pressure sensor != overboost cut-off switch - Saab 900 Bulletin Board - Saabnet.com
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pressure sensor != overboost cut-off switch
Posted by Siegfried (more from Siegfried) on Sun, 14 Apr 2013 09:51:00
In Reply to: Re: are we talking about the same thing?, Landjet [Profile/Gallery]
, Sun, 14 Apr 2013 07:55:46
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where != means 'not equal to'
Landy (and ocn, I may have misunderstood your question),
1) pressure sensor (item #180 on the electrical diagrams, part number 9342064) is a imprescriptible part of Saab analogous APC system. Bentley says it is located behind instrument panel to the left of steering column. It is of unique type and can be sourced either from C900 or early (pre-MY89) 9K Saab or from late 80' Maser (Maserati licensed Saab APC). I think it is of variable resistance type. According to Bentley (page 291-8) its resistance should be about 8-13 ohms at atmospheric pressure.
2) overboost switch (item #144 on the electrical diagrams, part number 8594632) which cuts off fuel pump relay in a case of excessive boost is a part of EFI system and was indeed omitted in LH 2.4+ (but was re-introduced with Lucas CU14 EFI system which was used in EU cars in MY'90-'93). This one isn't quite of variable resistance type since it has only two states: on-state with some milliohms of resistance and off-state with lots of megaohms betweens its contacts. Bentley says nothing about its location, but in Valkyrie (MY '93) it's located right next to the flasher relay under the dash. Yes, it is adjustable and I think there may be some aftermarket universal equivalents for this part.
Hope this helps.
Zig
posted by 188.134.4...
Posts in this Thread:
- APC Pressure Sensor, ocn, Sat, 13 Apr 2013 13:00:12
- Re: APC Pressure Sensor, aka oldsaab, Sun, 14 Apr 2013 13:48:16
- Re: APC Pressure Sensor, Landjet , Sat, 13 Apr 2013 19:12:34
- Re: APC Pressure Sensor, AaronG, Sat, 13 Apr 2013 18:59:31
- Re: APC Pressure Sensor, Cmyles , Sat, 13 Apr 2013 14:13:08
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