In the past few days, I have been experiencing more and more electrical issues with my 40th Anniversary GP. It has 202,000 miles. I installed HID Spyder headlights in 2007, with the upgraded wiring harness. There has not been any other mods done to the car involving the electronics.
The battery is a Optima red top, manufacture date May, 2013
The original alternator crapped out back in December of last year. The new one has been working fine. The charging system light has not come on.
Here are the issues I have been seeing recently:
- the horn will sound one time for like 2 seconds, then it will stop. This is a very rare occurrence, happens about 2 times a year. Most recently, it went off last week for a few seconds, then stopped.
- A few times I noticed the high beams would not work. All other exterior and interior lights worked as usual. I checked all connections and could not find anything wrong. I kept trying the high beam switch to no avail. Then, the next time I drove, the high beams worked normally.
- A few days ago, I noticed the DIC went off, and the gauges stopped working, and the power door locks activated. Then, after a few seconds, they started working again. This happened just one time. Then, last night, same thing happened with the DIC and gauges and power door locks, and the heater and radio went off, but this time, the SRS air bag light came on and stayed on. Then, after a few seconds, everything worked properly.
I have done searches for these issues and looks like the problem could be a bad ignition switch.
Also, I have checked the battery cables for proper connections and all is well. I checked the grounds and all are tight and clean.
Also checked the main wire going to the alternator and it is tight.
I have not had either of these tested. I don't believe there is anything wrong with them.
On top of all this, the tensioner pulley bearings have been making noise, and yesterday, it got really noisy. I am putting on a new pulley in a few hours.
But, concerning the electrical problems that I stated, do you believe it is the ignition switch?
Today, I need to replace the tensioner pulley. Then I have to drive the car about 50 miles.
In your experience, if it is the ignition switch, is there a chance the car will shut down completely?
If so, what could I do with the ignition switch to get the car running again?
And last, where can I purchase a new switch?
Thanks for reading
