adj. TPS lost power

[NavySVO]

i have a spare vam and tried it with no luck

But did you use the procedure? If you have bad wiring, the procedure will show it.
Just throwing parts at it isn't the answer.

[dpmeeks]

no, i didnt use this procedure, ill check it out.

I did do a sweep on my TPS, values went up smoothly, throttle closed .090 and WOT 4.66v so i guess it good

[Dave S]

Have you tried a different TFI module?

I had one that when it started to go bad, it ran like *&%^ for about 1-2 weeks, then finally quit working altogether.

[dpmeeks]

naww dave i havent done that yet, theres been a couple of times the car acted like it was going to die like it ran out of fuel, i would press the pedal and nothing and then it would go again. Im trying not to just throw parts at it guessing, that gets expensive..

[Dave S]

naww dave i havent done that yet, theres been a couple of times the car acted like it was going to die like it ran out of fuel, i would press the pedal and nothing and then it would go again. Im trying not to just throw parts at it guessing, that gets expensive..

You're more than welcome to swing by and try one of the TFI modules off one of my SVOs to see if that is what is causing your problem.
Racerboy42's SVO was doing something kind of similar to what your car is doing; turned out to be his coil (and several of us had a *$)% of a time figuring it out). You can try a coil too if it isn't the TFI. Let me know.
Dave

[dpmeeks]

thank you dave !!

today i took the TFI up to A-Zone and they tested it and it showed to be good. I had him re-test it like 10 times to get it good and hot. I took the coil off and took it up there and per there specs it tested good and we took one off the shelf and the readings were almost identical so i assume its good.

The only thing left is the PIP . what do you guys think ?

[Bruce]

Did you fill it with fuel the day you worked on it? It maybe just a lack of octane. I haven't been able to get good gas for a while now. Needs booster for having serious fun!

[dpmeeks]

no i didnt, i only buy BP fuel and its usually never had a problem.

I went ahead and got a new PIP, cross you fingers

[dpmeeks]

timing belt slipped ??? PLEASE HELP

Ive been having nothing but issues with the svo lately and honestly im about to drive ( or push ) it into the river.

Anyways, it seems like the more i mess with it the worst it gets. I had a issue with it losing power after setting the TPS and base idle. Since then i have checked or replaced:

-Fuel pressure is good
- New TFI module ( today )
- new spark plug wires ( today )
- new PIP ( today )
- motorcraft plugs gapped at .28
- new fuel filter
- new in-tank fuel pump and hanger assy.
- checked intercooler hoses ( good shape )
- checked coil and its good
- taped up any bad wiring i could find

After installing the new PIP and plug wires i took the car for a drive and doing so it started missing badly and then died. It would not restart. I had the TFI checked earlier today and it showed to be ok, but, i went ahead and got a new one thinking since now it died and wouldnt restart. Still wouldnt start. Im getting spark but it looks kinda weak ( yellowish ) I decided to check the timing marks on the crank, cam and the rotor on the dizzy was pointing at no. 1 and everything lined up. Set the dizzy with my timing light and the spout disconnected at 10deg.

So, i decided to loosen the dizzy and start moving it around and i can turn it counterclock wise as far as it will go and the car will try to start and run. Thats far away from where i had it when i re-installed it today and timed it. Could i have installed the dizzy 180 deg out ? How can my marks line up but the timing for the dizzy be so far off ???? When i had the dizzy out to replace the PIP the gear looked good.

[svobud]

stop creating a new thread until you have actually FIXED the problem and then have an entirely new issue.

[JeffW]

Did you mark the distributor and direction of the rotor when you pulled it out? I don't think the PIP was your problem anyway. The car will usually die randomly and sometimes not restart when they are going out.

Why are you replacing parts that you previously tested good? You said the Coil and TFI were both ran repeatedly on the tester.

Your biggest problem now is that you have changed so much who knows what new problems you have introduced into the equation.

You need to start back at zero... fix your timing issue, check all sensors using the methods provided, make sure your fuel pressure is correct (at idle and driving). Work from there...

[dpmeeks]

yep i marked the dizzy and dropped it back in after installing the PIP and the car started right up, took it for a drive, then it died and wouldnt restart.

As far as replacing parts that tested good, the TFI was the orig. on a 74k mile car and when we tested it, it did fail the "threshold" part of the test once and since so i figured it finally crapped out.

The coil all you can do is check the ohms and it tested good. Im gonna re-align all the timing marks and go from there since i can move the dizzy and the car will try and start..

[Dave S]

So, i decided to loosen the dizzy and start moving it around and i can turn it counterclock wise as far as it will go and the car will try to start and run. Thats far away from where i had it when i re-installed it today and timed it. Could i have installed the dizzy 180 deg out ? How can my marks line up but the timing for the dizzy be so far off ???? When i had the dizzy out to replace the PIP the gear looked good.

What does the auxillary shaft gear look like?
After you take your SVO out and it dies, will it restart after it cools down (something is getting heat soaked)?

[Alex L]

-Fuel pressure is good

when did you get this fixed? because

I checked the fuel pressure, ( i did install a new fuel filter yesterday ) at idle its 32psi, unplugged the fpr- 42 psi, and at 15psi boost its about 52psi

aint right. which makes :

- New TFI module ( today )
- new spark plug wires ( today )
- new PIP ( today )
- motorcraft plugs gapped at .28
- new fuel filter
- new in-tank fuel pump and hanger assy.
- checked intercooler hoses ( good shape )
- checked coil and its good
- taped up any bad wiring i could find
[blah blah]

completely invalid troubleshooting steps.

Set the dizzy with my timing light and the spout disconnected at 10deg.

I checked the timing its 10deg spout out and 24deg spout connected

im not sure about the TE ECU offhand, 24 deg seems a bit retarded, and i know the LA3 idles spout in @ 30 deg adv.

lean fuel, and retarded timing under boost would provide those symptoms that are plaguing your car. stop swapping parts until you confirm everything else is kosher, its just adding more variables to the issue.

[dpmeeks]

Alex.. as far as the fuel pressure, i can decrease the boost down to 10lbs which i should have 52lbs fuel pressure ( which i do ) and the problem is still there. The stumbling.

I got the car running again, i had to pull and redrop the dizzy..

So what do you suggest on the trouble shooting steps i should take ??

I did confirm everything else was kosher.. i used a fuel press gauge for the fuel pressure, i used a timing light for the timing, i had the TFI checked on a machine, i visually verified the timing marks, im not quite following you on this one..