting fluid to air intake still nothing. I tried to check some parameters with ForScan, like fuel pressure and some more. I'm not an electric nor the mechanic so I just googled all the things but could find any problem with the parameters it showed me. (I'm adding photos of it so if some one understands more it would be great to check them.) Car up to this moment worked perfectly.

 

Strange think that I saw was on my instrument cluster (Convers+) time is frozen, I read that if instrument cluster is broken it can prevent car from starting so you won't cheat on your odometer or so. Any ideas on that ? Should I try to change my instrument cluster ?

 

Any help is appreciated.

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#2 PURPLE_2L_LX

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Posted 03 May 2021 - 12:49 PM

Does the engine crank over fairly fast or really slowly?

 

If it started and ran initially then i doubt it was the battery at fault, whats the fuel

pressure when cranking?


MK4.5 TDCI 140 Business Estate.

 

MK3 FUSE INFO CLICK HERE ... FORD WIKI CLICK HERE .... FORD ETIS CLICK HERE

Adding your location may find someone local who could offer assistance.

F-Super, Bluetooth OBDII (ELM) and a MS509 scanners (test subjects required).

ForDiag now available to victims.


#3 raimartynas

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Posted 03 May 2021 - 06:31 PM

Will check it tomorrow.
Today we tried spraying starting fluid for a bit longer then last time, the engine starts and dies instantly, it seems it don't get fuel..

As for instrument cluster it was my bad, I just had to set time for it to unfreeze  :biggrin:

 

As well I have a question about ECU, could it be that somehow those LED shorted it ? And can I use 7g91-12a650-uf instead of my 7g91-12a650-df, they seem both have been made at same year, as well same TDCi 2.0 engine. But I found 7g91-12a650-uf (which is different then mine) for a cheap price and could try to change it myself.



#4 Rekusu

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Posted 03 May 2021 - 09:42 PM

May be a dumb suggestion but if you have up-graded the lights to LED, have you tried 'down-grading' to the bulbs you took out?

 

Of course, if up-grading has caused an electrical issue, it is unlikely that replacing with the originals will instantly cure it, but you never know.


What if the Hokey Cokey IS what it's all about?

#5 stonekeeper

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Posted 03 May 2021 - 09:59 PM

F22 fuse in Passenger compartment is the fuel pump

 

https://talkford.com...mation-mk4-r461



#6 raimartynas

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Posted 04 May 2021 - 07:16 AM

May be a dumb suggestion but if you have up-graded the lights to LED, have you tried 'down-grading' to the bulbs you took out?

 

Of course, if up-grading has caused an electrical issue, it is unlikely that replacing with the originals will instantly cure it, but you never know.

 

Question sounds fair, and yes I did it, first I tried just to unplug LED and yeasterday I put my old Xenon bulbs. But it didn't solved the problem.

 

 

F22 fuse in Passenger compartment is the fuel pump

 

https://talkford.com...mation-mk4-r461

All fuses checked by looking and by multimeter as well. Do you suggest still to change it or what ?



#7 PURPLE_2L_LX

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Posted 04 May 2021 - 11:26 AM

12.44volts at the battery, you should get that on charge before it gets any

lower. Nothing worse than trying to diagnose a fault and a low battery

condition making matters worse.

 

Fuel pressure when cranking?


MK4.5 TDCI 140 Business Estate.

 

MK3 FUSE INFO CLICK HERE ... FORD WIKI CLICK HERE .... FORD ETIS CLICK HERE

Adding your location may find someone local who could offer assistance.

F-Super, Bluetooth OBDII (ELM) and a MS509 scanners (test subjects required).

ForDiag now available to victims.


#8 stonekeeper

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Posted 04 May 2021 - 11:47 AM

 

May be a dumb suggestion but if you have up-graded the lights to LED, have you tried 'down-grading' to the bulbs you took out?

 

Of course, if up-grading has caused an electrical issue, it is unlikely that replacing with the originals will instantly cure it, but you never know.

 

Question sounds fair, and yes I did it, first I tried just to unplug LED and yeasterday I put my old Xenon bulbs. But it didn't solved the problem.

 

 

F22 fuse in Passenger compartment is the fuel pump

 

https://talkford.com...mation-mk4-r461

All fuses checked by looking and by multimeter as well. Do you suggest still to change it or what ?

 

Did you check for voltage at the fuse as well as continuity.



#9 raimartynas

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Posted 05 May 2021 - 12:14 PM

12.44volts at the battery, you should get that on charge before it gets any

lower. Nothing worse than trying to diagnose a fault and a low battery

condition making matters worse.

 

Fuel pressure when cranking?

 

What should the voltage be on fully charged battery ? I thought it's fine 12.4-12.6.

I went today to test fuse and see fuel pressure so when testing a fuse I saw 11.05V on fuel pump fuse but it seems that battery went close to dead so I'm charging it right now. Fuel pressure was 430-450kPa when tried to start the car but as I said battery droped to 11.4V... 
The battery for sure needs to be changed becouse I charged it close to full two days ago and tried 2-3 times to start car for around 10s each time and then kept on ignition for max 15-20minutes. But the car still should start if I charge it and at that time it shows let's say 12.6V or more?



#10 PURPLE_2L_LX

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Posted 05 May 2021 - 02:40 PM

450kpa = 4.5 bar you need approx 250bar to start the car. your fuel pressure

is very low.

 

Is the fuel filter full?  Try bleeding the fuel system.


MK4.5 TDCI 140 Business Estate.

 

MK3 FUSE INFO CLICK HERE ... FORD WIKI CLICK HERE .... FORD ETIS CLICK HERE

Adding your location may find someone local who could offer assistance.

F-Super, Bluetooth OBDII (ELM) and a MS509 scanners (test subjects required).

ForDiag now available to victims.





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