Alright, well iv somewhat had this problem for awhile now but it got worse now. i drive and the speedo would bounce randomly sometimes and most of the time it would just act normal.
It occasionally does it but now my odometer goes off.. when i start the car i see it and how many miles bla bla, but after about a minute or less it goes off and doesn't come back on pretty much until i park and it still goes on and off not rapidly.

Also i left work today, got on the nice empty highway, wot to about 110 then let off.. looked at my PFC and just curious looked at the speed and it said my max was like 90km/h which is 55. then cruising at 70 it says im going 24km/h

Thank you, for taking your time to read and help me

 

bump.. been waiting all day for a reply guys

 

no idea, were you for sure going 110? it might just be the sensor is fucked up.

 

i had a similar problem with my odometer but after I got a new harness I have not seen the problem come back in three months

 

or about 110 anyways, you sure your speedo wasn't just saying it was going that fast? just making sure it felt like 110

 

the needle went up to about 110 before i let off but the pfc said otherwise.. and i got a new engineharness about a two year ago. also i got a rebuilt from pettit 2 months ago, but i also had the problem before the rebuild

 

hmm... get a gps or borrow one to see what your actual speed is.

 

i have one, it is off by a little. like if im going 40-45 im still in the 30s range

 

that's not a little, what about when you're going like 70?

 

ill let you know tomorrow. didnt take the car out today.. but i bet its still going to be off

 

Take a peek at the back of your cluster. I'll bet you see bubbled capacitors and/or corroded joints.

 

and how would i go about fixing that

 

There are many threads on this issue. Do a search and you will find what you need to do. They cover, in detail, cluster removal, which capacitors to replace, and how to replace them. From what I've read, the wrong speed being displayed on your PFC is normal when the speedometer suffers this problem.

Steve

 

I'd probably just replace the whole cluster with a Spirit R .. if I could find one.

 

nah i would want to keep it 93 with the original miles on there... but took the car out today an now the odom seems to be ok... did a gps test and its about 2-4 mph off.. also i noticed the pfc reads fine now that the odom is on but when it twitched off once it was off.