Nope. 32k miles.
Who has a 7.3 and experienced the "misfire" plug wire concern or not please leave feedback
- OP 🔹 fordguy74656
- Start date
- Jul 25, 2020
- 922
- 1,229
- Navy
- 2022 F350 Platinum Tremor 7.3 w/winch 2020 F350 Platinum Tremor 6.7
- 2013 Jeep JK Rubicon or 2018 KTM 1290 SAR
seems like I hear a lot of negative stuff about the massive wires, and 5 star quit selling the fire core. Definitely would like to hear what you end up doing and if it works. mine will be here in a month or two hopefully with no issues
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- Jan 20, 2020
- 483
- 1,100
- 2020 F250 7.3 Tremor Lariat, Magnetic w/chrooome
- Santa Cruz Vala
I have experienced my first Firecore failure on cylinder #2 of my 7.3 gasser. I installed the Firecore wires in July once we had towed across the country, limping in to my parent's driveway with a mix of Massive and OEM wires (the Massive wires are complete shit, melted on the first few hours outside of Seattle). I ordered the Firecores with the titanium sleeves.
Well, that was about 6 months and 6000 miles ago. I towed back across the country and towed the boat locally, then just mellow daily driving around town, runs to Home Depot, etc. This morning as i got on the highway and put the pedal 75% down, the rpms jumped up and the CEL started blinking. I have a bluetooth diagnosis tool plugged into my port, so I grabbed my phone and checked it... Cylinder #2 misfire. If I kept the rpms low the light stayed off, but I stress tested it again and sure enough the light started blinking.
So now I've tried Massive and Firecore, expecting (for some naive reaason) that the Firecore would outperform the Massive. Well, they had slightly better longevity, which isn't saying much.
We have a couple winter trips planned with our travel trailer, so i need to figure this out instead of going hunting today. Damnit.
Well, that was about 6 months and 6000 miles ago. I towed back across the country and towed the boat locally, then just mellow daily driving around town, runs to Home Depot, etc. This morning as i got on the highway and put the pedal 75% down, the rpms jumped up and the CEL started blinking. I have a bluetooth diagnosis tool plugged into my port, so I grabbed my phone and checked it... Cylinder #2 misfire. If I kept the rpms low the light stayed off, but I stress tested it again and sure enough the light started blinking.
So now I've tried Massive and Firecore, expecting (for some naive reaason) that the Firecore would outperform the Massive. Well, they had slightly better longevity, which isn't saying much.
We have a couple winter trips planned with our travel trailer, so i need to figure this out instead of going hunting today. Damnit.
I have re-read many of the threads and there is a trend. When someone had a code reader it seems cylinder 2 has more issues than the others. I wonder why? I have no answers. Just see the trend and figure it can't be random.
Good observation as I was thinking the same exact thing. I don't think it's a coincidence.
- Nov 17, 2020
- 217
- 703
- Army
- LEO
- '21 Antimatter Blue 7.3L Ultimate Lariat Blackout Tremor
- '88 Bronco
Mine was built 19 JAN 2021 now has 8,545 miles on it with no misfires.
So I just had this issue with the dealership putting the B part number in cylinder 2. I called them back and said that I want the C part number. They said ok and that it would be ready to go in 2 days once they swap it out. They didn't even attempt to fight me on it. I would for sure ask them about it if I were you.
- Jul 13, 2020
- 93
- 110
- 2020 F250 XLT Tremor
- 2006 F350 dually, 2004 6.0 Excursion, 1999 F350 7.3, 1996 F250 gas
2020 bld Date 6/20. 39xxx miles. Tow heavy run hard empty, up and down the east coast.
No wire issue yet, all the proverbial omens!
Transmission, yeah. HATE!
No wire issue yet, all the proverbial omens!
Transmission, yeah. HATE!
Try towing 10k+ up relatively steep incline for 30 minutes at 80+ degrees, after hauling it around town(100 degrees) most of day. Main culprit isn't just the wires or their design. It's the heat from manifolds. Ford should address that and get some thermal type coating on them.
Home
Top-quality heat shield insulation for automotive, marine, industrial, and home use. Enhance performance and safety with Heatshield Products.
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"ABOVE: The 7.3L uses a similar ignition setup to other well-known modern pushrod V8s – the GM LS engine series. But unlike those engines, we only see two wires going into the coil pack. This alludes to these not being the smart coils and having some of the capabilities of the other V8."
"ABOVE: We spotted these interesting-looking spark plug boot protectors. Those cast-iron exhaust manifolds look ripe for Heatshield Armor or Lava Wrap to be installed!"
Planning a road trip with the TH soon. So, decided to order a set of the C wires and pop them in. Since they're less than 1/2 price of the B. Will also find out more about coatings for manifolds soon.
Yes, had this problem!!! Ford warranty took care of it! It should be addressed!!!! I have a 2020 F350,, do a lot of towing,, invested in extra heat shield protected wires,, I keep as spare until Ford figures it out!!!Try towing 10k+ up relatively steep incline for 30 minutes at 80+ degrees, after hauling it around town(100 degrees) most of day. Main culprit isn't just the wires or their design. It's the heat from manifolds. Ford should address that and get some thermal type coating on them.
Home
Top-quality heat shield insulation for automotive, marine, industrial, and home use. Enhance performance and safety with Heatshield Products.
"ABOVE: The 7.3L uses a similar ignition setup to other well-known modern pushrod V8s – the GM LS engine series. But unlike those engines, we only see two wires going into the coil pack. This alludes to these not being the smart coils and having some of the capabilities of the other V8."
"ABOVE: We spotted these interesting-looking spark plug boot protectors. Those cast-iron exhaust manifolds look ripe for Heatshield Armor or Lava Wrap to be installed!"
Planning a road trip with the TH soon. So, decided to order a set of the C wires and pop them in. Since they're less than 1/2 price of the B. Will also find out more about coatings for manifolds soon.
"Extra heat shield"? Who/where did you get these wires? Or are you talking about some boot sleeves?
Right on. Just did the swap from the "A" to "C". Haven't had to do any towing with it as of yet. How are they holding up so far? I know they haven't been fully tested out yet due to it being winter and such. I would have let dealer do it, if it wasn't for them wanting to keep it and bad experiences from last time they had it. Unfortunately, both my batteries are leaking (due to engine bay heat). So, I'll have no other choice but to bring it in one of these days.
CORRECTAMUNDO!!! Everything I've also read and experienced personally was #2...My best guess is that it's designed to purposely be a fail point or something for whatever reasons and causes the stock wire to shit out and put in limp mode??? The massive wires didn't specify which cylinder though. They just gave random misfire codes instead.
I can foresee that new Cummings (runs on anything) for a possible swap in my "hopefully" distant future.
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Do you mind posting the part # for the C plug wires? I too have the dual batteries on my MY22 7.3 and wouldn't mind have an extra set of plug wires just in case for my road trip.
Here's the tsb thread that contains pdf for the motorhomes and link for part dealer. Guess they're more important to Ford for repeat customers or something??? After all, it's the same engine and same problem for us SD owners.
Don't forget scan tool or laptop for hookup with forscan. Although I would say just swap out the #2 wire. That one being the passenger 2nd from front. GL and enjoy your travels.
Fords new 7.3L gas spark plug wires - Page 5 - iRV2 Forums
Originally Posted by Mikes2000 My wife and I in June 2020 purchased a 2021 HR Vacationer 35K. This is equipped with the new Ford 7.3 gas engine. We purchased it in Florida, and drove it home to
www.irv2.com
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- Jan 20, 2020
- 483
- 1,100
- 2020 F250 7.3 Tremor Lariat, Magnetic w/chrooome
- Santa Cruz Vala
Swap 'em all out. I had problems with Cylinder #7 misfires as well, though that was with the Massive POS wires.
My 2021 Tremor (purchased Dec 2020) has 55,525miles. I live in the Arizona desert so no stranger to driving in hot environment. Started misfiring last week when towing a car on a flatbed trailer on the interstate at only 60mph. Have had no prior issues with this truck. Tow a travel trailer at times with no prior issues. Talked to my son in MT who is a mechanic. He and a buddy, also a mechanic, suggested a couple possible issues including the plug wires. Said Ford is aware of this issue and suggested upgraded wires. Took it to Ford. Turns out it was the wires. They tell me they don't have upgraded wires after I foolishly let them swap out the wires for their overpriced Ford product. Running fine now but for how long on these new, for lack of better terms stock, wires?
My 2020 never had issue. 56000 when I sold it. New engine due to lifter failure at 36000.
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You can upgrade the wires to these if you want better quality:
Ton's Ceramic Titanium Sleeved Spark Plug Wire Set 11" Ford 7.3L GODZI – Ton's Performance
Ton's Ceramic Titanium Sleeved Spark Plug Wire Set 11
Ton's Performance Ceramic Spark Plug Wire Set with titanium sleeve; 11" 8mm wire; for 2020+ Ford GODZILLA 7.3L These are high performance replacement spark plug wires for 2020+ Ford 7.3L engines. Ton's Performance wires are built with a spiral wound alloy conductor with a high dielectric...
tonsperformance.com
