rpm gauge problem its going crazy!!!

[cb7jdm91]

so i have a 92 accord lx and when i drive normal its reads fine but when i go fast it starts bouncing to like 7 grand and then reading fine for a sec and then again goes crazy is it a switch going bad or the tach itself or wat?????????

[AbsurdNY]

Check all your grounds.

[N9netwoAccord]

it is the ignitor in the distributor on its way out. change it before it makes you stranded.

[cloudasc]

it is the ignitor in the distributor on its way out. change it before it makes you stranded.

Stole the words right out of my mouth!

[accordict]

I cleaned out mine scuffed all contact points and grounds and mine is fine now

[cb7jdm91]

iight ill check that and ill let u kno if that was it

[cb7jdm91]

I cleaned out mine scuffed all contact points and grounds and mine is fine now

wat did u clean out so i can try that too....

[thguyonthecouch]

is it the ignighter or dizzy?? or do they both cause this problem ???? mines fine while driveing but at idle it goes nuts!!!

[cloudasc]

The rpm gauge needle bouncing whether idle, or cruise and not corrisponding to engine rpm properly, is a classic sign that an igniter is on its way out. Replace it before you get stranded.

[jmolina]

The rpm gauge needle bouncing whether idle, or cruise and not corrisponding to engine rpm properly, is a classic sign that an igniter is on its way out. Replace it before you get stranded.

mine used to do it when idling, also when ever i switch the highbeam lights on, but it was not bouncing, it just dropped to 0 rpm and when i reved it reads normal, when i let off it goes back to 0rpms,

that happened a couple of months ago, it never happened again, nothing died. So it could be something else other than the igniter or distributor

might be just the tach going out, or some electrical/wiring of the tach, maybe its just rotten out wires and the metal wires are in contact with something else metal, and causing it to trip.

it wouldn't hurt changing your igniter and distributor, just to be safe, like the others said, don't get stranded.

[CB7isbestaccord]

Yeah it sounds like the igniter. That happened to me and I was unfortunate enough to get stranded lol. Except mine just did it once and that was it.

[batever]

Is any explanation forthcoming for why the failing igniter causes this tachometer jumping problem to happen?

[coletrain]

That happened to me, turns out it was a faulty alternator.

[CyborgGT]

Any way to diagnose for sure what it is on our own? I've had this problem since I've owned the car. The igniter's a bit expensive to replace; who knows how good a junkyard CB's is going to be.

[deevergote]

Junkyard igniters are cheap as dirt, though. If you get 3 of them, one of them is bound to be functional enough to determine whether or not that's the problem. Then you can trust that one until it fails, or go pay the money for a new one, KNOWING that it's going to be the solution you need.

As for why... I honestly don't know... but many people that have this issue have found that replacing the igniter fixes it. Myself included.