166 messages,
Last post on Oct 01, 2012 at 3:17 PM
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Speed Shop Tuning and Modification Forum.
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Ford Thunderbird, Performance Mods, Sedan
#162 of 166 2005 Thunderbird Gas
by bob399
Jun 19, 2012 (2:01 pm)
Like to purchace a 2005 Thunderbird 3.9, manufacture recommends premiun fuel at todays prices would it be ok to use regular 89 octane with out doing damage to engine or ping.
#163 of 166 Re: 2005 Thunderbird Gas [bob399]
by steve_ HOST
Jun 19, 2012 (4:51 pm)
Our specs say "Fuel type: premium unleaded (required)". Not "recommended".
The general rule of thumb when premium is required is that using regular gas gives you less performance, worse gas mileage and can increase the wear and tear on the engine. The car's computer should compensate and prevent ping though.
Since gas got over $3 a gallon, the percentage difference between regular and premium has fallen in most places.
Back when regular was $1.75, paying $2 for regular made a big percentage difference. The percentage difference between $3.50 and $3.75 isn't so much.
Enjoy the new ride and don't sweat the gas price - the better mpg should just about make up for the extra cost (the extra cost could easily be less than $100 a year).
#164 of 166 Re: 2005 Thunderbird Gas [steve_]
by toomanyfumes
Jun 21, 2012 (6:44 pm)
I asked a Ford tech about using regular gas in my Lincoln LS and he gave me pretty much the the same answer you did, Steve. The increase in mileage and performance make up for the small increase in cost.
#165 of 166 1991 Ford Thunderbird ignigition module
by wani
Oct 01, 2012 (9:28 am)
Where is 1991 Ford V-6, 3.8 ignigtion module located. Coil & sparkplugs replaced, new battery, new fuel pump. Acts like going to start, but won't. Was running great, but had to sit without starting for about 2-3 months.
#166 of 166 Re: 1991 Ford Thunderbird ignigition module [wani]
by Mr_Shiftright HOST
Oct 01, 2012 (3:17 pm)
Thick Film Ignition (TFI) module is located on the left side (as you face the car) of the radiator shroud.
You might go to ROCK AUTO to see what one looks like