Date: Wed, 01 Aug 2001 01:55:31 +0100 From: danny <dannynopsamia-espresso.com> Subject: Re: 9000 TPS unit and fuel economy
I removed the Bosch thingy, and after playing with it, I found I got a reading on throttle closed position, and also a reading at fully open. Turns out that the positioning is precise when refitting, so I fitted it back, and have (usually) both readings now. Bloody Haynes manual shows the part, but mentions only one reading measurement, despite it having three spade connectors. Pete Fagg wrote: > I metered the Throttle pot on my 89 900 and found similar results but just > before fully shut you should here a microswitch actuating and that was the > only thing that showed up on the meter as either open circuit or making a > proper contact.I was told that it was some kind of digital pot and this was > right. If this is true I cannot say! > > Peat > 18 900T16 157K > > danny <dannynopsamia-espresso.com> wrote in message > news:3B60B480.B75041A0nopsamia-espresso.com... > > I was afraid someone was going to say something like that :(... > > > > Thanks for the tip, > > > > Regards, > > Danny > > > > http://www.gaggia-espresso.com (a purely hobby site) > > swap Z for above characters in email address to reply > > > > > > > > KeithG wrote: > > > > > Danny, > > > > > > before you 'replace it' check to make sure that the switch is defective. > It > > > may be that the throttle plate cam has worn such that there is not > enough > > > throw to actuate the switch. Probably a disassemble and inspect. These > crazy > > > electro mechanical devices can fail the electrical test sometimes due to > a > > > mechanical fault > > > > > > good luck > > > KeithG > > > "danny" <dannynopsamia-espresso.com> wrote in message > > > news:3B5EF18C.9403E859nopsamia-espresso.com... > > > > Hi all, > > > > > > > > A friend was looking over the car today, both of us trying to find out > > > > why my fuel consumption is high (computer says an average of 20 > imperial > > > > MPG) with a mix of motorway and town driving. We checked for vacuum > > > > leaks, and couldn't find any. We then checked the Throttle Position > > > > Sensor (TPS) and found no resistance at any of the three contacts, > > > > regardless of the throttle position. (we were able to check my > friends > > > > 9000, which has resistance for the same test). I assume this means > that > > > > the unit is faulty. Anyone know where to find a pattern part or if > > > > other vehicles use this same Bosch unit, rather than the full Saab > > > > retail price? > > > > > > > > -- > > > > Regards, > > > > Danny > > > > > > > > http://www.gaggia-espresso.com (a purely hobby site) > > > > swap Z for above characters in email address to reply > > > > > > > > > > > > > > > > -- > > > > > > > > -- Regards, Danny http://www.gaggia-espresso.com (a purely hobby site) http://www.gaggia-express.com (UK advert for mobile espresso) http://www.express-espresso.com (same place, but I can't decide on a name!) (This is going to cost me a fortune in Domain registrations unless someone can help with a good name!) swap Z for above characters in email address to reply
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