Select your product (Repair/Collision) at left. Tech tips are an important way to address common problems in collision and repair shops. Those included here address vehicle-specific repairs for known mechanical issues, but also include best practices for how to use repair procedures to increase revenue in collision shops and more.
By Ed Dorowski, ALLDATA Editor
and Jeff Webster, ALLDATA Technical writer
CONDITION: Some General Motors truck owners may comment on a popping/snapping noise from under the vehicle at idle or immediately after the vehicle is shut off. Some popping/snapping noise from the exhaust system during cool down is a normal condition. The noise may be intermittent depending on the outside temperature and or temperature of the exhaust system at the time of testing.
Some Ford® Expedition® and 1998-2002 Lincoln® Navigator® vehicles equipped with four-wheel air suspension, may exhibit repeat air compressor drier failures. The drier cap may become detached from the drier body, or the drier body may be broken at the neck near the compressor head. This may be due to incomplete or incorrect system diagnosis that leads to replacement of only the original air suspension compressor, despite the fact that the compressor is not the root cause of the concern. Compressor failure in these instances is only a symptom of an underlying system problem.
Created by experts, for experts, ALLDATA is the leading provider of OEM service and repair information to the professional automotive service and collision industries. Trusted worldwide by over 300,000 technicians in 80,000 shops, ALLDATA provides repair and collision shops a suite of products to increase shops’ traffic, improve processes and repair quality.