1969-1984 [Subscribe to Daily Digest] |
 | [Main Saab Model 99 Bulletin Board | BBFAQ |
Prev by Date | Next by Date | Post Followup ]
Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
Re: d-jet owners Posted by DougM [Email]  (#211)  [Profile/Gallery]
(more from DougM) on Sun, 16 May 2004 07:14:02
In Reply to: Re: d-jet owners, Kevin, Sat, 15 May 2004 01:46:25 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Looking through the wiring diagram for '73, all four injectors have their own ground wire, which all are grounded in the engine bay on the tab off the battery tray. The throttle position switch(middle pin), the wire from pin 11 of the ECU, and the temperature gauge(coolant), all ground at the same point also.
I see no benefit of the machine as far as "tuning" the engine. Only one test is done with the machine and ECU hooked in-line while the engine is running, and that's to measure what the injector points are doing. It is very useful to test all of the components and measure their voltages and resistance, and if any are not within specs, then it helps to pin point the problem(which it did in my case).....and I was mistaken in my first post, the test procedure is six pages long, not four.
It was easy to forget I had the machine all those years. My 74EMS ran great for all the years I drove it daily, and then it sat on blocks in the garage for 6 years. I did actually use the machine sometime back in 1990 after I bought it, but my brain couldn't follow the program in the manual for it, so I just never hooked it up again. Then after my buddy and I closed the shop, he took the only early manual we had, so I no longer had the program to follow. Not until I got a manual from Bob Johnson two years ago, did I have access to the info again. Then I parted out the 74 and dumped all the parts into the 73 body, and the car still ran good up until 3 weeks ago. Hence me finally needing the machine, though I had my doubts during the test procedure that the unit actually worked. Maybe it was also part fear of electrical stuff, as my brain gets mushy when I try to do that type of work.
Would this machine even be useful for other cars which used d-jet, like mercedes, porsche, VW, and volvo? Or were there wiring variants and pin variants between other makes of cars? Not to mention there probably aren't a whole lot of cars even running d-jet systems anymore. How many who post on this board have a d-jet car? Ten at the most?....10 might be pushing it...me, Kevin, JasonS,.....I stalled on three names..:)
posted by 68.68.16...
, Fri, 14 May 2004 20:44:04, Sun, 16 May 2004 07:14:02 <-- Viewing This Message, Wed, 19 May 2004 13:53:35, Sun, 23 May 2004 11:16:32
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
 |
 |
 |
 |
 |
