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74 Dodge, turned it off and it kept on running?
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SIDRA
Anonymous Poster
krowoutsider@gmail.com
Apr 19, 2009, 2:37 PM
Post #1 of 7
(2510 views)
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74 Dodge, turned it off and it kept on running?
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1974 Dodge
Dart Swinger
318 V8
Mileage unknown (Refurbished engine.)
Alright, so I drive an older car, and as such (Due to theft paranoia.) I yank the distributor cable when she's parked in public places.
Yesterday I went to re-attach the cable and the car wouldn't start. All I was getting was the clicking of the starter. After a jump she started up fine.
Tinkered with he a bit that night, setting the idle a little higher so she wouldn't die during cold starts/warm ups, and I wouldn't have to sit there with my foot on the gas for 10-15 minuets.
After driving her home this morning I went to shut her down. Needless to say I was surprised when I turned off the ignition and the car kept running?! Needed to get her stopped so I popped the hood and yanked the distributed cable, It shocked the hell out of me, but she shut down.
I figured it wouldn't start back up so I reconnected the cable and tried to turn her over, sure enough I got nothing. No noise, no lights, no stereo, nothing responds to the ignition being turned over at all.
So what do I do? Where do I start in fixing this issue? My best guess is that there is something wrong with the ignition switch itself. But I suppose it could be any number of things in the electrical system.
Thanks for any help
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Loren Champlain Sr
Veteran
/ Moderator
Apr 20, 2009, 3:25 PM
Post #2 of 7
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Re: 74 Dodge, turned it off and it kept on running?
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SIDRA; Wow. I'll bet pulling the coil wire with the engine running was a shocking experience! The symptoms that you are describing don't really 'fit' together. First, I'd check all of the negative and positive battery terminal/cable connections. Disconnect them at the battery and make sure they are clean. They can 'look' okay on the outside, but... Second, when you went to turn off the car and 'it stayed running', was it actually running, or dieseling?
Third, with the engine off and stone cold, check the choke adjustment. It's not a good idea to 'just bump up' the idle speed. This will contribute to dieseling when hot and it's not real good on the drivetrain when shifting into D or R. Let us know the results of these 'checks' and we'll go from there.
Loren
SW Washington
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SIDRA
Anonymous Poster
Apr 20, 2009, 9:51 PM
Post #3 of 7
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Re: 74 Dodge, turned it off and it kept on running?
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Thanks, I'll run that test of just leaving her in off this morning to see if she sputters down in 2-5 minuets. After tinkering with it yesterday I found that I have some sort of power draw (I think it's the stero.) coupled with the dieseling. Thus my battery had died. When I switched her out with a brand new bat I could start her up just fine. But still had the problem of her not shutting down. She's running a little rich too so that don't help. For now I'm disconnecting the bat when I have her off until I fix the electrical problem.
I set the idle back down and looked into the carburetor. It's a two barrel carb, and it's the old one from my 318 str8 six engine. Checking into the butterfly valve/choke it looks like it may not be working at all. (My bud actually chocked my car to death this morning by squeezing his hands around the open carb, ha, you cant tell me that chocking a mucle car to death by hand is not one of he manliest things ever, lol.) The car dose not have a manuel choke, insted it's controlled by the heat of the engin, this could also be contributing to my problem.
I'll keep you posted as I try to remidy this odd issue.
ON A SIDE NOT: Can I get a HOOAH for old cars. Compaired to the new computerized mess, there so easy to learn to work on yourself. I love em.
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Double J
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/ Moderator
Apr 21, 2009, 12:48 AM
Post #4 of 7
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Re: 74 Dodge, turned it off and it kept on running?
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How 'bout a " HELL YEAH!!!!!! "
("") (-,-) ("")
(This post was edited by JIM N on Apr 21, 2009, 12:50 AM)
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Loren Champlain Sr
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/ Moderator
Apr 21, 2009, 4:08 PM
Post #5 of 7
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Re: 74 Dodge, turned it off and it kept on running?
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SIDRA; Dieseling is caused, initially, by heat. Carbon particles in the cylinders will get hot, glow, and ignite the fuel after the ignition has been turned off. That's the nice thing about fuel injection, as it doesn't allow fuel into the cylinders after shutdown, unless one of the injectors leak. There are many contributors to heat, of course.
Cooling system, lean condition, low octane, retarded ignition timing, over-advanced timing, ect....
It sounds as if the most important thing right now is to find and correct the drain on your electrical system. Need to be able to start the darned thing. But, once that is corrected, then we can address your other problems. I'm trying to remember the choke set up. You say it is controlled by 'engine temp', which tells me that it is a choke stove type, usually with an electrical 'helper'. The intake manifold has an exhaust 'cross over' that the 'stove' sits in and depends on hot exhaust gasses to heat it. If this passageway is plugged with carbon, the only way of 'unplugging' it is to remove the intake manifold and manually clean it. Sometimes, a hammer and chisel is required if it is real bad. If it is electrically connected, make sure you are getting 12V when the engine is running. Usually, the heat generated by the electric portion of the choke is enough. If you have voltage to the choke and it's still not opening, you may have a faulty choke thermostat. These are relatively inexpensive, but important.
The choke, when cold, should be closed with a slight 'spring pressure'. As the engine warms, it should open. If this 2bbl carb is off of a 225 slant six, it may not be enough carb for the 318, causing the lean condition, but not 'the' concern at this point.
Once we get to that point, we'll discuss decarbonizing the engine.
Loren
SW Washington
(This post was edited by Loren Champlain Sr on Apr 21, 2009, 4:20 PM)
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SIDRA
Anonymous Poster
Apr 26, 2009, 3:41 AM
Post #6 of 7
(2466 views)
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Re: 74 Dodge, turned it off and it kept on running?
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So I think I figured it out. I took her out the other day and when I got to where I was going I put her in park but I was on a incline and the car started rolling back. At that point I realized my car is not going into park. As it should be in gear when in park and not roll away.
I slapped on the e-break and got her under control. So would having it not be in park be the reason why it wont turn off when it's "in that gear?" And what do I do to fix that? I know it's gotta be in the transmition or linkage, but where do I start?
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Hammer Time
Ultimate Carjunky
/ Moderator
Apr 26, 2009, 3:50 AM
Post #7 of 7
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Re: 74 Dodge, turned it off and it kept on running?
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No, I'm afraid the shift linkage has nothing to do with the engine dieseling.
All of the things mentioned before can contribute to dieseling but I have found that the most common reason is the engine idling too fast. If this is due to a vacuum leak, that makes it even worse. Determine why the idle is too high and you will solve your problem. High temperature exaggerates the problem.
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