300SE Double relay change

The saga of my non functional A/C is now over. The 300SE is blowing cold air. It would want to after all the parts I had to change to get this far. The final piece of the puzzle was the Klima relay. This relay controls the engagement of the compressor and had burned out when […]

W126 A/C almost blowing cold

My fight with the W126 Air Conditioning system is almost over. When I purchased the car, the A/C worked rather well. After the water pump gave out, it looks like it shorted out the compressor clutch. Changing out the clutch is not much different to changing out the whole compressor, so I sourced a new […]

Finally, a working blower motor

My story of fixing the W126 climate control can be summed up by: If everything points to a problem with an expensive part, don’t waste your time trying to replace the cheaper parts around it in a futile hope it will solve the problem!

After trying a used Climate Control Unit, new fan resistor etc, […]

W126 Climate control woes

I’ve been fighting with the W126 Climate Control system for the last few months – and it’s been winning. When I purchased the car in November last year, it was a very hot day and the A/C worked great. It had a new radiator, so I took the evidence of leaking coolant to be history […]

300SE poor hot starts

The 300SE has been suffering from poor hot starts. It required a lot of cranking before it fired. On a K-Jet car, this is normally caused by a faulty fuel accumulator. From what I understand it’s the job of the accumulator to hold fuel pressure after the car is switched off. I also planned to […]

My Mercedes Collection

My Mercedes collection after giving them a quick wash. A representative from the 60s, 70s and 80s.

300SE head gasket – worth fixing?

Recently on the 300SE I had to make a decision if I would fix the head gasket or junk the car. To do the repair right was going to cost pretty much what I paid for the car. I had also spent pretty decent money doing the water pump only a few months before. To […]

Further 300SE A/C Troubleshooting

Previously, I had identified that the cause of my A/C problems was the fuse blowing. I have been narrowing down the problem more and more to the compressor clutch. Therefore, I wanted to eliminate everything else as the compressor is every expensive and beyond my skillset. I had already unplugged two other components that are […]

300SE stumble at idle

The 300SE had a severe stumble at idle. It only occurred when the engine was hot. It never stalled the engine, but felt like it was about to. There was also a miss at takeoff. My initial thought was to check the distributor cap and rotor. However, on further examination, you could see sparking around […]

W126 Ignition tumbler replacement

When new, a W126 Mercedes would have come with four keys:

Two square headed master keys. One round headed valet keys. A flat ‘wallet’ key.

The master keys were designed for everyday use and opened all locks on the car: doors, ignition, glove box and boot. The valet key is similar, but does not open […]