2000 Galant V6 Electrical Failure for Electrical Experts
The Problem - Charging System Malfunction
2000 Galant V6 Electrical Failure
Symptoms:
1. Battery drains down from 12.6V to 6V in 40 miles.
2. Below 30 mph the car starts shifting erratically and down shifts hard.
3. Idle drops to sub 900 rpm.
4. SRS and Antilock warning lights come on but functionality remains 100%.
5. Tachometer and speedo stop working.
6. Directional turn signals click but do not light.
7. Temp gauge reads low temp but external engine temp reading remains normal.
8. No Charge Light. (Battery light on dash)
9. Car dies and won't start.
Remedies already applied (Some were a matter of scheduled maintenance)
1. New battery
2. New alternator
3. New belts
4. New power steering pump
5. New battery terminals and negative cable
Current status
1. Auto parts store recharged battery and I reinstalled.
2. They checked for ODB fault codes – None were recorded. (Likely erased at battery removal)
3. I noted that the winding on the new alternator seemed to be dark, like it was burnt or over heated. (Output was checked and it was determined that the internal regulator had fried.) This was the first replacement.
4. Car was driven home about 3 miles and parked.
5. Battery voltage checked 18 hours later. Reading 12.45 volts. Not draining over night.
6. Car starts fine.
7. Took apart, inspected, tested and re-loomed wires from starter and alternator to battery.
8. Checked all ground locations for proper contact.
9. Checked charge indicator bulb. Not blown.
10. Checked all fusible links in relay box.
11. New alternator installed X2. (After original alternator and replacement passed bench test I tried them both in car with the same symptomatic results)
12. Recharged battery and tested voltage. Reading 12.89 volts at off.
13. Terminal voltage reading at idle is 12.45 volts.
14. Battery light still does not come on when ignition is turned on. Does not come on when car is running either. No other dash lights at issue.
If you have run across this problem and tried something other than what I have done, please let me know your secret. I have had a dome light failure that shut the car off before, so I am prepared for some ridicules fault/fix to work around another Mitsubishi engineering failure.
If you decide to accept the chall...., you know the rest.
The recalls are never broad enough to include your car
Quote:
Originally Posted by
Hevymetalg
Isn't their a recall in that front wiring harness issue?
I'd look up the recall in your car.
Sent from my iPhone using Tapatalk
There is a recall. But the dealer said it was not on my car. The part is $200. No discount from Mark Mitsubishi. As a dealer and Mitsu as a mfg they suck. It looks like I will have to remove the harness and re-loom one properly. It beats putting the same piece of crap OEM part back on. Mitsubishi engineers are the worst in the business for strait up stupid workmanship. No wonder they are going out of business.
Update to failure analisys
Quote:
Originally Posted by
FooseGalant
I'll give this a shot and let you now. Thanks for the help.
I removed the front harness and tested all the leads for continuity and they checked out fine. Rewrapped the harness and replaced all the mounting / routing fasteners. I checked all the ground locations for proper contact. I removed the cluster and tested the bulbs and locations. I replaced the charge bulb with a known working bulb without curing the problem. The only item left to check is the CPU. I will have to take this to somebody as it is beyond my knowledge. It appears the cause may have been the replacement alternator with a bad regulator. When it failed it spiked voltage to the CPU and damaged it. This is only a guess though. If anybody has any more ideas please let me know. I guess I need a good electrical person in Phoenix Arizona. No, I will not be taking it to Mitsubishi and there is no depth of intelligence at that agency anyway. They just replace parts using the shotgun method. I do not have that kind of money to replace parts that are not bad because the dealer can't diagnose problems effectively.
Thanks for listening. "This car will self destruct in 5 minutes by design"
Workig the electrical problem
Quote:
Originally Posted by
Johnnytankers
I am having similar issues with my 1999 Galant ES V6. Just wondering if u were able to resolve this issue and how. I also live in Phoenix, AZ so if u were able to help that would be awesome. Thanks
Hi, Just getting back to this issue. Battery charged to 12.44 V. Cables are both off the battery terminals. I measured the voltage across the (-) battery cable and the (+) battery pole with a meter and got 5.12 V reading. Reversed the measurement for the other cable and got a 3.68 V reading. I would have thought that the voltage should both be 0 V.
Off to do more research. Let me know if you came up with anything for your issue.
Paul