BlackFC_NYC

i just noticed today while taking off from a light that my redline buzzer in my 87 t2 might be going off around 6 or so.

is this possible?
would the fact that i have a 90 motor in it have anything to do with it?

my car after about 4.5k rockets to 7k, but i know i didnt bring it up that far, i really never do unless im racing.

any ideas?

FEDREX

Mine does the same thing occasionally - I think I need a new tach but I'll wait until I replace the logicon.

BlackFC_NYC

my clutch at times might be slipping as well. im not sure how bad it might be..but maybe that has something to do with it. i dont know.

thanks though

RETed

Was this in 5th gear?&nbsp I've heard it triggering as low as 6.5k in 5th gear...


-Ted

jon88se

it's not the tach, check the ground from the motor/ecu. usually cars that do it in my experience have the 3800 rpm hesitation. find the ground point, use thick gauge wire and a clean point free of paint etc...

RETed

That same buzzer is also for the LOW COOLANT and LOW OIL lights.&nbsp I'd bet one of those is triggering is the RPMs are abnormally low...


-Ted

86Rx7GXL

Where do you ground the motorto the ecu?

Terrh

iTrader: (7)

6.5k in 5th gear?

damn, I gotta go for a ride in someone's car at that speed
How fast is that?

heheh
Fastest I've gone in a car is 205km/h@6200RPM in my fiero (redline is 6000, damn those 4:10 gears!)

Driftfc3s

iTrader: (11)

How do you turn off that damned buzzing sound!!! My car does it all the time, and I have checked all fluids, it goes off when I'm just sitting there! Is there a wire or anything that I can cut???

RETed

About 160mph.
A Turbo II with full exhaust will easily hit those speeds if you got the cajones to hold the gas pedal that long...



-Ted

FEDREX

That's weird because last week I added ground from neg. post to fuse bracket near shock tower and another ground from there to alternator bracket.
I also have my fluid levels up and my shift buzzer still comes on early once in a while.
I would definetely like to know the fix...

Terrh

iTrader: (7)

HMMM

guess what the first mod to my '88 AE is going to be (after fixing the motor )

160mph
DAMN
I can't wait to get out west, with those perfectly straight traffic free roads for 100+KM

BlackFC_NYC

the only time i have noticed this happening was in 1st., maybe 2nd.

pp13bnos

iTrader: (1)

On my n/a 90 i notice that it started going off at around 7k occasionally. Then a couple days ago, i ran it low on gas, and the shift buzzer whent off at 7k again. I though, maybe the cars buzzer will come on sooner when its low on gas...then i filled up, and it still goes off at 7k rpms. It kinda a pain, when i'm shifting it at 8k, were the redline begins. Anyone have any suggestions? I've allready regrounded everything. CJ

my_jdm_rx7

I'd like to know the fix for the shift buzzer too, because mines going off WAY early, 5grand somtimes(not all the time) but i dont think its gone off at redline for sometime, always early, as in before 7K....WTF?

Kerry Middleton

Sorry to revive this thread but I have the same problem

I still cannot find the answer.

Anyone else have this problem or a solution

Thanks

Mark S

iTrader: (1)

I have read somewhere that the tach can sometimes lag behind the actual RPMs in lower gears.

Try accelerating slowly to redline and see if the #s are the same. Remember, the buzzer is not all that accurate. I think new it had a 400 rpm range, so I wouldn't worry about it.

Also, on my 87, the tach needle will sometimes stick a little high. If I smack the dash it drops back in to place.=). Maybe yours is stuck low?

peejay

The tach needle is lazy, and the tach is inaccurate.

Kerry Middleton

Thanks Guys, the info is appreciated.

Bottom Line - I will not worry about it. After all what do you expect after 15 years

pp13bnos

iTrader: (1)

Yeah....i know....its an old car....but i like my problems to be consistant at least. But, just to be safe, i do have a shift light. CJ

DR_Toast

iTrader: (1)

You are not alone!


Mine is going off at 5.5K like clockwork. Fluids are all good. It will do it again and again for 1 car ride and then perform correctly the next. I do get 3800 hesitations sometimes. Time to start grounding I suppose.

beefhole

iTrader: (29)

The buzzer isn't always accurate. Sometimes mine goes off at 8, sometimes at 6, and sometimes not at all.

Icemark

Ah, man no one can search... too lazy I guess

covered at least once just in the last month...

The over rev buzzer is adjustable by a pot on the back of the tach.

If you look at the circuit board on the back of the tach (not the gauges, but the actual tach itself- 4 screws and remove it from the gauge assembly to get to the circuit board).

Anyway on the circuit board there is two (yep that is 2) adjustment pots. You want the metal one. Each half turn is worth about 500 RPM.

But do not touch the plastic pot as that adjusts the calibration for the tach itself. Only the metal pot adjusts the calibration of the over rev.

But before you adjust anything make sure that the trailing coil is firing properlly, as your tach may not be reading correctly, and be your whole problem. You'll need to check the tach lead at the coil with a multi-meter or test device that reads tach signal before adjusting anything.

And BlackFC_NYC fix your signature. The admins of the board only allow 6 lines for a signature. Yours looks to be 17 lines. Fix it before an admin sees it a deletes it without warning.

And DR_Toast any reason to reactivate a 2 year old dead thread, instead of just searching to see how to fix the problem?

ramses666

iTrader: (1)

I wish I could hit 6500 in 5th. Actually my goal is to redline 5th gear in my '88 NA. What would that be 160? .. 180? what would it take? Hmmm....? Hope sonicrats new setup will make my dream come true.

Ramses666

DR_Toast

iTrader: (1)

why reactivate the post? Because I am an oblivious perma-n00b without hope or a clue :p

Sorry, I'll keep my newbie mouth shut next time.