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#1
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1984 300CD no throtle until the last bit of pedal
I recently purchsed a 1984 300CD. The throttle linkeage is good. When you accelerate the first 3/4 of the stroke does not change the idle. Once you hit the 3/4 mark it will begin to accelerate and go up to redline. The car also has very low power. Here is the list of things I have already done to try to solve the problem:
replaced the IP bypassed fuel source, running of a marine tank direct to IP with a 12V pump replaced injectors checked cam timming checked valve adjustment checked turbo and made sure the inlet was clear of obstruction the enrichment is getting vacuum and has no carbon build up exhuast if clear what is next?
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Andrew Villasenor 805-720-5057 1984 300D turbo 5-speed manual(daily driver) ALL MY DIESELS RUNNING WVO Everything is for sale for the right amount Ebay Store |
#2
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This part is my guess, w0133-1617422 ,throttle linkage ball.It resides at the firewall and if has any wiggle when you move the rod its bad.I test drove a used car once a got a good deal due to this small over looked little part.Go to fastlane parts here and youll find its pretty reasonable.
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#3
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try reving it from under the hood, pull the lever that says stop towards you(if your standing at the left front fender. If it does then it points to a thottle linkage problem.
Have someone push the pedal down and watch the linkage under the hood to find out where the problem is.
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1985 300TD Turbo Euro-wagon 1979 280CE 225,200 miles 1985 300D Turbo 264,000 miles 1976 240D 190,000 miles 1979 300TD 220,000 GONE but not forgotten 1976 300D 195,300 miles 1983 300D Turbo 175,000 miles http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg |
#4
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From your description I'm 95% sure it is the throttle linkage as the two above posts state. They tend to get loose over time, just requires some adjustment and tightening.
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TC Current stable: - 2004 Mazda RALLYWANKEL - 2007 Saturn sky redline - 2004 Explorer...under surgery. Past: 135i, GTI, 300E, 300SD, 300SD, Stealth |
#5
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X3 on linkage. I hope you didn't spend too much money on those very expensive things before checking something simple.
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#6
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sounds to me like he just started throwing parts at the problem rather than diagnosing the true problem.
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1985 300TD Turbo Euro-wagon 1979 280CE 225,200 miles 1985 300D Turbo 264,000 miles 1976 240D 190,000 miles 1979 300TD 220,000 GONE but not forgotten 1976 300D 195,300 miles 1983 300D Turbo 175,000 miles http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg |
#7
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Thank you for you help, but the linkeage is not the problem. I can move it from under the hood, and I can watch the linkeage activate the IP and still nothing. If I move the Idle adjustment screw all the way in, I get no change in Idle.
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Andrew Villasenor 805-720-5057 1984 300D turbo 5-speed manual(daily driver) ALL MY DIESELS RUNNING WVO Everything is for sale for the right amount Ebay Store |
#8
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Was the IP put in correctly?
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1985 300TD Turbo Euro-wagon 1979 280CE 225,200 miles 1985 300D Turbo 264,000 miles 1976 240D 190,000 miles 1979 300TD 220,000 GONE but not forgotten 1976 300D 195,300 miles 1983 300D Turbo 175,000 miles http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg |
#9
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IP timing? Any smoke coming out of the exhaust?
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TC Current stable: - 2004 Mazda RALLYWANKEL - 2007 Saturn sky redline - 2004 Explorer...under surgery. Past: 135i, GTI, 300E, 300SD, 300SD, Stealth |
#10
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Quote:
Also backing off on the idle screw that would normally lower the idle speed should be done without the linkage connected tot he throttle lever. Afer that the (corrected to- length of the linkage) should be adjusted and poped back on. The reason for this is that instead of the Throttle are resting on the Idle Stop it will hang on the linkage. I think it is also possible that if the Vacuum Shutoff is getting some vacuum it might put the IP in a partial shutoff position. Try disconnecting the Vacuum line at the Shutoff; no vaccum no shutoff so it should not effect the IP at all.
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84 300D, 82 Volvo 244Gl Diesel Last edited by Diesel911; 06-05-2009 at 12:52 AM. |
#11
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Still dealing $10,000 diesels and selling WVO kits?
....just in case the rest of the forum didn't know... |
#12
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Yes , that little hardened rubber ball sleeved at that joint is very unforegiving ,any play at that connection and your peddle is flat floored for peddle to fuel response .It deteriates over time ,if the plate that holds the piece in place looks old then the joint is old ,its only sold as one piece.Before you do anything else ,remove those two little screws and check it out.
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#13
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Beat me to it!
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http://farm8.staticflickr.com/7271/7...144c3fc1dc.jpg |
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