Originally Posted by 190Evoluzione
That's funny, especially as you own a W124 Wagon (a pinnacle of modern automotive engiineering). Most MB Mechanics i know wouldn't touch anything from the last 10 years if they could help it.
Well, the reason I stop at 2006 is that the cars change drastically after that. I do A LOT of field diagnosis, and problems on MBZ's 1996 up 2006 seem to run similar to one another. I agree with you about our wagon. It has 229+, needs shocks and a front cover reseal, (you can barely hear it when she is on), and gets better gas mileage than our current service ML!
Forum brothers and sisters, in my opinion, MB's best stops at 2005 (early 2006)......afterward, its a melting pot....
BUT, I love the challenge of the diag on these cars (96-2006), especially in the field.
Here is a story:
Client called from Vallejo, CA with a 1998 (208) Coupe: Crank but will not start. Had previoulsy replaced K40 relay box at the dealer, and crank sensor at independent shop (no cure), the indy refunded the money back, but client had a bad experience with his service dealer, did not want to go back. Anyway, we got the call, car stranded in the garage, client needed to get to work!
Emergency sounded in the clients voice (message left at 6:30amPST), has missed a few days at work due to this problem, was on the edge with management. Well, I went out, got there and verified crank but no start. No codes in system. Test crank sensor, found within specs. Client looking at the clock, getting antsy, pressure is on (me) and clock is ticking......
All fuses good. Check power to fuel pump found none. CLIENT WATCHING AND PACING THE FLOOR, GETTING READY FOR WORK....I GOTTA DELIVER!!!
Pull out laptop, no signal, got permission to log-on to clients wireless router, hit startekinfo, need to access O.E. wiring diagrams, GOT IT! Verified signal to K40 relay via EIS, CLIENT NOW WATCHING MORE INTENSLY, "WILL I NEED TO CALL A RIDE AND TOW MY CAR?" they ask. "NO", I replied and pulled out the DVOM for a final check at the fuel pump relay. BINGO!! Verifed proper system voltage at the activation signal to the fuel pump relay, and system power to relay fuse. FAULTY FUEL PUMP RELAY.
Did not have one on the truck. CLIENT HAPPY, BUT........
Solution: While at startekinfo, was able to find that the relay for the aux coolant pump was the EXACT MATCH for the fuel pump. Advised client that I could make the switch, but that he would need to have the swapped out relay replaced AS SOON AS POSSIBLE. Swapped out relay. Client was preatty DIY savy, and took good notes on where the aux pump relay was, said that he would get a new one.
Problem solved, job saved.
Total Bill: $157.50
If you wish, you can contact the client directly for a comment......