troubleshooting

Hi, my first post here. I am looking for a trouble-shooting guide for starting problems with my 175CDT equipped 1985 W123. Current problem: Engine started on first attempt from cold (after standing more than three weeks). Was running a bit lumpy, hesitant on moderate throttle input, but...

Hi everyone So, last weekend I noticed a bit of squeak slowing down. Then at 70mph a vibration, and fuel economy has dipped. I'm a novice, but it's obviously alignment or wheel ba lance My dilemma is which do I pay to get done first? I wa thinking wheel balance, but then if that's not the...

My W168 is missing on cylinder #2. I'm looking for information on how to troubleshoot the ignition module/coil before I purchase a new one. I recently replaced the starter using the top replacement technique. After reassembly, cylinder #4 was missing as per ECU code P0304 (I believe). I...

GF has an A Class 2002 2100cc (the Evo motorsport) when cold the car is very hesitant, it requires a lot more gas or it will stall. It seems to improve as the car gets warmer, but not to the point of it being normal. any ideas? thanks

I have a 1990 560SEC, with - original - R12 aircon system. It has the rotary dial controls, not the pushbutton ones. Until recently the aircon worked fine, but the car has been garaged over the winter. I've just started running it again, and the aircon doesn't work. The compressor clutch...