Having problems with your Pontiac Grand Am ?

Car wouldn't start and had to reset security code with key. But, now the car will drive but it will just dies and I have to turn it off and restart it. Very dangerous when driving. A mechanic told me the tumblers are loose in the ignition. Could this be it or any other idea?

Posted / edited by AnonymousUser on : 18-06-2018

Answers :

The ignition switch it self may be going bad and may need to be\015\012replaced. If you have many keys on your key chain, this will promote\015\012the ignition keys to fail. The ignition switch's job became more\015\012complex as accessories like\015\012radios, electric windshield wipers and heater blower motors were added\015\012to vehicles. Moving beyond its original role as a simple on-off switch\015\012for the engine's ignition system, the ignition switch was also designed\015\012to supply electricity through an accessory position on the switch. This\015\012allowed accessories to function in a key-on, engine-off situation\015\012without overheating and oxidizing the contact points in the engine's\015\012distributor. As more accessories like power windows, power door locks,\015\012power seats, air conditioning and electronic automatic transmissions\015\012were added, the ignition switch's job became even more demanding.

Today, the ignition switch is a complex device that powers numerous\015\012electrical and electronic systems throughout the vehicle. In fact, the\015\012newest version of the conventional ignition key is an electronic device\015\012that identifies the driver and allows him to activate the starting\015\012system on demand.

Most ignition switches incorporate spring-loaded, sliding contacts to\015\012transmit adequate amperage to individual fuse and relay circuits. As\015\012these contacts begin to wear, they may lose their ability to make\015\012perfect mechanical contact. In other instances, they may begin to\015\012oxidize due to heavy amperage flow. In either case, the contacts begin\015\012to develop electrical resistance that reduces amperage flow through the\015\012ignition switch.

Very few ignition switches fail catastrophically. Most begin to fail\015\012intermittently and are usually sensitive to temperature and humidity.\015\012If the internal sliding contacts are heavily greased during assembly,\015\012the grease may begin to harden and inhibit mechanical contact during\015\012cold weather. If the switch fails during heavy accessory loads, the\015\012internal sliding contacts may have become heavily oxidized or succumbed\015\012to heat distortion and loss of mechanical integrity. In any case, most\015\012ignition switches give ample warning of an impending failure via\015\012intermittent ignition or accessory operation under various conditions\015\012of temperature and electrical load.

Good\015\012luck and hope this will lead you to addressed the issues your having\015\012with your car. Keep me posted, be glad to know you got your car running\015\012100% again soon.
Repair Help & Product Troubleshooting for Pontiac Grand Am

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