Hey guys..This is my 1st post..Iv just purchased my first Datto, PUC 125..Was featured in the SR20 shootout in Serious Performance 6..Anyway Iv got a question about the speedo cable..When im driving the speedo is bouncing around so badly that i cannot even get a general idea of the speed im doing..I want it to sit steadily enough just so i can see how fast im going..any idea's how to fix this? is it just a speedo cable adjustment? any help would be much appreciated..

A flickering needle is usually caused by a dry speedo cable which needs some lubrication. Its not so easy to get the cable lubricated all the way along its length, but here's a method I used with success.

Pull the cable out and hang it up from the ceiling somewhere. Then put a few drops of oil in the top and let it hang. Periodically add more drops of oil until it either comes out the other end or you are satisfied it is lubricated all the way along its length.

When you put it back in the needle should be steady.

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1971 Datsun P510 SR20DET 276 rwkW
2005 Mercedes AMG E55 350 kW
1969 Datsun P510 L20B EFI 95 rwkW
1975 Ford XB Fairmont GS Wagon 179rwhp
1980 Escort Van SR20DET unfinished
2002 Suzuki GSX1300R Hayabusa 185hp