Misfire

[damien 22 1 Cars]

my 205 started misfiring out of the blue over the weekend, it was just a little spat and it had never done it before so i didnt take much notice of it.

now over the last few days its been happining more and the "spat" seems to be lasting longer as if to say the problem is getting worse.

it seems to do it when hot/cold and around 3.5k weather i put my foot down or i slowly climb up the revs.

the oil/engine temp seem fine, the coolent level/oil level seem fine and she starts/runs fine until i hit that rev range.

i service her every month (new oil/plugs) and she has just passed 172k.

 

anyone got any idea what it could be?, whatever it is its getting worse the more i drive the car.

 

thanks

[Tom Fenton 1,525]

Ignition amp or air flow meter.

[damien 22 1 Cars]

i would of thought the AFM would make it idle rubbish and run bad all the time?

 

where abouts is the ignition amp on the engine?

[DamirGTI 325]

As Tom said , could be ignition amp (it's my favourite trouble maker ! when it comes to ignition system problems..) or dizzy signal cable breakdown , coil perhaps ... but check the usual ignition bits firs : plugs , leads , dizzy cap , rotor arm , coil tower for signs of rust , ignition amp connector ...

 

Rgs !

Damir

 

(the ignition amp. on the Ph1 Jetronic cars is mounted on the aluminum plate next to the coil on the LH front inner wing , near the battery ... on the Ph2 Motronic cars it's also on the little alu. plate which is bolted on the RH inner wing near the timing belt..)

[Simes 248 2 Cars]

Light reading

[damien 22 1 Cars]

Light reading

 

thats for that, was a intresting read.

 

will sorce a bosch one from my local ECP and let you know how i get on

[Vz_ace 0]

my 205 started misfiring out of the blue over the weekend, it was just a little spat and it had never done it before so i didnt take much notice of it.

now over the last few days its been happining more and the "spat" seems to be lasting longer as if to say the problem is getting worse.

it seems to do it when hot/cold and around 3.5k weather i put my foot down or i slowly climb up the revs.

the oil/engine temp seem fine, the coolent level/oil level seem fine and she starts/runs fine until i hit that rev range.

i service her every month (new oil/plugs) and she has just passed 172k.

 

anyone got any idea what it could be?, whatever it is its getting worse the more i drive the car.

 

thanks

 

my Mi16 has had similar symptoms, then i replaced distributor cap, ring and ignition leads withn new ones, and problems have gone.

 

in the second case- the AFM has been slightly (-the hose) disconnected (accidentally) from THB.

 

i hope, it will help in some way;)

 

regards Vladimir, Slovenia

[1 FAT PUG 39]

could be lambda sensor on exhaust as i think thats whats gone on mine, mine was spluttering and then getting a bit worse and tonight it just cut out alltogether and refused to start, disconnected it and it started up for a couple of seconds was running but well lumpy

[SeanO'Connor 0]

We have had lots of rain lately, could be dodgy leads, start it up at night and look for arcing from the HT lead either to the engine or each other. older cars do not like damp driving conditions.

[damien 22 1 Cars]

quick question, went to my local ECP for a bosch ignition amp today and the chap said there is 2 different types listed, a 7 and a 7 pin. which one do i need?

 

thanks

[DamirGTI 325]

Did you mean 6 and 7 pin ? either one will do , they will both work as long as they're MTR 01 type

Just make sure that you don't buy some crap brand , like Intermotor the Bosch ones are the best ..

 

Rgs !

Damir

 

This is Bosch part No. for 205 GTi amp , it'll be stamped on the front side : 0 227 100 123

However this ones should also work , as replacement item if you can't source 123 one :

0 227 100 102

0 227 100 110

0 227 100 111

0 227 100 112

0 227 100 148

1 227 010 002

1 227 010 008

Edited September 16, 2008 by DamirGTI

[damien 22 1 Cars]

sorry he said 5 or 7 pin, he said that he would have to order it in so i would have to pay up front.

 

i'll take them part numbers with me, thanks

[DamirGTI 325]

Ok. then the 7pin type (or the 6pin one ..) , the difference in between the 6 and 7pin amp is cos 7pin type haves RMP out signal (and that one is the last pin No.7) which isn't needed for 205 1.6/1.9 engine managements (i have Jetronic and Motronic car and they both work on 6 or 7pin type ignition amps..) .. on the wiring side they all have 7pin amp connector but this pin No.7 is blanked - without wire/terminal

 

MTR 01 type amps are intended for "pick up" ignition systems

MTR 02 ones are for "hall sensor" ignition systems

 

Damir

[damien 22 1 Cars]

little bit of a update, got the bosch one on saturday so i set on replacing it.

 

 

apon removing the old one i noticed the wiring seemed alittle worse for wear so i started stripping it back

 

 

i ended up finding a break in the wiring so ive ended up replacing the wiring which ended up taking me all day

 

 

on the bright side once i put her back together i took her for a drive down the road and she is running fine now no more missfire but im unsure if it was down to the wiring or the amp.

Edited September 21, 2008 by damien

[GLPoomobile 958]

Now stick the old amp back in and see if it is OK. Then you'll have 2 working amps, so one can be a useful spare for the future.

[DamirGTI 325]

That one is just a shielding wire , it shouldn't have anything to do with this misfiring problems .. the red and the green one on the 3pin connector are important (one is neg. and other is pos. signal from the dizzy pick up coil ..)

 

Make sure that you use thermal transfer paste/jelly when ever you disturb the ignition amp. - heat sink paste/jelly must be re-applied at the back of the amp surface cos it'll start to overheat and in the end can burn out ... so you could end up with the same problem again !!

 

Rgs !

Damir

Edited September 21, 2008 by DamirGTI

[damien 22 1 Cars]

it came with a little satch of jellyso i used the lot on the back of the amp

[DamirGTI 325]

Nice one ! you've done a good job then

 

Rgs

Damir

[wardy18 33 1 Cars]

im so glad i searched and found this info as im about to re wire and tidy up my ignition amps wiring and fit a new amp, never new you needed heatsink paste, lucky i have a whole tube from a PC re build, gonna check the part numbers too

 

great bit of resource

[wardy18 33 1 Cars]

just looked at the one i bought off ebay before i knew about any of this info and it has no manufacturer make or numbers at all, just numbers 1 - 7 relating to the pins

 

come in a see threw bag with:

 

15010

Peugeot

Electronic

Ignition Module

 

Any ideas?!

 

Simon