By the ALLDATA Community Automotive Diagnostic Team
By ALLDATA Community Automotive Diagnostic Team
Occasionally a customer will drop their vehicle off with a tire that’s slowly losing air pressure over a period of days or weeks. The Tire Pressure Monitor light is glowing and the customer is tired of adding air. Now it’s up to you to find out why.
“I hear a noise!” That’s a customer complaint that might encourage you to suddenly take a long lunch. But before you run off for a BLT, check a TSB! Conditions, such as random noises, are often already known by the manufacturer, and a solution may be available.
Diagnosing an unfamiliar condition without OEM information can take time and cost your customers money. You may save both time and money by first consulting a vehicle manufacturer’s technical service bulletins (TSBs).
Some drivers have been leading their vehicles to the gas pump, but can’t seem to make the thirsty cars drink. Several 2004-2009 Chrysler® Group models are known to be hard to fill with fuel. Sometimes the fuel nozzle shuts off repeatedly.
A running compression test or dynamic compression test is an important, but little-used and often overlooked engine diagnostic tool. Why is this test so significant? It can be used to pinpoint the cause of a misfire when all the usual tests return normal results.
By Ed Dorowski, ALLDATA Editor Jeff Webster, ALLDATA Technical Writer
Some Mazda® B-2500® drivers may complain of a high idle in vehicles with a manual transmission. This may be caused by a poor electrical connection at the wire harness to the throttle position sensor (TPS). A service kit is available to resolve this concern. Correct the condition by following the steps in this Tech Tip.
Ed Dorowski, ALLDATA Editor Jeff Webster, ALLDATA Technical Writer
Diagnosing a repair can be challenging. In the case of a manufacturing defect, a solution can be especially elusive. For any diagnosis – difficult or relatively simple — manufacturers’ repair information is the solution for timely and profitable repairs.
Before you start your diagnostic investigation of any driver’s complaint, make sure you are not wasting time looking for a fix that already exists. Accessing manufacturers’ repair information, including