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1988 dodge 250 5.2 liter 168,000
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1988dodge
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Jul 14, 2009, 7:20 AM
Post #1 of 9
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1988 dodge 250 5.2 liter 168,000
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When i am driving and hit the gas my truck does not respond sometimes and if you hold it down for a while sometimes it will go but it usually doesnt and then eventually stalls and after sitting at a stop light sometimes it will just stall when sitting there or when i first hit the gas i recently change the spark plugs so i know its not that and it only does it sometimes so im thinking it is electrical but i dont really know please help.
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Sidom
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/ Moderator
Jul 14, 2009, 8:52 AM
Post #2 of 9
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Re: 1988 dodge 250 5.2 liter 168,000
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1st step would be to see what you are losing.... Spark? or Fuel? and then go from there.....
If there are any overdue maintance items, take care of those 1st. If it solves the problem.... Great! if not, it need to be done anyway.
Maybe take a vacuum reading & make sure you're around 18', when it's idling you can partially cover the carb & if the engine speeds up, you're probably gonna be looking for a vacuum leak...........
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Loren Champlain Sr
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Jul 14, 2009, 11:49 AM
Post #3 of 9
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Re: 1988 dodge 250 5.2 liter 168,000
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Is this carbureted or TBI injection?
Loren
SW Washington
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1988dodge
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Jul 15, 2009, 6:55 AM
Post #4 of 9
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Re: 1988 dodge 250 5.2 liter 168,000
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tbi injection
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1988dodge
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Jul 15, 2009, 6:57 AM
Post #5 of 9
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Re: 1988 dodge 250 5.2 liter 168,000
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o and i did find a vaccum line that isnt connected to anything but idk where it goes i searched for a spot but didnt see any
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Loren Champlain Sr
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Jul 15, 2009, 11:04 AM
Post #6 of 9
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Re: 1988 dodge 250 5.2 liter 168,000
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Where is the vacuum line attached? We have an '89 Dodge 5.2L pickup in the shop right now with virtually the same symptoms. Turns out that one of the injectors 'comes and goes'. Might want to remove the air cleaner and watch the injectors at idle to see if both are working. Just a thought.
Loren
SW Washington
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1988dodge
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Jul 17, 2009, 11:53 AM
Post #7 of 9
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Re: 1988 dodge 250 5.2 liter 168,000
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ok thanks and i think it is attached to the bottom of the carb. or whatever you want to call it
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Loren Champlain Sr
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Jul 17, 2009, 12:15 PM
Post #8 of 9
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Re: 1988 dodge 250 5.2 liter 168,000
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That vacuum line may be the one going to the air cleaner? (TAC) Should be a vacuum routing diagram under the hood or on the core support. Check the base of the TBI (in front) and see if there are any ports open. If so, try to figure out where they should be connected to while looking at the routing diagram. If you can't figure it out, plug it off so it isn't 'sucking' vacuum during testing. If you have a way of downloading a picture of the base of the TBI, that would help.
Loren
SW Washington
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1988dodge
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Jul 17, 2009, 12:19 PM
Post #9 of 9
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Re: 1988 dodge 250 5.2 liter 168,000
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no there is one going to the air filter so i will check it out sometime
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