funky tach readings
#1
Junior Member
Thread Starter
iTrader: (3)
Join Date: Feb 2008
Location: Pollock Pines, CA
Posts: 281
Total Cats: -2
funky tach readings
i adjusted the idle on the TB and i had it at about 700 and it after a couple of starts it came down to the picture bellow. occasionally the tach will jump around in about 300-500rpm increments unprovoked, some days it will read 4k @ 65, other days 3.5k. wiring, tach, cas, TB? i don't think it has anything to do with the clutch because i did the full throttle at 40 in fifth test with no slipping (referring to the 3.5k 4k variation.) i'm pretty sure the o-ring on the cas is fried so i'm going to start by replacing it.
i just wanted to know if this was even possible for miata engines to idle stably at this actual rpm, because it definitely wasn't complaining (i increased the idle after i saw this):
i just wanted to know if this was even possible for miata engines to idle stably at this actual rpm, because it definitely wasn't complaining (i increased the idle after i saw this):
Last edited by frostyllama; 08-31-2010 at 09:44 PM.
#3
Junior Member
Thread Starter
iTrader: (3)
Join Date: Feb 2008
Location: Pollock Pines, CA
Posts: 281
Total Cats: -2
computer? i have a stock ecu, i haven't checked the battery or the coil, those are probably good places to start. i plan on upgrading to cops, so that should eliminate the problem if it is coil related. i'll check the battery when i get i chance, but come to think of it those two things make a lot more sense.
Thread
Thread Starter
Forum
Replies
Last Post
stoves
Suspension, Brakes, Drivetrain
5
04-21-2016 03:00 PM
JesseTheNoob
DIY Turbo Discussion
15
09-30-2015 02:44 PM