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Joined: Jul 2004
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mrcb
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mrcb
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2004 Toyota Celica

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Posts: 5
Wisconsin
Jul 11, 3:28pm - #221400 
Is your speedo correct? Four 04 I have tested are not.

Hello,

I just bought a new 04 Celica, and was given some teasing when I first got home by the wife about how I babied it all the way home.

Come to find out the speedo is off by 4 mph slow. So as my wife followed me home at what I thought was 70 I was actually doing 65-66.

Basically the dealer will not fix the problem and I have done research on the topic, including test driving three other 04 celicas (all different dealers) and they all have the same problem. Also talked with other 00-03 owners and they all stated the same speed difference but mostly more since the tire wear had increased the problem on used cars.

The dealer wanted radar confirmation, When I had it done, it showed that when the needle is touching the 70 mark on the speedo the car is actually doing 65. Also found out that Wisconsin state law states 4% spread on accuracy but dealer will not do anything. 4% at 65 = plus or minus 2.6mph

Simple tests. (Odometer had tested correct just speed indication is not correct) use odometer and time 1 mile flat surface road. If you have a ten mile flat section you could test at 65 should equal 9 min 13 sec. I used speed calculator to help with different speed time calculations here. http://www.gazza.co.nz/distance.html.

Thanks for any Ideas to help the situation.

Mike

Joined: Dec 2003
Posts: 245
silverceli21
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silverceli21

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01 Toyota Celica GT

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ma
Jul 11, 7:04pm - #221401 
check tire pressure if thats good then try getting a cop friend for radar..lol


SiLvErCeLi
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ragingpaseo
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ragingpaseo
2003 blue Toyota Celica
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2003 Toyota Celica

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towson, md
Jul 11, 7:13pm - #221402 
simple way to fix this, drive faster... rofl

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mrcb
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mrcb
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2004 Toyota Celica

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Posts: 5
Wisconsin
Jul 11, 7:22pm - #221403 
I checked Tire pressure first thing and it was at the 32 specified on the door. When I brought it in the dealer pumped up to 44 as per the tire max and stated it was better with their tester showing it was off by 3 mph at 60.

Dealer gave me diag sheet from their book that shows 250 ohms between four connectors on back of speedo (A to C and B to D) to see if speedo needed replacement as per their docs. I check it out and it was ok.

Dealer called their support in California and they stated that the car they tested there was off as well but nothing can be done.

Thanks for the reply.

Mike

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Posts: 5
mrcb
New Member
mrcb
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2004 Toyota Celica

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Posts: 5
Wisconsin
Jul 11, 7:27pm - #221404 
Mike
I love to drive faster but have Four other cars that are for pleasure and this is a work car. 500 1000 miles a week. I would hate to get a ticket because Im accustom to driving faster when in the pleasure cars.

Thanks for the reply.

Mike

Joined: Dec 2003
Posts: 245
silverceli21
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silverceli21

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01 Toyota Celica GT

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Posts: 245
ma
Jul 11, 7:28pm - #221405 
hmmm isnt the 04 model using an electronic accelerator confused this might affect it somehow either that or toyota made a small booboo


SiLvErCeLi
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mrcb
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mrcb
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2004 Toyota Celica

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Wisconsin
Aug 24, 8:49pm - #221406 
Basically I have found over 10 celicas between 2001 and 2004 that have the speedometer incorrect by between 4 - 7 % Mine running in the average of incorrect speeds at 7 % incorrect. Actually I have only spoke with 10 Celica owners I have not found one Celica to be correct for speed indication.


This means all you that are boasting about doing 140 or better in a Celica better subtract 10 off the top since thats about the average incorrect Speedo reading with brand new tires. If your tires are used subtract from there.

Frustrated that nobody cares about this!!!. Toyota should fix this.

Mike


Mike

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slidr
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slidr

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2000 Toyota Celica

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Saint Louis, MO
Aug 24, 9:02pm - #221407 
Taken right from the shop manual...

1870195225-celicashopmanual2_Page_0872.sized.jpg

Aqua Teen Hunger Force...number one in the hood, G
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slidr
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slidr

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2000 Toyota Celica

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Saint Louis, MO
Aug 24, 9:04pm - #221408 
This might also explain why some peoples' lift kicks in at different locations, or at least why they think that. wink

1870195227-celicashopmanual2_Page_0873.sized.jpg

Aqua Teen Hunger Force...number one in the hood, G
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slidr
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slidr

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2000 Toyota Celica

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Saint Louis, MO
Aug 24, 9:06pm - #221409 
Originally Posted by mrcb
Basically I have found over 10 celicas between 2001 and 2004 that have the speedometer incorrect by between 4 - 7 % Mine running in the average of incorrect speeds at 7 % incorrect. Actually I have only spoke with 10 Celica owners I have not found one Celica to be correct for speed indication.


This means all you that are boasting about doing 140 or better in a Celica better subtract 10 off the top since thats about the average incorrect Speedo reading with brand new tires. If your tires are used subtract from there.

Frustrated that nobody cares about this!!!. Toyota should fix this.

Mike


Mike
This is actually an issue with any car you drive.

Speedos are highly inaccurate over certain speeds. Also, tire radius also affects your readings.


Aqua Teen Hunger Force...number one in the hood, G
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isaac
ECelica Admin
isaac
2001 Absolutely Red Toyota Celica GT
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2001 Toyota Celica GT

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Los Angeles, CA
Aug 24, 9:11pm - #221410 
https://www.celicahobby.com/ubbthreads/thread.f_57207_0_collapsed_5__1.html

Your stock speedometer is fairly accurate up to around 100 Mph. After that any speedo that can't be calibrated is not very accurate. It could be off by as much as 5 - 10 MPH.

This is especially true if you are running aftermarket rims / tires or are using an aftermarket Ring & Pinion set like 3.55, 3.73, 4.10's etc. Even if you get the correct speedo gear for your new ring and pinion set, your stock speedo may still be off, based on your rim or tire combo. This is true for all types of cars.

For accurate readings in "race applications" the stock speedometer (and all the other stock gauges) are virtually useless. You'll need to upgrade to VDO (or another brand) of gauges that allow you to calibrate them.

For example, you can calibrate a VDO race speedo by simply pressing a button, driving one mile, then pressing it again, the speedo will compensate for rear end gear ratios, speedo gearing, windup, etc. You must also calibrate a speedo often to compensate for many factors to insure accurate readings (in racing).

The stock gauges are fine for street applications and general driving, but for road racing / drag applications and to ensure accurate measurements, we recommend you upgrade your stock gauges. Just to note, 99% off all folks out there will be fine with the stock gauges, we are talking about sponsored race applications (or folks that want accurate readings) only.

...

wave

Just to note, 99% off all folks out there will be fine with the stock gauges, we are talking about sponsored race applications (or folks that want accurate readings) only.


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BlueRice
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2004 Toyota Celica

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Los Angeles, CA
Aug 25, 12:10am - #221411 
I've got a 2004 also, and you're right, the speedo does seem to be off a bit. I have a handheld Garmin GPS I keep in the car, and one of its functions shows your speed. I would say that for me, at about 70 indicated on the GPS, the Celica speedo reads about 66.

If it makes you feel any better, according to the GPS, the 1994 Acura Integra I came out was only a tad more accurate, if at all.

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AznKhaos
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AznKhaos
2003 Spectra Mica Blue Toyota Celica GT
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2003 Toyota Celica GT

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Central California
Aug 25, 12:17am - #221412 
dam..its off on both gts and gts??


it doesnt matter wat u drive or who u driving against its all about how you drive
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Elec-FuYu
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Elec-FuYu
2003 Silver Toyota Celica
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2003 Toyota Celica

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B.C. Coquitlam
Aug 25, 12:25am - #221413 
Originally Posted by AznKhaos
dam..its off on both gts and gts??


i take that as a GT and GTS... lol!!

and to answer ur question, yes i think so.


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oas
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oas
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Aug 25, 4:22am - #221414 
allllll speedos are a little of

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fonz182
Pimpin aint easy
fonz182

Pimpin aint easy
03 Toyota Celica GT

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Hayward / UCD, CA
Aug 25, 11:43am - #221415 
Originally Posted by oas
allllll speedos are a little of

exactly or in my case off by a lot after taking off the needles to paint them angry angry

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gearSHIFTx
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gearSHIFTx

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1990 Toyota Celica

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Irvine, California
Aug 25, 1:55pm - #221416 
Originally Posted by mrcb
I checked Tire pressure first thing and it was at the 32 specified on the door. When I brought it in the dealer pumped up to 44 as per the tire max and stated it was better with their tester showing it was off by 3 mph at 60.

Dealer gave me diag sheet from their book that shows 250 ohms between four connectors on back of speedo (A to C and B to D) to see if speedo needed replacement as per their docs. I check it out and it was ok.

Dealer called their support in California and they stated that the car they tested there was off as well but nothing can be done.

Thanks for the reply.

Mike


Sounds dumb for a dealer to do. You shouldnt fill up the tire to what the max it says on the tire. You should only fill it up to what is says on the door or in the owners manual. Sounds like the dealer is just trying to hide the fact that they can't fix the speedo. If you over-inflate the tire, of course its going to change the speedo, same case if you under-inflate. And if you change it to the max, you risk over-loading your tires and premature failure.

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slidr
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slidr

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2000 Toyota Celica

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Saint Louis, MO
Aug 25, 1:59pm - #221417 
Originally Posted by gearSHIFTx
Originally Posted by mrcb
I checked Tire pressure first thing and it was at the 32 specified on the door. When I brought it in the dealer pumped up to 44 as per the tire max and stated it was better with their tester showing it was off by 3 mph at 60.

Dealer gave me diag sheet from their book that shows 250 ohms between four connectors on back of speedo (A to C and B to D) to see if speedo needed replacement as per their docs. I check it out and it was ok.

Dealer called their support in California and they stated that the car they tested there was off as well but nothing can be done.

Thanks for the reply.

Mike


Sounds dumb for a dealer to do. You shouldnt fill up the tire to what the max it says on the tire. You should only fill it up to what is says on the door or in the owners manual. Sounds like the dealer is just trying to hide the fact that they can't fix the speedo. If you over-inflate the tire, of course its going to change the speedo, same case if you under-inflate. And if you change it to the max, you risk over-loading your tires and premature failure.
If you want good gas mileage, or have aftermarket rims, then you may want to inflate the tire to what it specifies on the sidewall. As long as your car falls within the tires maximum load handling capabilities.


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CaLiGTS
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CaLiGTS

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2001 Toyota Celica

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Bay Area, NorCal
Aug 25, 2:05pm - #221418 
I heard slidr has a tangerene speedo rofl rofl spineyes


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RedSunCelica
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RedSunCelica

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1995 Toyota Celica

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San Diego CA
Aug 25, 4:26pm - #221419 
toyota wont do anything to fix it becuase it is within a certain degree of error. the newer camrys also have this Speedo problem too along with any other 2000+ toyota.


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sickcelica696
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sickcelica696
2000 Liquid Silver Toyota Celica
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2000 Toyota Celica

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Annapolis, MD
Aug 25, 4:29pm - #221420 
my 2000 gts is off a bit, at 40 on my speedo,my cop friend clocked me at 31, at 70 it was 63

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ArumnDark
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ArumnDark
2004 Silver Streak Toyota Celica
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2004 Toyota Celica

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Independence, California
Aug 25, 7:22pm - #221421 
I checked out the speedo in my '04 GTS today.

I drove exactly 1 mile at 60 MPH, and the time came out to be almost exactly 1 minute (1:00:87, to be exact).


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mrcb
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mrcb
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2004 Toyota Celica

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Wisconsin
Aug 25, 9:19pm - #221422 
Hi all

Thanks for the support, I think its a conspiracy since I just bought my wife a bug and its speedo is off by the same amount. Weird those two O4 vehicles are off by 7% but my Porsche buddy states the German cars have been wrong for a long time. So it does not surprise him that the bug is wrong on its speed. Even though its Mexican car.

Allot of people state that this is normal but I have 94 Saturn and 94 Bonneville and 78 grand Prix and 97 Yukon that all the GPS readings state the Speedo is correct. I tested my brother-in-Law Mercedes, and it is also correct as per GPS.

Seems like something maybe going on with newer cars for fuel mileage since I do not get very good MPG when I compensate for the mileage difference on the Speedo.

I just wish it would have been better situation at the dealer. I will not go back to them since there was some heat over it.

Over 10 grand miles on the car in the first three months and its still a great car to be in and drive.

Thanks for all your replies, the Celica group is surly a bunch of great people.

Hey wave if you see a Cel in Wisconsin. : )

Mike

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Posts: 186
CaddyShack
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CaddyShack

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1991 Cadillac Seville

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Southern California
Aug 25, 9:29pm - #221423 
well i dont think you should drive over 65 anyways because you have to break in the car... arent there some digital speedos that i can buy in the aftermarket department? ive seen some cars with lil boxes in front of their gauges so i think thats it... would rims fix this problem?


another honda kill story is always welcome
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