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#1
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Trans problem: last call for help
Hi,
I am new to this forum. I tried the diesel mailing list but could not get adequate reponses for my transmission problem with a 87 190D 2.5. Hoping for better luck here. Anyway, the symptoms are as such: When I first start up the car, it will go into reverse or drive just fine. Good acceleration, shifts fine as it has always been. But no more than a minute later, it will lose all power. I have to keep the revs very high to keep it at a mere 20mph and the glow plug light will come on too, and if I come to a full stop, the car will not move, as much as I keep the rpm high. My only remedy at that point is to shut off the engine and wait a few minutes, then restart. But that only allows me to get the car moving at a crawling pace back to the parking lot. I have checked the trans fluid and the level seems fine. Fluid and filter changed 6mths ago. I checked the kickdown switch too and it is not sticking, although I am not sure how smooth it has to be. It takes some effort to push down the switch. I checked as many of the vacuum lines as I could. Vacuum at pump is to spec, 700mbar; good vacuum at amplifier; vacuum control valve is somewhat lower at 300 mbar than the required 400mbar. Is there other vacuum lines I should check? I took a look at the EGR valve and it was completely sealed with inches of gunk, not surprising after 350K miles. I cleaned out as much as I could and I could actually hear the turbo spooling now. But that did not fix my transimission problem. Any help or ideas would be greatly greatly appreciated. I don't want to give up on this car just yet. Yen |
#2
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It is not a diesel specific problem but here goes.
What is the condition of the fluid? Just because you filled it up 6 months ago doesn't mean the fluid is not burnt. Just because it was OK 6 months ago doesn't mean the tranny isn't shot. So, one more time, baby. Drop the pan and be careful about it. That way we can see if there are metal flecks at the bottom of the pan. If so, your tranny might be going out.
__________________
01 Ford Excursion Powerstroke 99 E300 Turbodiesel 91 Vette with 383 motor 05 Polaris Sportsman 800 EFI 06 Polaris Sportsman 500 EFI 03 SeaDoo GTX SC Red 03 SeaDoo GTX SC Yellow 04 Tailgator 21 ft Toy Hauler 11 Harley Davidson 883 SuperLow |
#3
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This may be a dumb question, but are you really sure that its a trans problem?
Your description would lead me to look elsewhere.
__________________
1980 500SE/AMG Euro 1981 500SEL Euro 1982 380SEL 1983 300TD 1983 500SEC/AMG Euro 1984 500SEC 1984 300TD Euro 1986 190E 2.3-16 1986 190E 2.3 1987 300D 1997 C36 AMG 2003 C320T 4matic past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350 |
#4
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Quote:
Where would you loook? Just curious and trying to learn
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01 Ford Excursion Powerstroke 99 E300 Turbodiesel 91 Vette with 383 motor 05 Polaris Sportsman 800 EFI 06 Polaris Sportsman 500 EFI 03 SeaDoo GTX SC Red 03 SeaDoo GTX SC Yellow 04 Tailgator 21 ft Toy Hauler 11 Harley Davidson 883 SuperLow |
#5
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I can drain the transmission fluid when I find the time next weekend. The trans was rebuilt 30K miles ago, but that is no guarantee on the transmission's condition.
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#6
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Sounds exactly like a clogged fuel filter to me.
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Proud owner of .... 1971 280SE W108 1979 300SD W116 1983 300D W123 1975 Ironhead Sportster chopper 1987 GMC 3/4 ton 4X4 Diesel 1989 Honda Civic (Heavily modified) --------------------- Section 609 MVAC Certified --------------------- "He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche |
#7
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Sounds like a fuel starvation problem to me. Check your filters, I bet you have an algae attack and the filters are clogged. Same experience I had.
How much fuel is in the fuel tank right now? I bet it isn't full.
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84 300DT Puke Yellow. Totalled after 438,000 84 300DT Orient Red. 169,000 (actual mileage may vary) 2002 Explorer EB (wife's) |
#8
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Quote:
If he can "keep the revs very high" and the vehicle will only go 20 mph, it's not a fuel starvation issue. Now, if he can't get it to rev, that's a different story. So, I conclude that it's not fuel filters. If it drives perfectly fine for the first minute and then won't move, it sounds like the fluid must be very low in the trans. Just enough to engage the clutches until all the fluid is distributed and the pan runs dry?? How have you checked the fluid? With the engine shut off? Or, with it running? This could provide some insight. |
#9
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a fuel restriction does act like this.....even though my problem was the shut off solenoid was artificially partially restricting fuel due ot a restriction in the crankcase ventilation. A set of filters are cheap......low or high trans fluid won't keep the engine from reving...or making enough power to go more than 20 MPH..... low fluid would lead to trans slipping and being way too free to rev...due to slipping clutches.. The canister filter will hold enough fuel to let it go for brief periods at more than idle, the inability to feep up with fuel consumption would leed to the power loss...... $15 will prove thats not the issue. Of course checking the trans fluid of course cost nothing but I bet its fine.
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Proud owner of .... 1971 280SE W108 1979 300SD W116 1983 300D W123 1975 Ironhead Sportster chopper 1987 GMC 3/4 ton 4X4 Diesel 1989 Honda Civic (Heavily modified) --------------------- Section 609 MVAC Certified --------------------- "He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche |
#10
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Quote:
No way. If you have a fuel restriction, you will not have the vehicle display high revs and not go anywhere. Your problem was that you lost power and could not get the revs to allow the vehicle to move above 55 mph, IIRC. This one has revs but won't go over 20. I agree that fuel filters will rule it out, just in case "high revs" are not all that high. |
#11
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#12
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I have extra sets of fuel filters and I would give that a shot. FYI, I did run a can of diesel purge maybe 6mths ago and changed both filters afterwards but I might have had a bad batch of diesel afterwards. My problem with checking the trans fluid accurately now is the car could not be moved enough to warm the fluid up to temp, so how could I be sure? And does anyone have an answer to the glow plug light coming on while driving? The glow plugs are working I know. I have no problems starting the car in winter, even though it might take at least two cycles when it is 5F outside.
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#13
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High revs I was talking about was 3000 rpm; the engine sounded like that was the limit at that point. I did try to downshift manually to no avail. It would not even go into reverse from a stop.
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#14
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With the transmission cold, where is the fluid level on the dipstick? (Idling in neutral.)
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#15
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