Doc's Automotive

I guess you can say the A/C is now working properly when it's dropping 40 degrees at idle with the cooling fan on high and fogging up the windows while sitting in the shop!

Starting System Parts

An immobilizer is an electronic security system installed in most modern cars to prevent unauthorized engine starting. Here's a breakdown of its function and operation:
Function: It acts as a barrier between a thief and hotwiring the car. Even if a thief breaks in and manages to turn the ignition, the engine won't start without the correct key or authorization signal.

How it Works:
- Chip in Key: Your car key has a small embedded chip containing a unique code.
- Reader Coil: When you insert the key or bring it near the ignition (depending on the system), a reader coil around the ignition detects the chip's code.
- Engine Control Unit (ECU): The reader coil transmits the code to the car's computer (ECU).
- Match or No Match: If the code matches the one programmed in the ECU, the engine control unit allows the engine to start. If there's no match, the engine remains immobilized.

An immobilizers significantly deter car theft by making it much more difficult for thieves to steal your vehicle.

P0420 Code Explained: Catalyst System Efficiency Below Threshold Are you puzzled by the P0420 code in your vehicle? This article provides a comprehensive understanding of the error code P0420 and What Every Car Owner Should Know About Catalytic Converter Problems, including its causes, troubleshooting techniques, and preventive measures for maintaining a healthy....

Intake Valves Vs Exhaust Valves

Function:
- Intake Valve: Allows fresh air (or air-fuel mixture in modern engines) to enter the engine cylinder for combustion.
- Exhaust Valve: Opens to release the burnt exhaust gases from the cylinder after combustion.

Material and Temperature:
- Intake Valve: Typically made from a material that can withstand cooler temperatures, as the incoming air/fuel mixture is not as hot as the exhaust gases.
- Exhaust Valve: Made from a stronger, heat-resistant material to handle the high temperatures of exhaust gases.

Operation:
- Intake Valve: Opens when the piston descends to draw in the air/fuel mixture.
- Exhaust Valve: Opens when the piston ascends after combustion to expel exhaust gases.

Overall:
- Intake Valve: Brings the "ingredients" (air or air-fuel mixture) needed for combustion into the engine.
- Exhaust Valve: Lets out the "waste products" (burnt exhaust gases) after combustion.

Honda Recalls over 750,000 Vehicles Due to Airbag Problem

Stellantis recalls nearly 220,000 Jeep Cherokee SUVs, warn owners to park outside The power liftgates on the recalled SUVs can catch fire even when the engines are off, according to the company.

https://www.vehicleservicepros.com/service-repair/the-garage/news/53059947/ford-motor-company-ford-recalls-nearly-232000-rangers-over-incorrectly-installed-air-bag-inflator?o_eid=8595B0164945G6C&rdx.ident[pull]=omeda|8595B0164945G6C&oly_enc_id=8595B0164945G6C

Ford recalls nearly 232,000 Rangers over incorrectly installed air bag inflator Ford is recalling certain 2004-2006 Ranger vehicles that, under a previous recall, received replacement front passenger air bag inflators that may have been installed incorrectly.