| FiTech issues [message #370112] |
Sun, 10 July 2022 11:39  |
Larry
Messages: 2875
Registered: January 2004
Location: Menomonie, WI
Karma: 10
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This is FYI info in case anyone runs into the same that I experienced. I've been having serious issues with my FiTech. On our trip to Florida this past winter, the FiTech began experiencing 10.4 AFR's, rarely running on command. No matter what I did to AFR's, it ran way too rich. Sometimes it would run into the 13's, so I drove it home some 1500miles stopping for fuel way more often that I wanted to. Also noticed a flicker in the tach needle, and occasional hand held tach responses of high rpm. Like just a flicker of say 4578rpm or 3659rpm....random high numbers. After spending time with FiTech support and changing out the O2 sensor and Fuel Pressure regulator to no avail, the FiTech finally started Coding a "code 35". This started gradually, only seeing flickers on tach and coding 35. Then constant flickering and coding 35. Code 35 is a "ignition noise" issue. FiTech support said it was electronic noise coming from the Petronix 1181LS that I installed to replace the points. Talked to Petronix and they sent me a filter that was suppose to eliminate the noise. It is a free upgrade. Installed it with no change. Finally I pulled the distributor cap with wires and found rotor center contact to be quite worn, and two spark plug wires that were out of sync (ohms) with the other 6. I replace the wires and rotor. Still a code 35. (ignition noise) The only thing left was the coil. I had purchased the coil as a matching coil to be used with the Petronix 1181LS. It is their 1.5ohm "Flame-Thrower" Petronix coil. I took the coil out and replaced it with an old 12v Delco coil that I've had laying around for many years. Code 35 gone, and runs perfect going to AFR's commanded. This Petronix coil has been going bad over the last 5 months...a little at a time creating noise that was F'ing with the CPU programming. Hope this helps someone.
I posted this to the FiTech forum on Facebook also.
Larry 
78 Royale w/500 Caddy
Menomonie, WI.
[Updated on: Sun, 10 July 2022 13:20] Report message to a moderator |
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| Re: FiTech issues [message #370115 is a reply to message #370112] |
Sun, 10 July 2022 13:56  |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Cars (trucks, RVs) are incredibly electrically noisy. And hard to shut up. Chokes, capacitors, and ferrites liberally applied are usually sufficient.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: FiTech issues [message #370116 is a reply to message #370112] |
Sun, 10 July 2022 16:03 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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Senior Member |
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OEM proves better than “bigger better go faster” aftermarket. Once again.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: FiTech issues [message #370117 is a reply to message #370112] |
Sun, 10 July 2022 17:23 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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Basically you want a coil with the LOWEST voltage rise that exceeds the worst case conditions and will still fire the plug. More capability beyond that is just more primary Amps draw, more mag field EMF and more noise.
John Lebetski
Woodstock, IL
77 Eleganza II
[Updated on: Sun, 10 July 2022 17:24] Report message to a moderator |
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| Re: FiTech issues [message #370126 is a reply to message #370112] |
Mon, 11 July 2022 22:17 |
dsmithy
Messages: 210
Registered: July 2012
Location: Lincoln Nebraska
Karma: 0
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Senior Member |
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Larry,
I have the Pertronix 1181LS and purchased the Flame-Thrower coil at your suggestion for an otherwise stock 1973 engine. After having Wally Anderson help me address the timing issue that you uncovered at the Chippewa Falls convention my coach has been running like a top. Do you think there is any reason to revisit my coil in the absence of any obvious problem?
Douglas & Virginia Smith,
dsmithy18 at gmail,
Lincoln Nebraska,
’73 “Sequoia” since ‘95: "Wanabizo";
Quadrabag/6 wheel disks/3:70 final/Paterson QuadraJet/Thorley’s/Alloy wheels/Sundry other
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| Re: FiTech issues [message #370128 is a reply to message #370127] |
Tue, 12 July 2022 15:41 |
dsmithy
Messages: 210
Registered: July 2012
Location: Lincoln Nebraska
Karma: 0
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Senior Member |
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Thanks Larry. Our best too you and Lucy.
Safe Journeys!
Douglas & Virginia Smith,
dsmithy18 at gmail,
Lincoln Nebraska,
’73 “Sequoia” since ‘95: "Wanabizo";
Quadrabag/6 wheel disks/3:70 final/Paterson QuadraJet/Thorley’s/Alloy wheels/Sundry other
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