sleepy rev counter

[mitchelltjohn]

When I start my TR7 my rev counter needle remains at 0, even when I rev and idle car for some time.
The rev counter only springs into life when I drive the car for about half to one mile down the road after which it operates fine with idle and any engien speed. However, once I switch ignition off I am back to square one where rev counter needle remains at 0 until I agina drive the car for about half to one mile.

Any ideas what may be wrong and how to fix?

1979 FHC pageant blue
1981 DHC triton green

[darrellw]

Yep, common problem.

This site seems to be down at the moment, but talks about what you need to clean:

http://www.team.net/TR8/tr8cca/wedgelab ... h/tach.htm

Basically the needle get contaminated with some flux, and sticks a bit. Very easy to clean once you take it out.

-Darrell

Darrell Walker
66 TR4A IRS-SC CTC67956L
81 TR8 SATPZ458XBA406206
Vancouver, WA, USA

[john 215]

Hi,

I got hold of 'real' TR8 tacho for my DHC from the US, installed and the bl88dy thing didnt work [:(!]

Gave Speedy Cables a call, posted it to them and they repaired it, also installed a little printed circuit and now it runs instantly [8D]

http://www.speedycables.com/

Cheers John


LIVE LIFE A QUARTER OF A MILE AT A TIME!

1976 Speke FHC Beauty

1979 3.5 FHC(STATUS PENDING!!)

1982 2.0 DHC NOW A 4.6,ON THE ROAD NOW KICKING AR5E !!!!

[busheytrader]

<blockquote id="quote"><font size="1" face="Century Gothic, Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by darrellw</i>


Yep, common problem.

This site seems to be down at the moment, but talks about what you need to clean:

http://www.team.net/TR8/tr8cca/wedgelab ... h/tach.htm

Basically the needle get contaminated with some flux, and sticks a bit. Very easy to clean once you take it out.

-Darrell<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">

I'm on my 3rd revcounter and the first 2 both had this issue. A quick blip of 2,000rpm brought them to life. The delay wasn't a problem but they both expired around 12 years old..........

The website is backup.

Adam



TR7 V8 DHC Jaguar Solent Blue. 9.35cr Range Rover V8, Holley 390cfm, JWR Dual Port, 214 Cam, Lumention, Tubular Manifolds, S/S Single Pipe Exh, 3.08 Rear, 200lb Spax & PolyBushes all round, Anti- Dive, Strut-Top Roller Bearings, Capri Vented Discs & Calipers, Braided Hoses, 4 Speed Rear Cylinders, Uprated Master Cylinder & Servo, AT 14" 5 Spokes or Maestro Turbo 15" Alloys, Cruise Lights, S/S Heater Pipes, Replacement Fuel Tank. No Door Stickers. Mine since July 1986, V8 from 1991 courtesy of S&S V8 conversion and big brake kits.

[dursleyman]

<font size="2">Same problem on my TR7.
Worried me the first time I noticed it. I had just fitted an electronic distributor so thought something was wrong and it suddenly came to life.
Now I just expect it to be lazy and its fine after a short while.
Another one of those things you love about old cars. </font id="size2">

Russ

1980 TR7 DHC
Dursley
UK

[FI Spyder]

Mine sticks for less than ten seconds. I know I can eliminate this by cleaning it but not really a problem so will leave it unless I need to remove the instrument pod and have the time to do it.



- - - - TR7 Spider - - - - - - - - 1978 Spitfire - - - - - - 1976 Spitfire - - 1988 Tercel 4X4 - Kali on Integra - 1991 Integra - - Yellow TCT