Hello everyone,

I am new to this board, but would really appriciate any advice!

I have a 95EX V6 with approx 125,000 miles (I bought it 8 months ago, but I know it had its 100,000 mile maintenance done), and up until a week ago have had no problems at all! However, recently the tachometer has begun behaving erratically.

Basically, the issue is that the tachometer begins to gyrate wildly. It starts off as just a minor twitch, but can be as bad as going from pegged on 0 to 4000rpm and back again in less than a second. Even when pegged on 0, the car still runs, and I can accelerate just fine. However, sometimes when it transitions to the 0 mark, I can feel a momentary LOSS of acceleration! The tachometer never goes higher than it should be at for any given speed. I have not noticed any correlation between external conditions (heat, rain, etc) and the problem occurring. However, it has become more frequent in the past couple of weeks, and now occurs nearly every time I drive. Additionally, it sometimes takes up to 30 mile of driving before it starts, but sometimes it starts immediately, and once it begins, it won't stop until the car is left to rest for the night.

I am not very knowledgeable about cars, but I want to know what the problem might be so that I don't get ripped off by a mechanic, plus I already took it to a couple of places and they didn't tell me anything specific.

I really don't know what to do.

Thanks for any help you can provide!

Dmitry

 

Sounds like a faulty vehicle speed sensor (VSS). It simply sits on the transmission and tracks how fast you're going. Your tach runs off a different sensor. Should be pretty cheap and easy to do yourself, I think it only takes two bolts. Hardest part will probably be just locating it.

Do a search for VSS on here (might have to click on archived data) and see if the symptoms match what you're experiencing.

 

Tachometer in the 95 v-6 runs off the coil, there is a service news regarding irrattic tachometer(need a new ignition coil).

 

****, sorry I'm dumb...misread his entire post. I thought it was the spedometer acting up, my bad.