20 Most Recent 1990 Peugeot 405 - Page 3 Questions & Answers

Sounds like a blown cylinder head gasket between the water and oil passages and galleries. Is the amount of oil significant..not just a hint of a film? Do you have any sign of creamy looking 'mayonnaise' on the under side of the oil filler cap and entrance? This would be sign of the reverse i.e. that water had got into the oil. The oil in the engine is driven around the galleries under pressure, certainly more pressure than the coolant, so if there is a connecting leak oil will be forced through it into the coolant. The best way to make sure is to have your coolant system pressure checked by you local garage when the engine is really cold. With the engine off and the oil filler cap removed a leak will be indicated by the coolant pressure dropping slowly (as water is forced through the leak back into the oil system). Also monitoring the pressure of the coolant when the engine is started from cold will also reveal a leak. The coolant is at normal atmospheric pressure when cold and only when the engine gets hot does the pressure within the coolant system rise (somewhere between 7 - 10psi depending on power unit). However if there is a leak the pressure of the coolant will rise rapidly as the oil system reaches pressure quickly, in other words the coolant system will be forced to the same pressure as the oil system through the leak. The remedy is to renew the head gasket.

It may be the ignition switch has too much wear and is not providing current to the blower motor.

If it was a relay it would not work at all.

Check that first by wiggling the key until the motor starts if it does not then check your relay, and check for current at the motor at all speeds.

yes coil pack ,renown for this fault ,but a nice set of wheels all the same

should be a cover that snaps off around the tail light on the inside of the car

Inlet - 0,15 mm cold and exhaust - 0,30 mm cold

hi, dont tell me then after it has done this its ok for the rest of the day, this is a common problem with all peugeot 405, i have worked on loads that have had this complaint the only thing you can try is changing the gear box oil or just topping it up can help but other than that their isnt much you can do this is a very common fault.

Let me know how you get on or if you need further assistance ok

This may be of no help but your owners manual in the glove compartment will tell you.

The cabin fuse box is integrated in the glove box. Open your glove box and on the door side you'll see a part-box with a big plastic screw on it. Move this screw to 90° and open the cover of fuse box.

Either the water pump pulley is failing or cam tensioner, its quite common on peugeots engines it can be fixed but its a pain to do if your not mechanically minded. the engine mounts have to come off. It shouldnt be expensive to put i the garage.

dont drive it though it may snap and wreck the engine.

under the bonnet on the back of the mechanical pump there is a unit held in by 2 bolts
remove this unit and on the end there is a tiny filter
this will need cleaning because when the lift pump brakes down tiny parts of it get sucked up through the pipes and clog the filter
it may be best to feplace the fuel filter aswell

you will be better of replacing the unit rather than repairing it this will ensure there is no chance of damaging ecu

they had problems with wiring under where the hood folds in to wires sometimes get caught and brake

remove tin cover from center of hub
use 30mm socket on a strong arm to remove nut
if re using old nuts only do so if they have only been staked over once and that you have swapped them from left fo right

there should be a key switch inside the car somewhere you need to turn it to the off position with the ignition key
(it will probably be some where on the dash, in the glove box or center console)

could be a fault on the diesel valve on top of the injection pump

there is a few ways of doing thes the easiest way being using locking pins
you bont have to go and buy a set of locking pins you can use 3 m8 (13mm headded) bolts and a 5mm allen key

there is a hole in the cam pully and 2 holes in the injection pump pully and 1 in the fly wheel

i suggest you lock the fly wheel up first
the hole is located under the starter motor on the front of the block
insert the 5mm allen key and get someone to turn the crank pully clockwise until allen key engages into the fly wheel

the hole in the cam should be at about 25 past
(if it is at 10 to then you neet to remove the pin from the fly wheel and turn the crank 1 full turn)

when the hole is inthe right place you can insert a m8 bolt and wind it in to the head

with this now lined up you should be able to fit the other 2 m8 bolts into the injector pump pully

with this now done your 1.9 tdi engine is timed up

it will probably be just to the right of the oil filler you need to undo the 4 allen key bolts and remove the housing lid the filter should be inside. when removed undo the drail on the bottom of the housing and let the diesel drain off then tighten drain. fit new filter but before refitting the lid work the primer pump until the fuel comes to the top of filter. refit the lid and tighten 4 bolt. pump primer then start car

send me your E-mail. I.ll send to you picture

am sure you have not changed the winder since you bought the car.for the first time it is alway difficult getting it out except those that are skilled.however, there is a clip that makes it so firm.