[miki_com_au]

yup, , , i looked at a lot of fpr threads but unable to find answers to my specific situation...

i have a 1990 420se - old fpr =

003 545 25 05 with pins on

31 | 15 | 87 | 87H | blank | blank |
50 | TD | 30 | 87K | 87V | tf |

[02] KR0002 KPR

05 3702 40

~~~

reco'd one that i picked up and mech assured me was correct is missing a pin (87H)

002 545 16 05

31 | 15 | 87 | blank | blank | blank |
50 | TD | 30 | 87K | 87V | tf |

8zyl 6000/min KVS

89 84 23 88 M06 Kickd.

~~~

do i have the correct fpr for my model?

what is the 87H pin and what does it do?

 

[MBL87560SEC]

Hi there,

87H feeds the Heated Oxygen Sensor.

Cheers, MBL

Attempted to upload schematic twice already. Failed on the benzworld server end.

Look on your CDs under Electrical > Fuel Delivery.

 

[MBL87560SEC]

Still can't do a photo....


DSUpload.UploadedFile.2 error '80004005'

Can't open file for writing.

/forums/forums/attach-file.asp, line 80

 

[miki_com_au]

many thanks for your kind response

must get in contact with my cousin in stuttgart and a mechanic for mb for donkey's years!!!

spent 7 months there (too many moons ago to recount - that and senility lol) but vividly recall mb car markets for whole or parts sales in open air car parks

 

[MBL87560SEC]

schematic

Still cannot do. I get the same error from the server as I did yesterday.

 

[MBL87560SEC]

Schematic

 

[miki_com_au]

thanks for the schematic

would the heated oxygen sensor / missing pin on the reco'd fpr cause the engine to idle roughly???

seems that ever since i got the reco'd fpr the engine idles a bit rough and car does not run as smoothly

frequently, when i need some extra power, it takes a few seconds of pressing accelerator firmly before car will speed up

any thoughts???

thanks