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Black Dog
Dodge Dakota
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7/08/2004
09:35:20
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 Subject: Running with key OFF
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Message:
When it gets hot outside and the 91 3.9l 4x4 is hot (not overheated) the engine will run up to 4 seconds after the key is switched to off. Anybody else seen this?
4 speed atx with A/C, and all the usual mods, 140,000 on old school 10-30w penzoil, and not one single fluid leak.
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steveo27
Dodge Dakota
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7/08/2004
17:18:15
| RE: Running with key OFF
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Message:
ya my 87 does the same some times...
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GB2000
GenIII
7/08/2004
17:47:32
| RE: Running with key OFF
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Never on an automobile, but my four-wheeler does it...also seen it with smaller engines like lawnmowers and gators. Never with an automobile though...
Josh
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another mark
Dodge Dakota
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7/08/2004
19:12:08
| RE: Running with key OFF
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Message:
you mean dieseling? where it knocks sputters and finally dies?
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J and J Auto
GenII
7/08/2004
22:42:44
| RE: Running with key OFF
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Message:
you mean dieseling? where it knocks sputters and finally dies?
Exactly what it is,
injector small leak
feed back trigering injectors after shut down
Bad o2 running rich at idle and burning the
excess gas after shut down
What causes that is gas getting in and being hot
it ignites with no ignition known as desiling
Bruce at fivomotorsports.com now has new
replacement injectors for the throttle body injection
Larry
J&J Auto
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Black Dog
Dodge Dakota
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7/08/2004
23:24:51
| RE: Running with key OFF
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Message:
Thanks for the reply. I have been suspecting injectors for other symptoms (decreased mpg, poor performance). There is no sputter just smooth idle-then dead. Like a small time warp like the truck said "oh, you turned the key to off", and then the motor stops. I have seen posts sayin' that it is a very simple swap to improved injectors requiring like only a torx driver and some grease, but what is the cost?
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93Dak
Dodge Dakota
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7/12/2004
16:21:44
| RE: Running with key OFF
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By the way, that is fiveomotorsport.com, not fiveomotorsports.com.
It is easy to replace the injector. Throttle body is easier than multi-port.
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J-Man
Dodge Dakota
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7/12/2004
16:41:29
| RE: Running with key OFF
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Message:
My truck does that as well.
Is it only bad injectors that cause that, or could it be other things as well?
I am replacing my plug wires in an attempt to fix a rough running engine, but O2 was going to be next on my list, if that doesn't solve the problem. Wouldn't a cylinder not firing properly also richen the mixture of exhaust gasses and cause the engine to lean out on the other cylinders?
1996 Ram 1500 - 94k miles
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