DRFTEM Posted November 13, 2009 Share Posted November 13, 2009 Ok I have a 260z with l24 and 5 speed. Om the freeway going 65 im hitting 4500 rpm in 5th. is that normal. it just seams kind of hi for me. oh yeah it might be tire size on my car. It has 225/50 r15 in the rear. is it normal or is it my tire size? or is it the gearing that is causing it? Quote Link to comment Share on other sites More sharing options...
ModernS30 Posted November 14, 2009 Share Posted November 14, 2009 First off, what does the car sound like? Is it loud and sounding like your killing a deer? I'm assuming your doing 65 for a little while, 4500 rpm is quite alot for constant driving if you don't have a race built motor, stock engines just aren't made for that. If it doesn't sound like 4500 rpm, then its probably not. Tire size causes speedo issues but I don't think it would cause a tach issue that I am not sure of. Could be gearing but then again, you would hear it as well. Quote Link to comment Share on other sites More sharing options...
hoov100 Posted November 14, 2009 Share Posted November 14, 2009 cheap way to check, is to buy one of those sunpro tach's from autozone, hook it up and compare. But the stock tach isnt very accurate, even when it works right. Quote Link to comment Share on other sites More sharing options...
DRFTEM Posted November 14, 2009 Author Share Posted November 14, 2009 oh sorry i should have clarified more. this is an autometer monster tach. It has had the wires clipped for it to read a 6 cylinder and has its signal wire coming from the neg post on my blaster coil. ok found some more info on my tach . now im thinking i have the tach set wrong. can someone tell me if i have it set up right. 8 CYL. (4 Pulse) — NO adjustment is necessary. 6 CYL. (3 Pulse) — Clip BROWN wire loop only. Insulate with electrical tape. 4 CYL. (2 Pulse) — Clip BLUE wire loop only. Insulate with electrical tape. 4 CYL. (1 Pulse) — Clip BROWN and BLUE wire loops. Insulate with electrical tape. so I have the brown wire cut. is that correct? I have a 240z with electronic distributor in it. Quote Link to comment Share on other sites More sharing options...
morbidsunroof Posted November 14, 2009 Share Posted November 14, 2009 Sounds like A quality control issue at the factory...you'll have to reconnect the brown wire and cut a different one until you read 800-1000 rpm at idle. Maybe it's a bomb! ("Its always the BLUE wire!") lol. Nick Quote Link to comment Share on other sites More sharing options...
ModernS30 Posted November 15, 2009 Share Posted November 15, 2009 Yep, sounds like its hooked up wrong. Quote Link to comment Share on other sites More sharing options...
DRFTEM Posted November 15, 2009 Author Share Posted November 15, 2009 ok so i double checked with a buddy what my rpm was at at idle and his gauge read 700 so i checked my wires and my brown wire was cut and reading 1500rpm. so i messed with the wires and only way i could get 700 was hooking all wires up. but now it revs real slow and wont rev past 3k. Quote Link to comment Share on other sites More sharing options...
morbidsunroof Posted November 15, 2009 Share Posted November 15, 2009 Call their tech line! They may authorize a replacement. Nick Quote Link to comment Share on other sites More sharing options...
DRFTEM Posted November 15, 2009 Author Share Posted November 15, 2009 i guess i will try that. Quote Link to comment Share on other sites More sharing options...
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