Speedometer stopped working!
Drifting
Joined: Apr 2004
Posts: 1,453
Likes: 0
From: crystalriver Florida
Since were on the subject of a bad speedo, I just had a keisler 500 tranny put in and 2 shops are having the oddest time trying to install this calibration box, Both shops say they got it hooked up EXACTLY how the directions say, but there is no signal going to my digidash, the speedo is lit up and stays at "0", but doesn't recieved any signal when pushing the up/down buttons on the calibrator. A guy at a corvette shop gave up on it. Anybody have any suggestions for me to look at, I got an 85 and the speedo did work fine when I had the 4+3 in. But now it don't...The calibrator is out of the question to be broke, its the 2nd unit and it was Checked out to be fine when mailed out, course digital dakota claimed they never had a broke calibrator of that specific model.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Intermediate
Joined: Mar 2002
Posts: 48
Likes: 0
From: Naugatuck CT
92 convertible was running fine Mon-Tue-Wed. I started it Thur morning and SERVICE ENGINE light on. Speedo wouldn't read anything but zero. Engine hesitates on accel. Shorted A-B and got only SYS flashes. Shorted A-G and got codes: with small '1': C41, H41, H72, ---, with small '4': Err, then with small '9' got H65, H72, --- then small '1.0' I think this means that my electronic spark timing has a bad connection or bad box, or my ECM needs replacing. Any suggestions?
Thread Starter
Instructor
Joined: Mar 2005
Posts: 217
Likes: 0
From: 86 Z51 Coupe Branson,MO
Is it poss. to check the voltage on the connector.The one that plugs to the tranny.If so what voltage am I looking for?Where does this run?What does this connect to?Thanks 
