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1979 300D chattering starter when hot
We’re having problems on our ‘79 300D with the starter cutting out intermittently, usually when the engine is warm. When the engine is cold, there is usually no problem firing the engine.
When warm, you can feel the starter kick in and out while the engine cranks, and it’s murder on the bendix drive, not to mention the ring gear. What we’ve done: 1: New Battery 2: New starter, noticed the Bendix drive gear was really loose on the old starter shaft, probably as a result of the chatter problem. 3: checked & cleaned ground straps from battery to body, and body to transmission. When the car is hot, the best way to get the starter to crank is to jiggle the keyswitch while turning the key, but that also doesn’t guarantee a hot start. Sometimes moving the turn signal stalk during cranking helps to complete the circuit. I have a new keyswitch ready to install, but I have a sneaking suspicion that there’s more to this, since I also hear a clicking noise behind the dash while the starter circuit is energized. What makes this more difficult is that there is no way to jump start the car like there is with on my '84, which has a terminal block on the passenger side fenderwell, the '79 does not have that feature. Has anyone had this problem? Is there another relay I should check that lives behind the instrument cluster? Is there another ground strap under the dash that needs checking? The Haynes manual mentions for the 123.130 body an A/C / Starter relay, but I don’t know what its function is—(item 38 on the wiring diagram) Thanks in advance for any help, I just want this car to be running right this weekend. Thanks to All,
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Nate Stanley (Currently Benzless) 1985 F-250 6.9l 170K 2009 SCION XB 36.5K 2003 LS430 78K 2012 Kubota B 2320 |
#2
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How much cranking do you have to do to get it started when warm? My 300TD motor starts almost instanteously (after a short glow) when warm I don't think the starter would have time to kick in and out. Are you sure your problem isn't a warm engine problem rather than a warm starter problem?
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Bill Reimels Now down to one: 1972 300SE 3.5 W109 (Euro delivery) |
#3
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Billrei,
the engine will fire right away when warm, IF the electrical circuit to the starter will stay energized. This is an electrical issue only, the car runs like a swiss watch once it gets going, NO fuel delivery problems at all.
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Nate Stanley (Currently Benzless) 1985 F-250 6.9l 170K 2009 SCION XB 36.5K 2003 LS430 78K 2012 Kubota B 2320 |
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