Alright i have a 88 firebird, TBI, WC T-5, And 118,000 miles on the car. Here is the problem. My speedo will work for 20-30 mins. before it starts to act up. In alaska i usually have to have the heater on, then after the heat has been on for a while the speedo will cut out intemittentaly. If i turn the heat off, and turn on the cold air it will start working after a min or two. Also tapping the dash under the speedo will get it to register if its not working. I was leaning towards a loose connection at the dash, but it is the heating of the dash that puzzles me If anyone has ideas of what to check, your insight will be greatly appreciated. - Russ

 

Bump! Anyone?

 

i have a speedo prolem too. its not hooked up now, but when i hook it up, i can go about 15 feet then the car will die. and the only way to get it to stop dieing is to pull the speedo cable out of the transmission. i have NO IDEA why!??!

 

curious, mechanical or electronical speedo? anything after 91 is electronic, 90 and later was mechanical. Just curious, because i have the same problem but mines mechanical kind of :P hehe

 

its a 92 so its electornic. theres so much **** wrong with it it wouldnt surprise me if it didnt have the original engine.trans. or computer