Random Power Loss

[cruiser88]

You are right....its inside. hell some of it may be outside.....s*** I have had to much to drink

My FSM is at home (I'm at school), and the OP has one.

radd5, have a look at the wiring diagrams in the fold outs at the back of the FSM, you should be able to find the right wire color code, and pull off the trim panel by your jack/toolkit/rear window washer and access the wiring in the bottom of the quarter panel (or is the offending bit under the truck?)

 

[radd5]

So check the fuel pump wiring ... right? Anything particular I need to look for?

 

[cruiser88]

So check the fuel pump wiring ... right? Anything particular I need to look for?

Well lets see the wire tends to brake or corrode. You don't always see it.... use a meter if you have to Many of us just by-pass that wiring altogether and wire the fuel pump to the fuse panel but you don't have to.

Yep just pull that cover and start digging around you will find it. There is a spot under the rig I believe where the batch of wiring comes into the quarter. Sorry I do not remember the color off the top of my head .

 

[lehiguy]

If your charcoal canister has a leak, you have most likely found your problem. When the vehicle actuates the purge valve to clean the fumes from the canister, it's only creating a vacuum leak since you verified that yourself. You can experiment with this buy temporarily plugging the lines to the canister (be aware that this will cause pressure to build up in your fuel tank, so don't do it for very long.) I suspect that you will find that your problem has disappeared.

 

[PabloCruise]

I almost forgot.....These intakes get realllll dirty on a 62 along with the EGR'S It would not hurt to pull it and check them both. I know when you look at the intake its looks like much work at first glance....its not really. I also have injectors that a fellow has never paid for....some new some used all in good shape....only if you need them and this guy does not pay up.

Does the IAC get dirty?

What will dirty EGR do to performance?

Do you service injectors?

Dealing w/ my own 3FE issues...

 

[radd5]

I don't know if the charcoal gets dirty, but this one is plugged up. I followed the FSM to evaluate the CC and it didn't pass. I tried to blow out the clog (per the manual instructions) and no luck. I went up to 50 psi, but it wouldn't clear after 10 minutes...

I have a call into cruiserparts.net to see if they have a used one (I don't want to spend $400.00 for a new one).

I probably wont get to the wiring until Friday...

I appreciate the support.

 

[RockDoc]

I don't know if the charcoal gets dirty, but this one is plugged up. I followed the FSM to evaluate the CC and it didn't pass. I tried to blow out the clog (per the manual instructions) and no luck. I went up to 50 psi, but it wouldn't clear after 10 minutes...

I have a call into cruiserparts.net to see if they have a used one (I don't want to spend $400.00 for a new one).

I probably wont get to the wiring until Friday...

I appreciate the support.

Put an add in the classifieds (wanted section) and link it to you signature line, or look through the parting out section. Cruiser88 may have one, he's been parting out his 62. You can likely get a good one for less than 10% of what the dealer wants new.

 

[cruiser88]

Does the IAC get dirty?

What will dirty EGR do to performance?

Do you service injectors?

Dealing w/ my own 3FE issues...

I have never serviced them.....I think there is somebody that may clean them? I would ask Mace....Think he spoke of something referring servicing.

Yea I had to clean my IAC once...it was carbonized. I seen no difference in performance afterwords....personally.

Well I desmogged my rig so I never knew what what a dirty EGR do.

 

[cruiser88]

Put an add in the classifieds (wanted section) and link it to you signature line, or look through the parting out section. Cruiser88 may have one, he's been parting out his 62. You can likely get a good one for less than 10% of what the dealer wants new.

Mine is not plugged...its just not pretty.

35 bucks plus the ride. If you want it let me pull it off and make sure the bottom is not rusted. The line that goes into the bottom can rust...so I need to check mine. Just pm me if you want me to check.

 

[radd5]

88...thanks for the offer. I got a quote from cruiserparts.net for $75, so if you're willing to look I'd be interested. BTW, how many miles are on yours (canister that is .

 

[RockDoc]

BTW, how many miles are on yours

he he, lots

 

[cruiser88]

88...thanks for the offer. I got a quote from cruiserparts.net for $75, so if you're willing to look I'd be interested. BTW, how many miles are on yours (canister that is .

400 k.

I will be happy to look in the am

just make that 35 bucks total if its usable I will not charge extra for shipping

 

[radd5]

I luv ya man, but I'm gunna pass on it. (wow...400K). You got 400K out of yours and its good and mine has 120K and it's failed. You obviously have the midas touch.

Just keep yours in a safe place just in case cruiserparts.net or Mac don't work out...

 

[cruiser88]

I luv ya man, but I'm gunna pass on it. (wow...400K). You got 400K out of yours and its good and mine has 120K and it's failed. You obviously have the midas touch.

Just keep yours in a safe place just in case cruiserparts.net or Mac don't work out...

I understand...that's why I said its not pretty and I will need to check it out...I am anal about stuff I sell

 

[radd5]

The wiring and relays at all the FI components seem to check out good (cold start injector, water temperature sensor, circuit opening relay, EFI relay.

Anyone know what symptoms can be expected with a bad throttle position sensor or fuel pressure regulator?

 

[RockDoc]

TPS out of adjustment, of with a weak return spring can give you a rough or high idle, and some stumbling off of idle. If it is giving an intermittent bad signal (or intermittent poor contact at the connector), it could give symptoms like you've described. Basically it's what tell the ECU how hard you are into the throttle, and between that the the AFM the ECU meters fuel in response to your demands.

 

[iaintscared1969]

I had one give me a run for the money like yours and found that the ECU connection had worked loose since the Previous mechanic had fiddled with it. Just my .02

 

[RockDoc]

TPS out of adjustment, of with a weak return spring can give you a rough or high idle, and some stumbling off of idle. If it is giving an intermittent bad signal (or intermittent poor contact at the connector), it could give symptoms like you've described. Basically it's what tell the ECU how hard you are into the throttle, and between that the the AFM the ECU meters fuel in response to your demands.

 

[radd5]

iaintscared1969...which ECU connection was the problem? I have the darn ECU out right now, so timing couldn't be better for me to check them.

 

[iaintscared1969]

It was the pin set closest to you. It had wiggled out of the socket and everytime I made a slight bump or jarring it would cause the truck to die then it would start up again. Stupid but that's what it was. And I do think that the TPS may be an issue as stated it is the brain to the ECU that tells it how hard you are in the throttle.