Pulldown resistors for TPS MAP

[Bruce Plecan]

-----Original Message-----
From: Walter Petermann <corsaro at brokersys.com>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Monday, August 03, 1998 3:23 PM
Subject: Re: Pulldown resistors for TPS MAP


>Bruce,
>what was wrong with using the pots?
>Ignore if this has been covered, just taking a few
>minutes away from work (waiting for glue to dry...).

My concern is ruining the ecms.  Just I got a real budget, and this
could get expensive.   For the several minutes so far noting seems
wrong, but I plan I spending many long hours at this.
Cheers
Bruce
>
>Walter
>
>Bruce Plecan wrote:
>
>> The ecm supplies a 5v signal to the TPS, and MAP.  The MAP is
>> a strain guage type device with a couple transistors.  What is inside
>> a TPS, I don't know.  The TPS needs to return a signal from .5v to
>> 4.9v (.5 being idle). to the ecm.  The map at engine off is like
>> 4.9, idle 2.v ish..
>> Appreciate a hand
>> Bruce
>
>> >
>> >Bruce Plecan wrote:
>> >> Now, that we know there is pull down resistors, what do I do with
>> >> the 5K pots that I've been using for TPS and MAP signal inputs?.
>> >> I'm over my head here so I need a item by item explaination.
>> >> ie., a lot more specific than saying, buffing the output with an
op-amp.
>> >
>> >
>