my speed odometer work but works weirdly. the MPH is off about 10mph. so if i go 15 mph, speed odometer show 25mph. if i go 10 mph, speed odometer show 20mph. ect. how can i fix this? has anyone had this problem before.

 

The tach works because the tach and speedo get their signals from two completely different places. Have you changed and gearing or drasticly changed tire/wheel size?

 

what i change was the whole cluster. i didnt change tire or wheel size. but what do you mean "changed and gearing"? i thought it would be "plug-n-play" but i guess not.

 

What is the car? (year/make/model)

Which engine?

Is there a CEL? (check engine light)


Answer all of these questions for better help!

 

I meant have you changed ANY gearing... What cluster did you swap in?

 

i have a 94 Integra RS 2 door (B18B1) with no check engine light on. i also did not change anything on tranny or motor. i bought the cluster from someone on craigslist. i knew it was from an ls/rs dc2 because it redline at 6900 rpm and look exactly like any other cluster from ls/rs dc2. i try to reset the car by pulling out the negative on battery but that didnt work. any suggestion what else i can try? thanks HT

 

Read the title again "RPM works, speedometer doesn't.", rpm (as in tach) works. He is asking why his speedo is off, not about a non functioning tach.

His tach DOES WORK, it's the speedo that's off by 10mph. Drastically changing tire size, or gearing affects it.

 

My apologies, I somehow got very mixed up or mis-read.

I agree with what you are saying.

 

Lol It's all good I figured you were, I was wondering why you kept saying tach haha

 

did you have this problem before you changed the cluster?

 

the gas meter didnt work so thats why i put the new cluster in. before that, the speed odometer work normally but now since i put another cluster in, the speed odometer is off and gas work. thanks HT for all your help.