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Chevy Aveo Speedometer - READ ONLY
Last post on Feb 19, 2008 at 6:32 PM
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Chevrolet Aveo, Transmission, Sedan
#5 of 14 Re: Thanks [luckins]
Feb 18, 2008 (3:42 pm)
I don't know why there is such a problem with speedometers reading high. Of the last 4 cars I've driven, 3 had speedometers that were inaccurate.
This isn't exactly a high-tech dilemma. It's probably just a little plastic gear that needs to be the right size, so what's the problem?
Feb 18, 2008 (5:58 pm)
Yeah, I hear that some of them are also just a magnetic connection between the dashboard and the cable to the transmission or wheels, too. But, that's what several studies have said, I don't remember the exact places, but it was several.
I know that my last 2 cars that I've owned had very accurate speedometers, too. In fact, I was "paced" by a motor officer when I had a Ford Granada and when I went 1 mile over the speed limit before he waved me to slow down.
I just noticed, today, that my local freeways don't have mile markers on them. I have to go way out of town before I start seeing them.
Feb 19, 2008 (7:40 am)
I just found out that there is a TSB relating to incorrect speedometers on the year and model that I have. I am taking the car in for a timing belt change in a couple of months, and will bring this up to the dealer. Hopefully, having a TSB number or copy of the TSB will convince them something needs to be done if it's really is inaccurate. I will let everyone know how the road test went when I can do it. It's not a major thing, but I like my speedo to be correct as possible.
#8 of 14 Re: TSB [luckins]
Feb 19, 2008 (11:03 am)
What year is your car and does the TSB include every vehicle in that model year?
Feb 19, 2008 (11:29 am)
The NHTSA number is 10018606 and seems to cover all models. I have a 2004, but it seems to cover up to 2006. I haven't been able to find out all the details, yet, but I'll dig around. It seems to be a recent TSB. I also get a number 3774, I think, too. The problem is that you have to pay to get the full reports.
#10 of 14 Re: TSB [luckins]
Feb 19, 2008 (12:16 pm)
Thanks. Went through the entire list of TSB reports for my model year. Almost all the issues I've had are addressed, but the dealers have been unable or reluctant to fix the problems.
Doesn't matter to me now as its got high mileage and was restyled by a snow plow in December. The inevitable progression from shiny new car to beater.
#11 of 14 Re: TSB [wave54]
Feb 19, 2008 (1:39 pm)
Yeah, I think it's going to be a pain convincing them on this one because the car was "certified" after the date that the bulletin came out. And, I guess the fix is to replace the instrument cluster. I wonder how long they would take to do that?
Since I think it's about 10%, I may just drive with the speedometers at about 10% higher unless I know I'm going through a photo enforced zone. I haven't checked it against mile markers. I have checked the odometer against the clock and it reads exactly 1 mile at 1 minute when I drive 60mph and I've already confirmed it's accuracy.
It's possible those speed signs in my neighborhood aren't working right.
#12 of 14 Re: TSB [luckins]
Feb 19, 2008 (3:34 pm)
Every time I see one of those portable radar set-ups on the side of the road, I check my speedometer against it. The speedometer is ALWAYS reading high by about 9% -- that has been consistent over years and many thousands of miles.
The TSB states that the readings are 7-9% high, so that's right on the money. I got used to driving at a 5 mph faster speed (by the speedometer) and I've never had a problem.
#13 of 14 Re: TSB [wave54]
Feb 19, 2008 (5:06 pm)
My o5 hatchback also showed a faster speed than actual speed, showing about 61-62 mph at actual 55 mph. Like you, I just adjusted my driving habits to include the speed differential...
#14 of 14 Re: TSB [wave54]
Feb 19, 2008 (6:32 pm)
I am wondering if the sign is off because when I went walking today, I went past it and all the cars seemed to be going about 10% lower than usual. The speed limit on our street is 35, but most people go around 45 to 50 MPH. But, today, the sign read most of the cars around 37 to 42 even when I could tell the car was really hauling.