Saab 99 E

Goodevening,

I just joint the site today so I'm finding my way on it.
I've a Saab 99 E from 1972 with a Triumph 1850cc engine (I think because it is not the original engine,
the early models were 1700cc) and (ofcourse) a D-jetronic.

I've 2 major questions although the Saab runs allright;
can anybody check / overhaul my ECU 0 280 000 010 (according to docs 0 280 000 018?) and modify it.
Saab in those days supplied an ECU with and without CO adjustment knob.
Unfortunately my ECU has no knob and the CO is far to high; approx. 6,5%.

Another thing is that my auxilary valve 0 280 140 012 broke down.
I tried to repair it with a bi-pole kit from Sweden but it doesn't work.
Can anyone advise how to fix it ? or does anyone have such a part available ?

Kind regards,
Frank




 

Hi Frank,
a warm Welcome to the forum with your car. Quite rare here...

Following Wikipedia, the engine is the original one for your 1972 model.

The 99E and 99EA were equipped with different engines and different D-Jet-components.
You can download information here: www.bosch-classic.com/de/en/products/veh...rts_and_accessories/

Make sure you search for the 'EA' model. For example, the'E' is equipped with yellow injectors, the 'EA' with green ones.

Your ...010 ECU is meant for the earlier engine.
An ...018 is offered at ebay. (Wait, maybe one user here has one to sell, too...)

Maybe your auxiliary air valve is still available new at Bosch... they write 'discontinued', but not 'sold out'.
But ask for the price before ordering it...

Regards
Norbert

edit: Did you check your MAP sensor for vacuum leaks? Follow the instruction in the compendium. This could be the reason for the high CO.

Hi Frank,

It is seldom that I see Saab engines here on Jetronic.org.

If you would speak German I would recommend Bosch Kundendienstanleitung for your car .  Unfortunately thisis only Prüfwerte. Normally such workshop manual consists of 3 booklets. I should even have them in double copy. I read these documents about your car. There is a section about 1.7 and 1.85 l engine and one about 2.0 l engine. So 1.85l seems original from that reading.

It seems that 1.85l engine was also equipped with 0 280 000 010 ECU with MAP sensor 0 280 100 009 and 2,3 kp/cm² fuel pressure plus yellow (black) injectors. Later it was switched to 0 280 100 018 with MAP sensor 0 280 100 018 and 2.0 kp/cm² fuel pressure plus green (black) injectors. In the very beginning injectors were not color coded and all black.

I do not have the Saab 0 280 000 018 nor the MAP sensor 018 in stock. So I cannot help with that. If I had I would be able to test and repair them. But I never took Saab equipment to my stock as I was never ever asked for it in a workshop. I would have used green injectors. I also do not have your AAV 0 280 140 012. But it is a standard part and repairable. Bosch does not supply any more and it is only Mercedes-Benz who made Bosch manufacture new ones.



 

Hi,

according to Bosch historic equipment list it is 0 280 000 010 for all 1,7 l engines and 0 280 000 018 for all 1.85 l engines. Kundendienstanleitung is not as clear here.

Goodevening Gentlemen,

According to the Saab Workshopmanual, Saab also delivered the 010 ECU and matching sensor in the 1850 models;
please see attachment.

I've a type 2 MAP sensor I think but it was tempered with by judging the screw at the back.
Is it wise if it try to adjust the screw ? It looks to be sealed.

@ Volker; can you check and, preferably modify the ECU with adjustment knob, if I send it to you ?
And shall I also send you the MAP sensor ? It works so you can use the data ?

Looking forward to your reply

Regards,
Frank
 

Hi Frank,
do you have yellow or green injectors installed?
Does your chassis # fit the data in the right column of the Saab document?
Why do you think your map sensor has been touched?
Please send a photo of the seal

Regards
Norbert