I only ask because a few days ago I started this thread regarding a car I was working on:
http://www.peachparts.com/shopforum/tech-help/350160-1991-300sel-fuel-pump-mas-diagnosis.html

(One caveat, I have to come clean... in that thread I mentioned I was working on the car for a friend. I was actually looking to buy it, but I didn't want to give away the farm to any of you guys who might have also seen the ad... )

So anyhow, this '91 300SEL was advertised as needing a fuel pump and possibly an MAS or other components. When I arrived the car was a dirty mess, the trunk lid was smashed in, and the driver's door was sprung and didn't close flush without a "Fred Flintstone" slam. The leading edge of the door and the rear of the driver's side front fender were munched pretty badly. On the plus side, the interior was perfect, with light blue leather seats, no cracks in the dash, and wood in great condition. It had some very nice Michelins all the way around and service records all the way back to 1990, with no major work done but lots of regular oil changes and tune ups.

The owner was not there when I arrived, but he told me that there was a spare fuel pump in the trunk, and that I was welcome to try to install it and get the car running. I started in on that, and 1/2 hour later I was ready to hopefully hear her fire up. No such luck, dead battery. Daisy chaining two sets of jumper cables together to the tired old Volvo in the driveway brought enough juice to discover that everything electronic inside the car seemed to work, but not enough to crank the starter or get any action from the fuel pump. Jumping pins 1 & 2 on the MAS got the fuel pump whirring, so at this point I'm thinking for $600 and an MAS I may now be interested in the car. I made him the offer, and he accepted. I took the "new" fuel pump off (he wanted an extra $120 for it), and I as I expected fuel came out everywhere (the gauge was showing a little less than 1/2 tank).

I had it towed to my workplace nearby and started in on it. I installed the original pump, charged the battery, and started cranking. Nothing... Pulled the MAS, jumped pins 1 & 2 again, nothing... Tried another OVP I had scored at a junkyard, nothing... Fuel gauge still showing almost 1/2 tank, pump whirring away, we've got spark, uh-oh, what have a I gotten myself into? I'm not a whiz when it comes to electronic fuel injection. Visions of throwing a bunch of hard earned cash at a car that needed a fair bit of bodywork were making me a little nervous... Then I remembered that when I took out the other pump, gas came spurting out. If the pump is doing it's thing now, cracking one of the lines will tell me if this one is also working. Bone dry...

I just happened to have a gas can with me with about 3/4 gallon in it. I poured it in and started cranking... Nothing... Try again... VROOOM! Hi fives with my buddy who is helping me out!!!

So... with all of the original parts in it, the car runs great! I am convinced that the seller didn't realize that it was OUT OF GAS!!! The gauge has seemed to returned to normal operation (I filled her up and I will know after letting it get down to less than 1/2 tank again), and now I know what that little yellow triangle light means...

Oh, and one more thing... he had a two car garage, and there was a twin axle car trailer in the other space. As I handed him the cash, he confessed that he had done all of the damage to the door trying to get the car on the trailer. Doesn't surprise me considering he didn't even know the car was just out of gas!

I could write a book based on what I've seen, let alone heard. Most recently, last week some guy at a local gas station put a couple gallons of Adblue into the crankcase of a 212 E-Class diesel.

Nothing stupid yet this week but it's only Wednesday.

Home Depot Idle Control Valve......

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1993 190E 2.3
2001 SLK230
1971 LS5 (454) Corvette Convertible

Gorilla tape to make an charge pipe from my VNT to my manifold. Held around 8psi for the 200 mile ride home

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$60 OM617 Blank Exhaust Flanges
$110 OM606 Blank Exhaust Flanges
No merc at the moment

Gorilla tape to make a charge pipe from my VNT to my manifold. Held around 8psi for the 200 mile ride home

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$60 OM617 Blank Exhaust Flanges
$110 OM606 Blank Exhaust Flanges
No merc at the moment

That's actually kinda brilliant in a McGyver kinda way...

I bought a W114 that I hadn't driven.

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Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar.

83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 400,xxx miles
08 Suzuki GSX-R600 M4 Slip-on 22,xxx miles
88 Jaguar XJS V12 94,xxx miles. Work in progress.

my e300d had a wire on the W terminal of the alternator connected to a AC voltage lamp and then a flip switch - I have no idea why would anyone want to do that, the W terminal in Bosch alternators is a tap into the internal windings before the diode bridge.

Same weird car had wire nut repairs on 3 wires in the engine room.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)

Popped the hood quickly of a 300D that had been sitting for years while doing a PPI. I got around ten wasp/hornet stings.

In a hurry, I once jacked my w201 by the front sway bar. Figured it out because I was furiously jacking but the car wasn't going up.

I cut an old sway bar bushing in half and used the "half C" shape to put in between the center support bearing. I also cut a sway bar bushing in 3s and used it to wedge underneath and on the sides of a collapsed transmission mount. The results were amazing as the pieces were perfect fits!

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1990 190E 3.0L

.

Hey, at least he sprung the big dollars for a brass valve. Perhaps we could license the rights to URO for the design - but using a plastic sprinkler valve instead.

.

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Current rolling stock:
2001 E55 183,000+ Newest member of the fleet.
2002 E320 83,000 - The "cream-puff"!
1992 500E 217,000+
1995 E300D 412,000+
1998 E300D 155,000+
2001 E320 227,000+
2001 E320 Wagon, 177,000+

Prior MBZ’s:
1952 220 Cab A
1966 300SE
1971 280SE
1973 350SLC (euro)
1980 450SLC
1980 450SLC (#2)
1978 450SLC 5.0
1984 300D ~243,000 & fondly remembered
1993 500E - sorely missed.
1975 VW Scirocco w/ slightly de-tuned Super-Vee engine - Sold after 30+ years.

+1. Someone give UroDan a heads up on this new product idea......


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I ran my w126 diesel off baby oil

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1999 w140, quit voting to old, and to old to fight, a god damned veteran

Did it work?

It is pretty viscous.

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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!