I have an 1981 Thunderbird and am getting poor gas mileage, italso fluxuates between 28mpg and 8mpg anyone know what I should be looking for or adjusting?

Asked by Feb 25, 2012 at 04:15 PM about the 1981 Ford Thunderbird

Question type: Maintenance & Repair

4 Answers

125

CJ, SAME PROBLEM WITH MY BASE 1981 T-BIRD. 3.3 ENGINE 10-30 MPG IF YOU GET AN ANSWER PLEASE TELL. I WILL DO THE SAME. JOHN

395

What type of fuel are you using? And have you tried flushing or having the fuel injectors cleaned. Another thing that will affect fuel consumption are bad plugs and ignition wires.

395

Also if it's carburated, you might want to re and re it. Have it rebuilt or replace with a good aftermarket one like Holley or Speed Demon. They'll have one that will match your OEM. If you have a Rochester Carb though, you may have to get that rebuilt or as I said replaced. Also, change your fuel filter.

125

RE: 81 T-Bird--I replaced my carb with a rebuilt one, supposedly with the correct, original code EIBE-AFA. I just pulled an identical, original carb off an 81 Mustang, with a 3.3. (HOLLY 1946) I am going to rebuild it and keep you posted. Even using mid grade and occasionally premium, I still have the wild swing in MPG. It is a big question mark each time I pull up to a pump as to what my MPG will be. Some times I'm happy as hell, sometimes not! Am wondering if my Centrifigal Advance or vacuum Advance/Retard in my distributor is always functioning. The local Ford dealer threw away their test bench!! We are in this together. John

Your Answer

Add photo

Related Questions

  • 1995 Thunderbird won't start. 25 answers

    Tried about everything. Almost starts after sitting but won't keep running. Getting spark on plugs. Fuel pressure checks good. Checked TPS and Mass Air sensor OK. Changed fuel filter, replaced ga...

    1995 Ford Thunderbird LX

    -

    Maintenance & Repair

  • 1963 thunderbird, rebuilt engine and transmission. 390 4 barrel. runs hot! after a mechanic worked on it and replaced the carburetor, 20 answers

    we have been checking everything, when we had it at home it did not run hot. we took it to a mechanic because we could not get the idle down. he said the carburetor was bad, got another one from thund...

    1963 Ford Thunderbird

    -

    Maintenance & Repair

  • Average restoration cost 28 answers

    Need to repaint the body, overhaul 312 engine and 3 speed manual w/ over drive on a '56 T-Bird. What should it cost to repaint the Body? Cost for an average engine overhaul? Rebuild the transmissi...

    1956 Ford Thunderbird

    -

    Maintenance & Repair

  • Help wanted adjusting engine slow running speed and any intake vacuum leaks 9 answers

    I have a 1963 ford 390, new good carburettor, no vacuum leaks, choke is free, timing is correct 6 deg idle speed, Idle screw free, I cant get it to run at around 480rpm it runs at 650 etc. The fuel ...

    1963 Ford Thunderbird

    -

    Maintenance & Repair

  • 2004 escape 3.0 very poor gas mileage 21 answers

    I have a ford escape that is only getting 13 MPG aroung town and 16-17 mpg on the highway. a far cry from the 23 MPG I have changed the plugs, used injector/valve cleaner and no improvement. I hav...

    2004 Ford Escape XLT 4WD

    -

    Maintenance & Repair

Thunderbird

Looking for a Used Thunderbird in your area?

CarGurus has 1,091 nationwide Thunderbird listings starting at $6,000.

ZIP:

Search Ford Thunderbird Questions

Ford Thunderbird Experts

#1 Larry Sturgis
Larry Sturgis
Reputation 1,510
#2 Tom Demyan
Tom Demyan
Reputation 1,470
#3 tennisshoes
tennisshoes
Reputation 1,160
View All

Related Models For Sale

Used Ford Mustang
326 Great Deals out of 45,932 listings starting at $2,000
Used Chevrolet Corvette
107 Great Deals out of 20,756 listings starting at $3,499
Used Chevrolet Camaro
137 Great Deals out of 35,611 listings starting at $1,995
Used Ford F-150
2,429 Great Deals out of 211,450 listings starting at $895
Used Mercedes-Benz SL-Class
59 Great Deals out of 3,089 listings starting at $3,500
Used Dodge Challenger
143 Great Deals out of 24,418 listings starting at $8,500
Used Chevrolet Impala
589 Great Deals out of 29,008 listings starting at $1,300
Used Dodge Charger
232 Great Deals out of 27,473 listings starting at $1,997
Used Pontiac Firebird
8 Great Deals out of 796 listings starting at $1,800
Used Mercury Cougar
208 listings
Used BMW 3 Series
1,047 Great Deals out of 35,389 listings starting at $900

Used Cars For Sale

2005 Ford Thunderbird For Sale
73 listings starting at $11,500
2004 Ford Thunderbird For Sale
158 listings starting at $8,950
2003 Ford Thunderbird For Sale
155 listings starting at $8,500
2002 Ford Thunderbird For Sale
10 Great Deals out of 310 listings starting at $6,000