North American Turbocoupe Organization



tachometer
atg87tc Offline
Member
#1
i was gettin on the gas hard today in 3rd gear and looked down at my tach, and the needle was jumping, not moving fluidly. the car performed fine and took down an eclipse, but it the tach didnt move up smoothly, it jumped, not big jumps, but a lot of little jumps. i accelerated hard in first and second, and it didnt seem to do this. any ideas on whats goin on? the engine and turbo seem and sound like theyre working fine.

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87tc-k&n, glasspacks, 5speed
88tc-5.0 conversion. 450rwhp [email protected] 122
99mustang cobra-stock
87tc-k&n, glasspacks, 5speed
88tc-5.0 conversion. 450rwhp [email protected] 122
99mustang cobra-stock
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tps87turbo Offline
Posting Freak
#2
Sounds like an electrical problem. When the battery is low or the alternator is not charging enough, my tach would jump all over the place with the key on.

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Tony Sceia -

HIS - Red 88 TC, Med Red with Raven Leather & every option, Walbro 255, 3" SS Downpipe with Magnaflow Dual SS 2.5 Cat Back system, 3-core Radiator, Star Stage 3 Clutch, Rebuilt T-5 Tranny, 4:10 rear, 140 MPH Speedo, New Paint, Headlights, Refinished Snowflakes & New Tires.

HERS - Blue 87 TC, fully loaded with every option, Gilies Valve, K & N Filter, 3-core Radiator...just needs a little body work & a new paint job.

87 TC - Bought as a Parts Car, & will remain a parts car now that I found the blue one.
Tony Sceia -

HIS Red 88 TC
http://turbotbird.com/showroom/data_r-z/...a_88tc.php
HERS - Blue 87 TC, fully loaded with every option, Work in Progress
87 Gray TC Parts Car - Gave to BJL and is now his daily driver
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grey88smokin Offline
Posting Freak
#3
My tach and speedo do the same thing sometimes. There is a tech article here on how to fix it. I haven't tried it as of yet but am planing on it.

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Grey 88 5 Spd. 16" Cobra wheels, G3 130 AMP ALT. New Hella Fog lights, Gillis valve @ 15 PSI,6"Front mount K&N, PST front end kit, Performance Plus brakes, Pro 5.0 shifter...
84 SVO 1C
08 MKZ
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GlassRooster Offline
Senior Member
#4
MIne did that until I repaced the TFI and distributor but do some diagnostic work before throwing $$ around
David

87 TC Faded Burgundy with faded red interior
K&N and cold air ducting- rest is bone stock
02 Mazda Protege 5 Replaced Dead Saturn
99 Cougar- Wife's car new body style now Discontinued.
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