Stalling Quiz: WINNER GETS $50 - Page 2 - Mercedes-Benz Forum

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post #11 of 79 (permalink) Old 06-06-2009, 08:00 PM
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Originally Posted by drewprof View Post
What is your best guess? Winner gets $50
Car: 1988 190E 2.3 8V
Problem: stalls at a stop or while slowing down to a stop (All random)
Parts replaced:
1. Fuel pump
2. Fuel filter
3. Fuel Pressure Regulator
4. Fuel accumulator
5. ICV
6. ICV hoses
7. Air meter rubber boot
8. Crank position sensor
9. Fuel pump relay
10. OVP
11. Temperature sensor
12. O2 sensor
13. Catalytic converter
14. Exhaust
15. Resonator
16. Spark plugs
17. Ignition wires
18. Ignition rotor
19. Ignition cap
20. Battery
21. Voltage regulator
22. Breather hose
23. Breather hose coupling
24. Fuel cap
25 EHA washers

What was done:
Adjusted EHA and Lambda
Checked fuel pressure
Checked fuel flow for each injector
Checked main fuel flow and quantity
Air plate adjusted

If your suggestion fixes the problem then you will get $50. So far this problem has lasted one year and not a single suggestion from any of the forums has provided a solution that eliminated this stalling.

Rules: You must state step by step the procedure that you would undertake. It must be replicated by an idiot like me and will not require that I end up in the hospital. In addition, replacing the whole engine or complete systems are not acceptable solutions. You must pinpoint a specific problem, support it then list and describe exactly how you would go about it.
Before I implement your solution it must be vetted. Once I agree to go with your solution there will be a testing period of two weeks before I declare you a winner.

Note: This competition is listed in several forums
I reserve the right to terminate this competition at will
Not much left . . .

Does it only stall in gear? Ever pop it into neutral when you are nearing a stop?

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post #12 of 79 (permalink) Old 06-06-2009, 08:01 PM Thread Starter
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Not much left . . .

Does it only stall in gear? Ever pop it into neutral when you are nearing a stop?
Sometimes it will stall by just sitting there in park while I watch it idle.
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post #13 of 79 (permalink) Old 06-06-2009, 08:06 PM
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Intake Manifold gasket.
Sucking air.

Mine did similar bad running. It's a little hard to do, but spray some carb cleaner around the gasket area and listen for a change. Then the spaghetti work of hoses under and around the manifold also are probably cracked from age. Replace em. It's about 15 ft of spaghetti. Carb cleaner is a cheap check.

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post #14 of 79 (permalink) Old 06-06-2009, 08:13 PM Thread Starter
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Intake Manifold gasket.
Sucking air.

Mine did similar bad running. It's a little hard to do, but spray some carb cleaner around the gasket area and listen for a change. Then the spaghetti work of hoses under and around the manifold also are probably cracked from age. Replace em. It's about 15 ft of spaghetti. Carb cleaner is a cheap check.

Aardvark
Checked that, no leaks and the gasket is new because I removed the intake manifold for cleaning. All vac lines replaced.
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post #15 of 79 (permalink) Old 06-06-2009, 08:20 PM
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Does it run smooth at speed, or is it lacking power?

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post #16 of 79 (permalink) Old 06-06-2009, 08:25 PM Thread Starter
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Does it run smooth at speed, or is it lacking power?

Aardvark
It's a speed demon, nice pick up, actually very impressive for a 4 cylinders. Very smooth, no jerking from power surges or transmission. When I fist got it it would flare a bit then I discovered it just needed trans fluid then it's been fine ever since.
The car is clean and runs great when it runs; it will be a shame that I send it to the junkyard to clear up my inventory or old cars. The junkyard offered me $300 which I can put towards a down payment on a brand new Geo Metro. I hear they are much more reliable than Mercedes.
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post #17 of 79 (permalink) Old 06-06-2009, 08:36 PM
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Originally Posted by drewprof View Post
It's a speed demon, nice pick up, actually very impressive for a 4 cylinders. Very smooth, no jerking from power surges or transmission. When I fist got it it would flare a bit then I discovered it just needed trans fluid then it's been fine ever since.
The car is clean and runs great when it runs; it will be a shame that I send it to the junkyard to clear up my inventory or old cars. The junkyard offered me $300 which I can put towards a down payment on a brand new Geo Metro. I hear they are much more reliable than Mercedes.
Brand new Geo Metro? They quit making that car years ago.
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post #18 of 79 (permalink) Old 06-06-2009, 08:41 PM
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A couple of obvious things to check, and one that most people don't ever try.

Check plug burn (lean/rich)
Check timing and advance
Check for play in distributor shaft.
Check ignition wires again. Some of those you hand make are trouble.

Now the one people don't try.
In the black of night, go out with a plant spray bottle of water and mist down all ignition wires and connections and look for arching. I've seen light shows like you wouldn't believe, by doing that.

Man, Dude! It's hard to diagnose over the "net". There is little visual to draw from, and things like mileage and other factors start coming into it. A romp down the tarmac is also revealing, but I don't have that opportunity.

Good cars but stupid crap comes up on em.
I've got 150K miles of abuse and it comes back for more, but not without complaining about me being mean to her.

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post #19 of 79 (permalink) Old 06-06-2009, 09:13 PM
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Brand new Geo Metro? They quit making that car years ago.
yeah now its an aveo..... but from experience never have 3 ppl in the back that weigh over 100 lbs each..... because at highway speeds the car wanders all over the road!!!! and yes there were no loose components!!!!!
just felt like preparing you for your next whip homey!!!!
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post #20 of 79 (permalink) Old 06-06-2009, 09:23 PM
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Volkswagen had a big problem with defective ignition coils on their late model Jettas several years ago. They used a water spray test to see if the coils would arc. Apparently the coil insulation was defective. Did you check your coil? You can check the primary and secondary resistance with an ohmmeter, and if you have a megger, also the insulation resistance. But the water spray test is a quick sanity check.

Last edited by p100; 06-06-2009 at 10:16 PM.
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