Okay guys, my problem still haven't gone away. My 2000 4.6L has the worst pickup in the world. It can barely go up a hill, much less tow anything period.
But it can easily cruises at 50-60+mph. I had a bad plug, replaced it. Bad fuel injector, replaced it. Bad catalytic convert clogged up, replaced it. After all that, its still the same slow molasses when it comes to acceleration. Checked all hoses, no vacuum leak. But it does have a 15psi compression reading...in the low area.

Im all out of ideas of whats causing this.

Anyone with similiar issues ?

 

Which cylinder is giving you a 15psi reading?

 

Sorry its not the cylinder compression, its air compression from the brake booster.
I haven't got around to do cylinder compression test. Going to do it tomorrow once and for all.

DO you know where's the switch to disable ignition when doing a cylinder compression test?

 

Disable the fuel pump from the inertia switch located behind the passenger lower kick panel. Compression test would be your next best bet.

 

Or pull the fuse. Gonna be interesting to see what you find out.

 

Alright, I found the problem. It turns out the whole right bank didn't even get fuel. I attached a Noid light and none of them light up.The whole left side bank worked.

So now im guessing its the ECU itself which caused the problem

 

Question is if I were to buy a used one... would it just work or it needs to be reprogram at the Ford dealership

 

What makes you think a whole banks fuel supply is an ECU problem? I'd start checking fuel lines for blockage.

And Ward disagrees that the 4.6L is the worst pickup in the world It made their "Top 10 Best Engines Ever Made" list a few years back

 

You'll need to find out your trucks calibration strategy....at most the dealership will be your best bet but some autoparts stores sell them also......I've got an independent parts store in my town that does....

Sometimes just unhooking the pcm connections and making sure they're clean and have dieletric grease on them can cure issues like this....make sure you discconnect the battery before doing this......

 

lol, well im totally guessing because apparently the ECU/PCM controls the ignition and fuel injections. But it could be the cam sensor on the right bank that isn't working which not sending any feedbacks to the ECU so it can't tell the fuel injectors to eject fuel!

...clogging the fuel line... I dont think it clogged up because the last time I changed the fuel injectors it came out all over and the fume gave me a good headache.

Im going to change the sensor first...then if that still dont fix, ECU swap just be what it needs.


Question:

I was able to locate the cam sensor on the right bank, its right infront of the engine cover. Is there another one on the left bank ? I couldn't see it but there is a cable going down along the engine.

 

Updated: New sensor installed... same problem. Its down to the ECU itself.

 

Not sure what you changed, -but it wasn't the CPS. The CPS is located, ~ Left Bank (Bank #2), -just below the Cam cover on that side.

Right Bank (Bank #1), you have your Crank Sensor @ the end of the line (Harness). AC above that.

So maybe you disconnected the AC ? Yea, that will fix her up alright

Maybe you should try the second lug nut , Uhhhh , right bank..

 

This guy (JBREW) has got to have a petite brain the size of a squirrel, and the attitude of a teenage queen. Apparently he only knows his own truck and talk out of his *** giving advice to people. (I've read just about every comment he posted on my posts and others)
I have told him to stay out of my post and yet he's still sticking his nose in it.
I think he has a problem. I'll crack a tooth in his mouth. That'll fix him up.

But to help him grow his peanut brain a bit, here's a picture of the sensor:

See the "216" in the pic? Above that is the sensor with the wire coming out of it. Driver side on the timing chain cover.






- Im having a guy who works at a repair shop to bring his shop scanner to read all the outputs monday night. But either way, i've snatched an ECU/PCM and will have it programmed this coming week.

 

Peanut Brain ?

CrapMan,-I surrender to brilliance.

_________________________________

BTW, -



Take that Bufferin Brain

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Seriously,that would be the "left" side, bank 2. ~

 

Kid, stay out of my posts. Go bug someone else who's at your level.


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