A different TSP!!!!

[ryf]

if anyone has a '91 Crown vic, what is the throttle body size, I think its a simple issue. the TPS on a crown vic increases voltage probably less per increment of movement for the swing of a bigger throttle body. if the TPS has more increments it would mean one of two things would happen.

1. the TPS is sending not enough voltage creating a lean condition

2. the TPS is actually sending identical information on a more precise scale, meaning the voltage is still correct (air/fuel mix then correct) but more precise to the TB.

a simple way to show the possibility might be, for trucks ford decides they don't care if it wastes gas or is a little inefficient, so they use a cheaper to mass produce TPS. they decide since cars are a more "refined" class of vehicle, to maintain efficiency and best possible gas mileage to compete with other manufacturers, they use a more expensive to produce TPS thats more precise alowing for a better response through the RPM range. I'm not saying that thats what happened, but its very possible given the way vehicle companies are nickle and diming the hell out of production cost. I would definitely like to see what its putting out on a voltmeter through the throttle pull and see if its a more refined same scale or a different scale alltogether..

PS

perhaps if you just checked starting and WOT voltage on each first it would answer the "is this bad for my engine" question

 

[410Fortune]

again we are back tom somebody with both TPS's getting out the multimeter and doing a simple test. This will put all idea's to rest and finally give some results on paper.

 

[Josh]

Well I know I was supposed to do it. I got a little busy. I did drive to a coworkers house the other day about 20 miles down the freeway. At 65 the motor was turning about 3000 RPMs. So I didnt think it would be a good idea to keep it on. Then today the retainer nut on the spindle spun off on the drivers side and the front end got loose. The retainer nut boogered up the threads enough that I can't get the inner nut off or the outer nut on :fire: The bearings are full of some type of solid material and to top it all off the balljoints are shot! I love my truck but she is really pushing it! Back to the TPS. bottom line don't do it. I think it will hurt the tranny like someone was telling me earlier. Oh yea, I did notice a difference in power when I went back to the stock one. She's a turd again. On top of this crap, in the past 2 weeks the crank pulley flew off, the steering gearbox sprung a leak and puked in my driveway, and the high side hose had to be replaced

 

[TheRookie]

Usualy with a good quality hub socket (type with the ring around the teeth) you can get the inner nut off with an air gun no matter how bad the threads are. It will take a while but with the right stuff it will come off. Either way you need a new spindle. This is a great way for everyone to learn that you GOTTA keep your eye on those things. They do come loose, especialy with larger tires. The drivers side does this more often than the pass but keep checking BOTH. I imagine someone on here that has done an sas has a spare spindle layin around. Just think of what coulda happened had you been on the highway and lost the wheel.

 

[Josh]

I saved the spindle. The outer nut only had the a little bit of the first thread messed up. The spindle was the same. And yes I did go down and get the socket for 10 bucks. I did not know they existed, I've just been using a hammer and a heavy screw driver to tighten them up. I used the torque wrench this time and got the jam nut to 150 ft lbs. That should be enough. The ball joints were due. My truck has 240K on it but I don't know if the other owner replaced them before. The bottom one was toast. I will look at the other side this week. I am thinking to make this a quarterly check and after major road trips.

 

[kingzion]

It has been awhile since I replied to this post and I apologies. The end result of this question is simply faulty TPS. It seams that what ever was wrong with the sensor was indeed tweaking performance until it really failed and I was up s..t creek.