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Alright guys time to throw some more money at this and try to fix it, I'm looking on rockauto and I can't find the pip sensor, can anybody help me out here. I don't think the tps is the problem, I started having an issue with my car jerking and it was the distributor leaking spark, could only see it at night and there were no visible cracks. I'm gonna try a new button and cap, new icm and pip sensor. I want this truck running before snow starts flying. I'd like to see it lifted with some 33's next summer.

wde3477

Your symptoms sound a lot like what I experienced on the TPS sensor failure. The readings you get should be continuous through the range of motion, without any dropouts.

Also, have you checked the vacuum line to the MAP sensor to ensure it has no leaks?

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Long time no reply. Im whittling away slowly at this. I replaced the icm two days ago, not much improvement other than it didnt stall on me on the test drive but it a ts like it really wants to.

Now I can fire it up and the idle jumps a couple hundred rpm. It stalled once so i wedged the throttle open a hair to keep it running and after it warmed up it was just jumpy idle no stalling.

I let it sit for about 15 minutes warming up and took it for a spin. It ran ok the first trip around the block but I was totally babying it. Didnt rev over 2500 rpm. The second trip i got it up to 3000 and it bogged down twice. The third trip it tried to die on me several times and it ONLY did it when i pushed the gas petal down fast. Not full throttle or hard necessarily, just a rapid push on the accelerator.

I don't know what to blame next. I want to blame a sensor or something ridiculous like that. I guess it could be bad gas but it had the same issues when the gas was put in fresh. Clogged injectors but like i said its been the same symptoms since day 1.

The pip sensor... Where is that and where can I buy one?

I replaced the MAP sensor, external fuel pump, starter solenoid twice, and the TPS checks out with a voltmeter...

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***update***

After throwing many many other parts at this truck I believe I may have resolved the issue.


The in tank pump.


I pulled the tank in front of the axle, it did look like a new tank with barely any surface rust, still shiney in fact, the sending unit looks new, and the pump looked brand new, but I turned the key and nothing happened, the high pressure pump kicked on but not the low pressure tank pump that I had hooked up sitting in my hand.


I swapped pumps and turned the key and it kicked on!!! I ended up draining about 9 gallons of bad gas which probably wasn't bad the last couple times I had been working on it, I know I put about 5 of those gallons in myself. Poured in 4 gallons and drove it around the block several times. It has an idle issue on startup but the more it runs the better it feels. I'm guessing there is an intake leak somewhere but that can all be ironed out after I get it back home.

Thanks for all the replies. I hope I have the issue sorted out now. After I get it up here to my house I plan on sticking it in my brother in laws garage and dropping the rear tank to replace that pump too, and going to town on the chassis with a paint brush and some POR-15. The thing is used to sitting on pavement, and it is by far the cleanest chassis on an older vehicle of this nature in the state...probably... I'll give the roads a couple weeks to be clear of salt and that dreadful brine before I even try to drive it home, it would be a sin to start rusting it out now after all these years. I work for a company that hauls the brine and salt in from down south in MASS quantities, and that stuff with shrink your boots and gloves(leather) in a matter of minutes if you spill it. I can only imagine how quick it eats through steel when it's fresh...actually I know first hand because I work on my beater commuter cars lol

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Ok so back to square one.

I tried to fire it up the other day and it wouldn't stay running, it stalls as soon as it starts unless you rev it up and hold it at 1,000 rpm.

Today I installed a new CD player I had laying around from a car I scrapped. I don't know what to do with the illumination wire from the truck harness though, the ford aspires use the same stupid type of illumination wire/circuit and when you don't run it to a light or something it will break the circuit and the heat controls and sometimes back lights in the cluster stop working. Maybe I'll grab an LED strip to run under the glove box for floor lighting or something.

Anyway today I kept it running with the gas petal long enough to move it around my yard into a better spot, it was blowing out a little black smoke for a minute.

I think I'm gonna pull the ECU and order a new vacuum hose kit and see where that gets me.

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Picture of my "fleet" lol

You see ford ford Kia ford, I see ford Mazda Hyundai Kia/Mazda.

fltdriver

What was the reading on the new TPS?
should be:
.9-.97v closed throttle
5v WOT

I don't see that you pulled your codes, that would be one of the first things to do.

Have you tested your fuel pressure at the rail?

There are only a couple of things that you should only get motorcraft brand for parts, TPS is one.

FORD TUFF

Have you actually checked the fuel pressure with a guage ? ? You may have a plugged system that i`m starting to think is going to be an epidemic with the gen 8s

Chris_1

iTrader: (1)

From what I just read here, the original TPS was faulty. Did that ever get changed and set properly ?

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Hey wow, I don’t know how I found this thread but it just popped up on my iPad, anyway, issue totally resolved....

It was the fuel pressure regulator. I decided to rip the head off for whatever reason and before I got there I found about half a water bottle worth of gas and however much spilled before I seen it pouring out of the upper intake manifold.

Backtracked put it all back together googled checks for the regulator and diagnosed it was the issue. I don’t remember what year this thread was posted but it’s one of the few vehicles I can leave sit for a month in negative temps and go fire it up and drive it where ever I want to go. Great truck, lots of memories made with the kids on many many fishing trips, hauling loads for scrap, pulling trailers for friends, and hopefully much more to come. I think I want to go ahead and put some money into fixing the worn out shocks and rubber bushings, might get to it some year. Someone who’s enthusiastic about these trucks should compile a good list of part numbers or links to all the bits and bobs and wear parts that are due for a vehicle in service for 30 years, might keep a couple more trucks on the road for another 30 years.

I did have my boys needle scale and paint the underbody with por15 while I had the gas tanks out, I have an intermittent short in the rear tank pump, but I just use the front tank anyway, other than that everything works like it should.

Thanks fellas, I’ll be back for more when I need it!