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  #1  
Old 03-31-2010, 07:16 PM
98Ram1500 98Ram1500 is offline
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Thumbs down Why is my 98 ram 1500 still cutting out???

I got this truck and was told it had a new crank sensor put in a few months ago and that it needed a new fuel pump. The tuck cuts out on me some days and others it runs fine. I put a lot of parts on this truck and it has not change a thing. here is a list of all the parts and what my truck does...
fuel pump (entire module with pressure reg)
coil
cap and rotor
plugs and wires
cleaned the injectors
oil and filter
air filter
down stream o2 sensor
ABS speed sensor ( speedometer still works whenever it wants to)
speed sensor on the bottom of tranny
AND IT STILL CUTS OUT!!!!!

The truck almost acts like its vapor locking or something. It will do it when I pass someone or give lots of throttle or do it when I am going like 15mph down a hill. There is a clicking or (sparking) soud made when the engine cuts out. I have no more ideas and any help is much appriciated. I have heard it might be a throttle sesor or map sensor or maybe a bad ground or voltage reg. PLEASE HELP!!!!!!!!!!!!!!!!!!!!
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Old 03-31-2010, 07:21 PM
City Slicker City Slicker is offline
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Welcome to the forum! Glad to have you here! Hopefully someone can lead you in the right direction.
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Old 03-31-2010, 08:10 PM
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Have you tryed the fuel filter?
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Old 04-03-2010, 08:02 AM
98Ram1500 98Ram1500 is offline
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Quote:
Originally Posted by Ram98 View Post
Have you tryed the fuel filter?
well the filter is in the pump module in the tank and al of its brand new.
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Old 04-03-2010, 08:13 AM
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Time to stop throwing parts at it and get a proper diagnosis. The money you've already spent would have covered a diag fee.
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Old 04-03-2010, 09:15 PM
98Ram1500 98Ram1500 is offline
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Quote:
Originally Posted by Remerson228 View Post
Time to stop throwing parts at it and get a proper diagnosis. The money you've already spent would have covered a diag fee.
I have taken the truck to the local Dodge dealership three times and they are the ones that told me to do the fuel pump and the o2 sensor and they were wrong. Ipaid them just to look at it and diagnose it three times for $86.00 each time and i'm never going back. I am an ok mechanic and did the work myself but nothing seems to be doing the trick any advice would be great!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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Old 04-04-2010, 08:25 PM
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I haven't turned wrenches since the 70's but kind of sounds like a problem Caddy's used to have. They had double walled exhaust pipes and the inner wall would collapse causing a problem similar to yours. Have you checked the Cat? This was a hard problem to diagnose unless you'ed come across before. I would check the Cat first before buying one though.
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Old 04-04-2010, 09:38 PM
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Mine was doing what sounds like the same thing and I ended up having to replace the PCM after many other parts first. After I replaced it my truck runs great!!
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Old 04-04-2010, 09:46 PM
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i have a 97 ram 1500 i have the same problem i was told to replace the throttle position sensor i think that is what your problem may be too watch you mite notice your rpms droping below 1000 befor it cuts
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Old 04-04-2010, 10:50 PM
98Ram1500 98Ram1500 is offline
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Quote:
Originally Posted by Michelle View Post
Mine was doing what sounds like the same thing and I ended up having to replace the PCM after many other parts first. After I replaced it my truck runs great!!
Is that the computer? (PCM) How much do they run off hand??? Is it worth buying like 2 or 3 of them used from a junker or just stay with a new one?
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