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I have been pretty religious about filling each wire fitting that I have disconnected and reconnected and I am running out of ones that I haven't done yet.You know how well you checked, but I’d squirt a little compressed air in the cap pins & centerpin area esp, and maybe even scrape/garnet paper the cap plug wire points (all contact pins where the plug wires attach), and that centerpin & each pin the rotor arm arcs.
Or is your o-ring for the dizzy cap newer & primo?
How’s the wiring around the coil & the wire from it to the dist cap, that prob got bumped some too in all this, yeah?
-Maybe pull the spark plug wire ends too & blast a little compressed air down each one.
Have you been doing the lithium or dielectric grease in all the harness sockets as you work different jobs underhood?
Scenarios like this are exactly why I goober whichever dielectric or lithium in crap for when stuff takes a shower. Heck, I just did the deck screws for my boat yesterday as the panels went back down, for the off-chance I pull up the floor & Raptor liner some aluminum diamond/tread plate.
Long story short, I’d be blasting compressed air and greasing terminals - it makes these run so much more consistent whenever you shower the motor. So it’s a win even if it doesn’t fix the core issue.
What am I looking for if I open this? Can I seal it with FIPG or something better if I pull the cover off?View attachment 1798795 You might cut the sealant that glues the top cap onto your AFM and take a look at the soldier joints and the sweeper needle.
@ZackR OK, back to this wire. The one you are pointing to is about two inches further towards the front bumper from the fire wall than the one that I am wondering about where it stems off the bigger bundle they both connect to. If you have that wire, where does it go?The 4 conductor plug you have unplugged looks like it goes to the brake fluid level sensor. Small red arrow on mine.
View attachment 1798702
I was wondering about that. I will take a closer look but I did put grease in the electrical connection. I will have to look into testing it.Surging like that is often a TPS problem. That connector is the only critical one under the hood that isn't weather sealed, so check the connection, if good, run the FSM checks on the TPS.
@ZackR OK, back to this wire. The one you are pointing to is about two inches further towards the front bumper from the fire wall than the one that I am wondering about where it stems off the bigger bundle they both connect to. If you have that wire, where does it go?
OK, that makes sense. I yanked a lot of that stuff and the plug looked dusty. I am ruling it out for now. Thanks!Drops underneath, looks like it heads down to the ABS sensors.
I made some match marks on my TPS. Could I try removing it to see if it got wet, or is that I bad idea?
Well, I decided to really blow some air into the TPS connector and I think that fixed it. I got the motor warm and it revs nice and smooth. I will try driving it in the morning, but it must have just gotten wet.I'd focus more on the connector than the unit itself (leave the unit in place). Unplug the electrical connector and let it dry out overnight.
Well, I drove the truck around town this morning and everything seems back to normal. Thanks again for all of your help and especially @Tools R Us for the TPS idea. I am still kinda surprised that just putting the dialectric grease in the fitting wasn't enough, but I learned something about how blowing the connector out mattered and also how easy it was to cause the problem in the first place. I have never been a believer in trying to pressure wash an engine, mostly due to fear of causing an issue like this, but even with a gentle shower of water things can get wet where they shouldn't be.
It certainly didn't hurt to check out all of the other connections and fill those with grease too.
Thanks again! I would have been in the weeds without you guys!
... I have never been a believer in trying to pressure wash an engine, mostly due to fear of causing an issue like this, but even with a gentle shower of water things can get wet where they shouldn't be.
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I have always had good luck just using a degreaser like Simple Green or even mineral spirits if I really have a lot of gunk to cut through, lots of scrubbing with various brushes and then rinsing with the garden sprayer on a gentle setting. That said, plenty of people use pressure washers and don't have any issues.In the time that I have owned it, mine has likely been pressure washed at least 20 times.When dirty rigs come in for work, out comes the pressure washer, routine job. Yes you need to be aware if the distributor, TPS connector, etc, may need to be dried, but not that big of a deal. The TPS connector isn't weather sealed, don't understand why, a dab of silicone grease solves the problem. It's a good thing to do for any exposed connections, but that one is most vulnerable.
In my thinking, it's a good test. Most of the rigs we work on are likely to do water fords, better to find/fix the weakness before, preventing it being stalled in a river?