#1 [url]

Feb 18 09 3:45 PM

QUOTE (MJG @ February 17, 2009 11:10 pm)
However if you want to check the TPS I have included ops check and adjustment. What makes you think you have a problem with one of these?


The checkout and adjustment proceedures for the TPS are:
1. Disconnect plug from TPS and connect a digital ohm meter between terminals A and B of the sensor.
2. Turn the throttle lever to the Wide OPEN Throttle (WOT) position and check the resistance reading on the multimeter. The reading should be approximately 5K ohms.
3. Turn the throttle lever to the fully CLOSED position and check the reading on the multimeter. The reading should be below 1 ohm.
4. If the resistances are not within the specifications, adjust the TP sensor as follows:
- Loosen, but do not remove, the TP sensor screws.
- With the throttle lever in the closed position, adjust the TP sensor until the multimeter reads below 1 ohm.
- Turn the throttle lever to the WOT position and check the resistance. The resistance should be approximately 5K ohms. If the TP sensor cannot be adjusted to specification, the throttle body must be replaced.
5. After the TP sensor resistance readings are to specification, tighten the TP sensor screws to 1.6-2.3 Nm (14.2-20.3 lb in) .
Connect the TP sensor electrical connector.

Nice quote from the SM manual but it dont work. fordaspire/angryfire.gif

35 years in electronics and I can tell you there aint no 5k single turn potentiometer made that you are going to read that low end resitiance on. It will just apear as a short.

I tried and tried and tried to make the instructions work (despite my electronics background) but it just doesnt. I'd love to say go by the manual always but on this one I am 99.9% sure its a typo that is repeated over and over. You just cant do what they call for. I even tried diffrent TPS's and diffrent cars. By the time the pot reads under 1 ohm you cant set the high end requirement.

One thing for sure that is rock solid advice, before you move that TPS - Mark it! That way if I am right and the procedure to set it is bogus you can at least put it back where it started from if it is not the problem. fordaspire/banana.gif

Ziggy 1 --- '95 white 2dr, 5sp, a/c added, 252k, 43 top mpg (still got 'em)
No Name --- '95 teal 2 dr, 5sp, 98K, bad clutch, sold it b4 I named it
Ziggy 2 --- '95 white 2dr, 5sp, a/c 147k split rear seat, 49.3 top mpg (deceased, mortally injured in towing accident 2008)
Kermit --- '95 teal 2dr, 5sp, a/c 103k, upgraded interior package - the daily driver now
(Had 2 1988 Festivias in the '90's. Over 200k on them too)

All pulled "Trapper" the '89 kamparoo camper on the back roads I should'a been drivin' my jeep on (4x4 aspire??)