Fuse F32 keeps blowing out.
the truck starts fine, about a minute later the wrench pops up and the truck stumbles bad.

The Fuse F32 has on it

1. EVAP canister purge valve
2. AC clutch relay in the Aux relay box
3. EVAP canister vent solenoid
4. EGR module
5. PVC vlave
6. Cam position sensor
7 HO2 sensor 11
8. HO2 sensor 12
9. MAFS / IAT sensor

i tried unplugging the evap purge?( above master cyl), maf, and egr. still blew fuse.

i let the truck run for 30 seconds and the fuse was burnt, so i dont think it is the o2's

going to try the a/c clutch

what else could it be<<?>>

wheres the vct solenoid plug, i hear this is common

 

Check the wiring harnesses for the O2 sensors. They like to get onto the exhaust manifold and get melted.

 

yeah i examined them, the wires look fine and not touching the exhaust. maybe ill try installin the old ones just in case

 

edit: i dont have VCT.
O2 seem like the common culprit

NOBODYS got any advice????
fyi this is the PCM fuse

 

Hmmm, "install the old ones"? What's the whole story? Did this start after installing O2s? If so, I think you have your answer.

No matter what, sounds like something is shorting to ground.

 

Agreed....

 

I had the same advice you shot down, wiring harness to the O2 sensors.

On the 97-03 is seemed to be on the passenger side, had to remove the inner wheel well liner to see it best, as you had to follow the wire up, and turn it 180* to see the burnt part.

Now I have the same question as IntRiniTy, what do you mean install the old ones ?

 

haha, i am ''intrinity''-the clueless one asking the questions.

i did not mention i put in new O2s in the front during my 2v 5.4 swap. this swap has never done before. all the sensors/pcm are from the +04 4.6 .
the truck starts and idles fine then a minute later it blows the fuse, stumbles the the orange wrench pops up

maybe ill try just unplugging o2s first.

i dont think its the o2s because the fuse blows before there in use-after 45 seconds the truck starts. maybe they could still cause the fuse to blow idk.

ill report back with my findings...

i scheduled appointment with dealer on tuesday.. it be nice to get it sorted out before then

 

+1 very true. the question is what

i hate electrical... i also hate going to the dealer

 

Sorry, the same question as Jetpilot2 & 88racing

You swapped the motor ? the thinking was missing some info, but come on, could this have been something to mention in the 1st place.

 

....possibly, but i think it could go both ways- ''you have an engine that never came in that truck, thats what your problem is" type of responses.
and if that is the case i dont want to hear it lol.

 

No, that would not be the comment. The full info would have been useful in diagnosing your issue.

This would have changed my answer to :

Pull the Harness form the PCM that has the P2 Sensor on it, and disconnect the O2 Sensor, and meter both leads to ground, you might find a chaffed wire from removing or installing the motor.

BTW : Don't know if that motor sits in the truck the same way, that engine is the one that usually has the harness that the wire drops onto the passenger side exhaust, and melts the wire, causing this problem. It requires pulling the inner fender well to see it ( or getting up behind it from underneath ).

Rather than work from Supposition, supply all the info.
You might have had your truck back up and running by now.

 

thank you for the useful information. im kind of lost on what ''P2'' refers to. i quess ill have to rip into the wiring schemetics. ill try just unplugging the O2s first and see what happens.

my wiring sits like it did with the +04 4.6.
all wiring, senors,pcm, and exhaust is the same, except for the 5.4 headers
it was enevivable that i would to ******* something up

 

P2 refers to a typo ( sorry about that ) of O2. Old hands don't quite bend right at times.

Can't say I have seen the passenger side of the 04+ 4.6 engine.

This is from a 97-03 MY, where the harness comes loose and gets up against the xhst pipe.





Did you replace the PCM from the correct MY for the engine you installed ? ( don't want to assume anything at this point ).

 

WOW!! I didn't see that coming, an engine swap?

Well, who knows at this point. There was/is one component you didn't list for F32; the Intake Manifold Tuning Valve (4.6) and it looks like you listed some F32 items for the 4.6 and 5.4 in your OP, so I'm not sure you have everything covered. Are you sure you don't have a connector swapped somewhere?

I think you'll have to dig in depth to a wiring diagram and go component by component and connector by connector and make sure the the wiring matches up and you have the correct connector going to the correct component.