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Hey everyone
I hooked up a new radio and I think it's fine. But the problem comes from after. At first the speedometer and odometer wouldn't work when the radio was on. Now it won't work at all.
What might be the cause of this? I check all the fuses, replaced a bad one and it's still happening. But I did get the illumination lights back.
Thanks
Anyone? The only thing I can see is the speed sensor. but I want to eliminate all possibilities before I do that.
unplug your radio and put your stock one back in, some radios on the galants have the speedo wiring through them (if i remember correctly)
Ok, tried that, no change. But, I thought that would be the case since when I first installed the radio, the speedometer and odometer would work so long as the radio was off.
so let me get this straight. the tachometer works?
Yes, the tach works fine. Everything else works perfectly fine except for the speedometer/odometer. The odometer displays the mileage, but doesn't register new miles. They did work briefly after I installed the radio, so long as the radio was off. I made sure the wiring was correct on the radio, there was an issue with one of the wire caps breaking off and touching some metal. I corrected that, but it didn't help.
lose the wire caps. you're wiring your car. not your house.
They weren't those kind. They were crimp on audio connectors meant for things like this. I just didn't put it on well, I was doing the whole thing with a flashlight.
I can't think of anything else but the vehicle speed sensor. I just want to know what else to look at before I spend the money on the part.
check your fuses.
I checked them once. There was a blown fuse for the taillight replaced it already. I will check again in the morning.
Sounds like the speed sensor then..
check both fuse boxes.. crimps arent supposed to be used in cars period.. and theres no speed sensor wire in the radio harness
Ok, I'll check them both again. The prior owner of the car put in a stereo and had taken off the connector off the harness and wired it up. I had to obviously do the same. Everyone I knew told me that the way I did it and what I used were the best options short of soldering the connections together, which I wanted to do. I just don't have the means to do it at my apartment.
The issue comes form me being a bonehead and forgetting to detach the battery before I did the install.
I'm also going to check the speed sensor. Someone one another forum had the information about what parameters I'm looking for to check it.
I checked all the fuses again, nothing there. I'm trying to test the vehicle speed sensor. But I can't seem to find it. In the location where a guy I'm talking to says it is, there's nothing but a flat plate bolted in it's place and it's definitely where he's talking about. The only other thing I found he says isn't it, but it does match the Haynes manual, but we all know how useless those are.
Ugh, anyone else able to help me figure that out?
If there is nothing but a flat plate, then you must have an 02-03 galant. 02-03's have internal speed sensors that are inside the tranny, if you friend that one, you gotta pull the tranny out and apart to replace it. I dont think the speed sensor is the problem, I think you fucking around with live wires is your problem, maybe you just fried the circuitry inside the gauge cluster and killed the speedo.
Have you ever removed your cluster before? There are two wire harness' that connect to it, one on either side. You need to find out which wires have the speedo signal and use a multimeter to test them out, thats the best way for you to check the sensors operation.
Ok, I'll look into that too. But would that affect the odometer too? Because the odometer displays what the mileage was fine but doesn't register new miles. I'm pretty sure they're from the same problem. But if they're on the same circuit why would the the odometer display anything at all? I might just wait until I get my good manual before I do anything else.
If I don't figure it out soon, I'm just going to take it in for a repair I don't have the money for. If it wasn't for the odometer I wouldn't give two poops about it.
I know I was dumb when I forgot to disconnect the battery. I do things like that occasionally because of anxiety and rush. But I think it would have happened when I reattached it anyway.
The odometer cant change because the computer thinks the car hasnt driven because of no feedback from the speed sensor. The odometer uses the data from the speed sensor to establish driving distance.Quote:
Originally Posted by willv28
Right, I get what you're saying. It's certainly possible that it is the circuitry to the speedometer. I just don't know why the odometer's digital display would be on at all if it was the circuitry. As well, not receive information if it wasn't the speed sensor that was the problem. All the other gages work. Most people have said it's classic speed sensor malfunction.
I'm pretty certain I'll be taking it in to the garage on monday or so. I can't drive it much on this busted odometer and I only have so much ability and means to fix it.
I drove for over a month with no gauges working at all, it was fine except for having no fuel gauge, if you need a new circuit board I happen to have one spare.
Well, Mr. JoeRad. Looks like you were right. Looks like the circuitry is messed up to the speedometer/odometer. I removed the cluster, took voltage readings. 5.5 volts was the reading....Then I turned the radio on. It jumped to 24.89 volts. Obviously the circuit board speedometer/odometer were fried.
Let me know what you can do about the part. But it's only $32 online, so that's not a big deal. I'll make sure the radio wiring repaired first though. But it seems wired correctly according the diagrams I have, oh well.
nice, at least you figured it out, nothing worse than fixing shit that aint broken to do process of elimination diagnostic.
Mine fried when I put LEDs in the gauges, got anew one and put the same LEDs in and it's fine, poorly made imo, any how what yearcis it I got a us 8G board
Don't worry about it. I put a brand new one on order for $30. I imagine the cost to get yours here plus something for you would be at least that.
PS - I found the problem with the wiring. There was a mistake in the diagram I used. So I thought it was done correctly. The actual result is that the radio's antenna power was pumping power into the speedometer circuit between it and it PCM. So, it had the system that took the vehicle speed and increased/decreased volume based on it. I don't think I did, but I hope it didn't damage the PCM. The power to the radio is cut now. I will rewire the radio tomorrow. I got my real manual and the correct diagram now. This time I went out and bought a cordless soldering iron and heat shrink tubing and will do it that way. I couldn't do it with my existing iron before.
yeah a butane soldering iron is the way to go, they are great.
if the car runs and drives and no cel's you probably didnt cause damage to the pcm. the pcm has its own fuse to protect it in case something like this happens.
Can i get a copy of that Diagram, my Clock keeps coming on showing strange time like 4:86 and also the circuit for the crusie control light burnt out again. the dude befor me re wired the radio and i think he fucked up
That seems to be a mitsi clock problem. Just take off the cover and take out the clock and resolder all the joints. Mine works fine now.Quote:
Originally Posted by JoeRad
This is most likely the radio itself. Here are the diagrams so you can check the wiring anyway.
http://www.2carpros.com/forum/automo...Galant02_1.jpg
http://www.2carpros.com/forum/automo...alant02a_1.jpg
^ im impressed with this new member
Ok, well the wiring for the radio is good now. Voltage to the speedometer is ok. Now gotta wait for the circuit board....
This also brought up an issue that I had from when I first bought the car. If you click on the dome light, the fuse for it blows after 10 seconds, sooner if you move the switch. Otherwise the door and on settings work fine. I never investigated this since the light is green and essentially useless anyway.
Zigen, no, I'm just a random schmuck who messes up all the time, lol.
Ok, FINALLY got the circuit board today, replaced it. Status is the same. Checked the voltages again, varied from 5-7 volts when the car was off and when it was in on position.
Everything seems to be good not electrical wise. Either I need to find which item is actually the speed sensor or I need to replace the whole instrument panel...
Well I gave up trying to figure it out. I'm taking it to my local garage next week. I can't seem to find what is wrong with it. Everything is getting the proper voltage. The only thing odd is the resistance on the grounds is too high, but I can't find any wiring issues anywhere. Oh well... Hopefully they can figure it out.
any luck with this problem? I installed a system in my car about 2 weeks ago and now I am having a similar problem. My speedo is working when it wants to then it goes flatline on me. I checked my wiring and it was done right. Secondly, speed sensors are a dealer only part? WTF!! Rip offs!
Hi guys!I have the same problem.Try to unplug you're radio unit and go for a ride with you're car and if the speedo works it's from you're radio.
Are there any updates to this problem? I just bought a car with this same problem lol
I just got a new radio installed on my '99 galant and the speedometer stopped working and radio went silent. Any ideas whats wrong? I didnt do it myself, I had it done at a car stereo shop.Quote:
Originally Posted by manoso
I have exactly the same issue with my 8th gen, 2001 Galant. Can anyone help me with a schematic that shows the complete wiring circuit from the trans to the speedo, ECU cruise etc?
Thanks all in advance.
Okay so I just had this happen to me and felt so doing and not sure why it how this works but it did. If you are using the wiring harness for an aftermarket stereo do not him up your dimmer wire.