1994 1500 318 - Rough Idle, part-throttle hesitation - DodgeTalk : Dodge Car Forums, Dodge Truck Forums and Ram Forums
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cartmania
 
  1994 1500 318 - Rough Idle, part-throttle hesitation - Posted: 09-16-2009, 06:30 PM
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Post #1

Ok guys and gals, got some things stumping me with my new (to me) Ram... 318 with 188k is having some issues with idle, rpm's drop slowly while sitting at stop light, etc, throw it in neutral, and engine revs to 1500, then drop to normal and starts to fall again... drop in drive, revs up, then drops... so on and so on... if i let it go, it will die, but start right back up...

Problem #2 - at part throttle, while accelerating, engine will miss and "knock" but works fine at wot...

That said, these problems are not always there... some days, runs fine all day...

Thanks!!
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cartmania
 
 Posted: 09-18-2009, 06:11 PM
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Post #2

Ok, I'm new to posting on the forum, maybe i'm in the wrong department here? with all of the other solutions i have found over the years, i'm sure someone, somewhere has had a similar issue??
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WickedQuick
 
 Posted: 09-24-2009, 09:39 PM
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Post #3

Check your IAC (idle air control) valve. Try this link bro.

http://www.jeepforum.com/forum/f13/z...21/index4.html



Lemme know if it doesnt work
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kevinb70
 
 Posted: 09-25-2009, 07:25 PM
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Post #4

or vacuum leak
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ozplanet
 
 Posted: 09-25-2009, 10:58 PM
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Post #5

Sounds exacly like the O2 sensor...
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94 SLT 1500 318 Flat Black 2wd

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Ram15002ndgen
 
 Posted: 09-25-2009, 11:45 PM
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Post #6

Could also be a Throttle Positioning sensor. Could be plugged injectors, fouled plugs, spark plug wiring or rotor and cap going bad. It's one of those problems that can be caused by many things. The fact that it doesn't do it all the time simply means that the PCM is making adjustments to keep the engine running. Or you could have a gremlin just messing with ya.
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Birdman
 
 Posted: 09-27-2009, 11:21 PM
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Post #7

My thoughts-
Mass air flow sensor or dirty air filter.
Or the EGR valve is stuck.
I have the same year truck and engine.
Good Luck!
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1994 Ram 1500 SLT
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mudram
 
 Posted: 10-03-2009, 12:20 PM
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Post #8

cartmania,I had the same problems your having,I changed the plugs then cleaned the iac.that didn't cure it,went under and unplugged the down stream o2 sensor in the cat.she runs great now but the cel is still on,will replace the o2 when I get a few bucks.just a thought you may try.hope it helps.
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bigaaron
 
 Posted: 10-22-2009, 06:30 PM
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Post #9

i had the same problem in my 98 360 it was the downstream O2 sensor
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