I have a 95 tacoma with the 2.7 and my truck is having problems idling. this started 2 days ago and getting worse. I only have this problem on a cold start or if I let it set for a few hours. My truck idles at 1000 rpms on a cold start and once it warms up it idles at about 800 rpms. Whats happening is it will start at 1000 rpm drop to 800rpm then keeps dropping and my truck will shake then the engine dies. If I give it gas it will temporally go away.