Owners Manual
Page 169
... operates properly only when the engine is running . A dirty air cleaner, improper valve clearance, dirty plugs, dirty oil and grease,brakes not adjusted, etc. This not only lessens weight but also puts an extra load on schedule, and if you often drive under severe conditions, see that your vehicle... free from mud, etc. Avoid hitting the curb and slow down hills. '99 Tacoma (U) D Keep the front wheels in top shape...
... operates properly only when the engine is running . A dirty air cleaner, improper valve clearance, dirty plugs, dirty oil and grease,brakes not adjusted, etc. This not only lessens weight but also puts an extra load on schedule, and if you often drive under severe conditions, see that your vehicle... free from mud, etc. Avoid hitting the curb and slow down hills. '99 Tacoma (U) D Keep the front wheels in top shape...