406 and V6 engine electrics
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  1. #1
    Fellow Frogger!
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    Default 406 and V6 engine electrics

    Hi to all. Just bought an auto (not the AL-4) '98 V6 sedan as parts for my 2.1 dsl wagon. The engine used to go fine till the black 30x20x13 mm French made Facon 2.2 micro farad capacitor that is part of the engine wiring loom began to fall apart where the earth connection bolts to the rocker box. The live side of the Facon unit is the 5th wire of a female plug that connects into its other half at the cam belt end of the ignition module unit - the other wires ate 3x orange and a pink. The previous owner then decided to simply put a conductor straight to earth only to find that whilst attempting to start the engine the wire eventually got hot enough to melt, and cause possible unknown other damage.
    As it is now a renewing of the earth terminal by soldering to the Facon may restore it to working well and the 'old girl' may come to life. Does anybody have any any idea as to the potential damage caused by such an overload.? There is no sign of heating to any of the other 4 wires, and the Facon is common to the pink wire.
    Also of interest is that this vehicle has travelled 630,000km, during which time the alternator has been replaced as has the radiator fans. The original 4HP20 transmission died and was replaced with an AL-4 which recently developed a leak that drained it and resulted in the 'good ole girl' being traded. The owner for most of the k's got up to 110,000 on Michelin and 90,000 on Pirelli with the economy of 900 highway kms on 65lts and adamantly says "best car I ever owned!"

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  2. #2
    Fellow Frogger!
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    If you're talking about the capacitor I think you are it's just a noise surpressor and shouldn't stop the motor firing... Have you gone any further with diagnosis? Got spark? Got fuel? If neither, got power?

  3. #3
    Demannu-facturing! Demannu's Avatar
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    Quote Originally Posted by kelpiebat View Post
    Hi to all. Just bought an auto (not the AL-4) '98 V6 sedan as parts for my 2.1 dsl wagon. The engine used to go fine till the black 30x20x13 mm French made Facon 2.2 micro farad capacitor that is part of the engine wiring loom began to fall apart where the earth connection bolts to the rocker box. The live side of the Facon unit is the 5th wire of a female plug that connects into its other half at the cam belt end of the ignition module unit - the other wires ate 3x orange and a pink. The previous owner then decided to simply put a conductor straight to earth only to find that whilst attempting to start the engine the wire eventually got hot enough to melt, and cause possible unknown other damage.
    As it is now a renewing of the earth terminal by soldering to the Facon may restore it to working well and the 'old girl' may come to life. Does anybody have any any idea as to the potential damage caused by such an overload.? There is no sign of heating to any of the other 4 wires, and the Facon is common to the pink wire.
    Also of interest is that this vehicle has travelled 630,000km, during which time the alternator has been replaced as has the radiator fans. The original 4HP20 transmission died and was replaced with an AL-4 which recently developed a leak that drained it and resulted in the 'good ole girl' being traded. The owner for most of the k's got up to 110,000 on Michelin and 90,000 on Pirelli with the economy of 900 highway kms on 65lts and adamantly says "best car I ever owned!"
    The engine will run fine without the suppressor capacitor, it is just to make the radio sound less static-y when the signal is low. Cut the wire off cleanly and insulate the end.

    That wire has a 12v feed from the double-relay to an un-fused section of the power distribution block (LH side of the engine bay, next to the battery). Use a multimeter to check for 12v on pin 4 of the ignition module plug (with the ignition on).

    If it's not there, turn the ignition off and check for continuity between pin 4 of the ignition module plug and pin 13 of the double-relay connector. If there is no continuity, replace the wire. If there is continuity, then continue.

    Turn the ignition back on and check for 12v at pin 8 of the double relay. If there is 12v there, replace the relay. If not, replace the wire from pin 8 to the power distribution block. The wire runs through the loom across the engine mount, in front of the intake manifold, down the side of the engine and to the starter motor loom to the battery.

    If you can't get it running following these steps, report back here for further diagnosis
    Scotty

    Melbourne - Dandenong Ranges

    1956 Peugeot 403 - 'Francois' - resto project

    1969 Peugeot 504 - 'Pascal' - daily driver project

    1970 Peugeot 404 Utility - 'Brutus' - resto project

    1978 Peugeot 604 - as yet unnamed - V6 on straight LPG

    1987 Peugeot 505 - as yet unnamed - project car

    1999 Peugeot 406 Coupé - 'Chloe' - 5 speed manual

    2011 Peugeot 3008 XTE HDi - 'Zoe' - hatchback on steroids

    2014 Peugeot RCZ - 'Remy'

    1999 Range Rover 4.6 HSE - 'Grover' - tow car

  4. #4
    Demannu-facturing! Demannu's Avatar
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    I also have to ask.... what makes you think it has an AL4? There was never any AL4 gearbox made with the correct bell housing pattern to mate to the V6 engine. Such a beast would have to be a very expensive custom job. Or are you talking about the 2.1 diesel?
    Scotty

    Melbourne - Dandenong Ranges

    1956 Peugeot 403 - 'Francois' - resto project

    1969 Peugeot 504 - 'Pascal' - daily driver project

    1970 Peugeot 404 Utility - 'Brutus' - resto project

    1978 Peugeot 604 - as yet unnamed - V6 on straight LPG

    1987 Peugeot 505 - as yet unnamed - project car

    1999 Peugeot 406 Coupé - 'Chloe' - 5 speed manual

    2011 Peugeot 3008 XTE HDi - 'Zoe' - hatchback on steroids

    2014 Peugeot RCZ - 'Remy'

    1999 Range Rover 4.6 HSE - 'Grover' - tow car

  5. #5
    Fellow Frogger!
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    Coffs Harbour, NSW Australia
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    Hi Dimannu and angru; many thanks. Since writing the first words which relied on information from the 2nd owner who had the car when the original auto was changed and was of the opinion that a different unit had been fitted I've compared the tranny in it now with service box and it is definitely the std 4HP20. As suggested the Facon unit has been given the chop resulting in an engine that just purrs. In seeking to verify the worthiness of the HP20 following evidence that it slowly petered out of drive over a distance of 20kms whilst lots of white smoke was emitted from the rear, it was necessary to check the oil level but that has proven to be difficult because there is only a hole and no dipstick. There appears to be a wad of cloth a couple of inches down the hole and the usual sandy oily grit around and in the hole. Hopefully, with the addition of some oil the car will have enough drive to warrant attention to curing the oil leak. If not perhaps a swap to a manual g'box could be considered, if feasible.
    The 2.1 diesel is std manual and goes well.

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