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#1
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HELP! Vacuum troubleshooting! Car will not turn off!
Thank you for your time! I have a 1984 300d with 312k miles
I see the sticky showing the vacuum diagrams but for some reason they will not display for me. Can someone explain what is the proper step by step process to trouble shoot the vacuum system. I pulled the line off the brake booster and there is vacuum on that line but is it too little? anything farther I do not know what/where to check. I know I have a right rear door not locking so I suspect this as a leak and it will not blow from the center vents so I know I have a issue there too. It use to shut off with the key now it will not. Thank you for your help!! Hip
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2006 Jetta TDI DSG 320k miles 1997 Ford F150 325k miles 4.2L V6 "Work Truck" 2008 Tundra 225k miles 5.7L 1982 240D.....sold 1984 300D...Totaled OUCH! 1985 300D Turbo 222k miles "Dos" sold to 79Mercy 1986 300SDL 98K miles "The Beater"....sold 1987 190E 2.3 16v Euro spec 115K miles....sold |
#2
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hook the vac line back up comming from the booster wiht the key off and you car will stop
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1985 300D - 599,xxxk - blue interior #265 Monark Nozzle, AL129X, 15" Ronals, Gen II Big Brakes hunting 1985 300D - 491,xxxk - in prog-{A-A IC, 3" exhaust, psi\pyro, 28*BTDC, Hella Euros, IP Limiter removal 1985 300TD - 783,xxxk - parts car,used new engine with ALDA cap inplace 1987 Kenworth T-600 8LL 425 CAT Mech. - 6,000,000+k - DEI exhaust wrap, punched through resonators, 1 recent rebuild, |
#3
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Put a vacuum hose in place of the brown vacuum line going to your shut off valve on the back of the IP between the IP and oil filter housing. With the engine running give a couple of strong sucks on the hose. If the engine shuts down, this confirms your shut off valve is functioning correctly. Next, I would disconnect the yellow vacuum line from the system at the firewall above and to the left of the of the oil filter housing at the firewall. Then block off the hose it plugged into (at the front end) with a golf tee. This will remove your door lock system from the equation. If the car shuts off the withe yellow line removed and plugged, this proves a leak in the door lock system is lowering the vacuum level ehough to stop it from shutting off.
If it still won't shut off with the door locks disconnected, push the far right button on the climate control. This will eliminate a lot of the climate control vacuum pods. If it shuts off fine with the button pushed, it proves a leak in the climate control system is causing the problem. You could also try this before the door lock disconnection. These are all test that don't require a Mity Vac.
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1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13 |
#4
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What should the vacuum be at idle with a gauge? i've done all these test it seems i have about 5" of vacuum mine will shut off at about 10" i have a rebuild vacuum pump..
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2004 Infiniti G35 3.5L 6mt Coupe 73K miles 25.6mpg ytd 2001 Green Audi TT 225 AWD Roadster 71K 6sp 30.9mpg >>STOLEN<< 1982 300D Turbo 231K 120hp? 28.1mpg YTD |
#5
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vacuum at a gauge should be 22" with everything working well, or with everything plugged off...
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#6
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At sea level. Lower at altitude.
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1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13 |
#7
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true, but 5" UM no. something is seriously leaking or your pump is shot at those "pressures"
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#8
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Last time I checked.. there is NO altitude in Florida..
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1985 300D 198K sold 1982 300D 202K 1989 300E 125K 1992 940T "If you dont have time to do it safely, you dont have time to do it" "The democracy will cease to exist when you take away from those who are willing to work and give to those who would not." |
#9
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Had shutoff valve replaced and works fine but still vacuum issues. Left rear door not locking and hear hissing. And the ac won't blow out the center vents.
__________________
2006 Jetta TDI DSG 320k miles 1997 Ford F150 325k miles 4.2L V6 "Work Truck" 2008 Tundra 225k miles 5.7L 1982 240D.....sold 1984 300D...Totaled OUCH! 1985 300D Turbo 222k miles "Dos" sold to 79Mercy 1986 300SDL 98K miles "The Beater"....sold 1987 190E 2.3 16v Euro spec 115K miles....sold |
#10
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Quote:
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2006 Jetta TDI DSG 320k miles 1997 Ford F150 325k miles 4.2L V6 "Work Truck" 2008 Tundra 225k miles 5.7L 1982 240D.....sold 1984 300D...Totaled OUCH! 1985 300D Turbo 222k miles "Dos" sold to 79Mercy 1986 300SDL 98K miles "The Beater"....sold 1987 190E 2.3 16v Euro spec 115K miles....sold |
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