Technical
Diagnosing steering system noises Quiet cars create happy customers Screeching, whining, grinding and popping — all types of noises associated with the steering system! Unusual noises the result of steering system operation can sometimes be challenging to diagnose. In this article, we list a host of potential noise sources, with regard to steering column, power steering pump, steering linkage and related components that can contribute to the generation of unwanted and disconcerting noises.
By Mike Mavrigian
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he most common cause for power steering noise is low power steering fluid level. The resulting noise will likely be a whining that is heard when turning the steering wheel. A high-pitched or “screeching” noise is usually caused by a worn or misadjusted power steering drive belt. A grinding or popping noise may be caused by worn or damaged upper strut bearings, which may be heard when turning the wheels. This can often be misdiagnosed as a steering system issue.
correct type of fluid. Specific power steering fluids may be mineral based or synthetic, depending on application. Listed here is a guideline of the fluids recommended by various auto makers. Always check, as this can vary depending on the specific model and year. Acura Audi BMW Chrysler
Wrong P/S fluid In the “good old days,” it was common for ATF to be used in power steering pump systems. Today, it is imperative to use only the specific power steering fluid recommended by the vehicle manufacturer. Using the wrong type of fluid can create varied problems from aeration to pump seal damage. Using a “generic” “power steering fluid” that claims to be compatible for “all” systems does not guarantee proper operation. If in doubt, always check the service or owner’s manual for the
Daewoo Dodge Sprinter Ford/Lincoln/ Mercury GM Honda Hyundai Jaguar Jeep Infiniti
50 | ASP August 2017
Honda P/S fluid Pentosin CHF 7.1, CHF 11S or CHF 202, depending on year. Pentosin CHF 7.1 or CHF 11S, depending on year P/S fluid (pre-1998) or ATF+4 1998 and later) or Pentosin CHF 11S Dexron II or III Pentosin CHF 11S Mercon ATF P/S fluid Honda P/S fluid P/S fluid 3 or Dexron II Pentosin CHF 11S or Dexron III WK Hydraulic, ATF+4 or P/S fluid (depending on model) Dexron III
