Transmission fluid likes to be at a constant temperature. If it is too hot or too cold for too long, the performance can fluctuate and potentially cause damage to the transmission.
If the fluid is at a constant temperature, it behaves in a consistent manner in terms of its friction and lubrication properties. What can help control the temperature is the transmission cooling circuit.
The path of the fluid in the transmission lines is not as much about the destination as the journey. The size and length of the transmission lines, along with the size of the cooler, controls the temperature of the fluid. Also, the size of the engine and weight of the vehicle can determine the design of the transmission fluid cooling circuit.
Another thing to consider is how a modified transmission with a larger transmission cooling circuit might do more damage than good. On modern vehicles, the cooling circuit is designed to manage the fluid temperatures during startup. If the fluid can’t warm up quickly due to the increased volume, damage to the transmission friction surfaces can occur. The same goes for a bypassed cooling circuit. Why? Because fluid that is too hot can damage friction surfaces.
Andrew Markel discusses his take on conversations he had with economists at AAPEX 2016, including the future of purchasing parts.
A clogged oil separator valve is a common problem on many BMW DOHC inline sixes. The high failure rate is caused by sludge build-up that can result in oil burning, rough idle and engine fault codes. Although the solution is pretty simple, replacing the valve is labor intensive and can take anywhere from six to nine hours.
The new website’s bi-lingual, responsive design features look-up powered by ShowMeTheParts.
Andrew Markel discusses what to do to get rid of A/C smells after customers have tried to do it themselves.
Long before people started using cotton gauze air filters soaked in oil, the oil bath air filter was the dominant filter on the market. The filter removes debris in the air by running it over oil and a mesh element. These filters worked great when most roads were dirt, but they could be messy to clean.
Finding Failing O2 Sensors If an O2 sensor gets “lazy” because of old age or contamination, the computer may not be able to adjust the fuel mixture quickly enough as the engine’s operating conditions change. Related Articles – Join Underhood Service On LinkedIn – Honda Tech Tip: Oil Pressure Switch Fails Intermittently – Fuel Trim
Related Articles – Check Out The August Issue Of Underhood Service Magazine – Hayden Automotive Introduces Low-Profile Fan Clutch – Belt Inspection Checklist Underhood Service’s LinkedIn Page Underhood Service’s LinkedIn Group
The MIL comes on with one of these DTCS: P3400 (VPS Stuck Off Bank 1) or P3497 (VPS Stuck Off Bank 2). This may be the result of the front and/or rear rocker arm oil pressure switch intermittently failing.