One I started my 97 Thunderbird up for the 1st time in several months today and no tachometer, any suggestions on how to fix that?
Also got a lean code from the scanner, you can tell the engine is a bit shakey at idle but smooths out when the throttle is depressed, my experience with other vehicles points to a possible intake gasket leak since there is a slight miss upon idle but goes away with when the throttle is applied. A vacuum leak can cause this as well but the vacuum hoses were replaced last year after I changed the plugs, I may look into it more this weekend, but that tachometer bugs me.
Tach is electronic; it's a connector problem, or a connection at the flex circuit that is behind the cluster.
Pulling the Cluster, you will be.
Actually, try smacking the dash; don't break your dash... but it might make it work again.
If it works, it's in the cluster or a connector in the dash, lol.
I wouldn't worry about how it runs until you get new gas in it; unless you put stabil or something in the gas, it's bad in a month.
Get at least half a tank of good gas in it, add a can of seafoam to the tank, and drive it a bunch.
Then see what still isn't right on a datalog.
Old gas doesn't burn the same...
I've got two bikes sitting here, full to the brim with 5yo gasoline.
You Always leave metal tanks full!
I plan to ride both this year, so I have to remove carbs from both, disassemble, clean, and reassemble 8 carbs to have them on the road.
I won't be using the gas out of them for anything but burning brush.
Red '96 Cougar XR-7 240k mi. '02 4R70W, PST DS : '03 PI engine, 04 maf, 24lb injectors, 2.5" exhaust, '02 4r70w + Jmod, DirtyD0g TC + cooler + 3/8" lines, 255 walbro fp. Alpine system.
Black '96 Cougar XR-7 (Lazarus) 210k mi PI Intake, '02 4R70W, Jmod, PST DS, GrogTune, Konis, Mark LCA+Poly, racecougar Custom Engine Chain, and JL and racecougar Bracing.
Black '97 Tbird Limited Edition, '02 4R70W, 255 walbro, PST DS, PBR Brakes&SS lines, Toicko Blues & Springs, GrogTune.
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Last edited by Grog6; 04-08-2014 at 07:23 PM.