1994 1500 318 - Rough Idle, part-throttle hesitation - DodgeTalk : Dodge Car Forums, Dodge Truck Forums and Ram Forums
 
Thread Tools
#1 Old 09-16-2009, 06:30 PM
cartmania
Registered User
 
cartmania's Avatar
 
Join Date: Dec 2003
Location: Fort Benning, GA
Posts: 5
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
1994 1500 318 - Rough Idle, part-throttle hesitation

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!!
cartmania is offline  
Sponsored Links
Advertisement
 
#2 Old 09-18-2009, 06:11 PM
cartmania
Registered User
 
cartmania's Avatar
 
Join Date: Dec 2003
Location: Fort Benning, GA
Posts: 5
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
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??
cartmania is offline  
#3 Old 09-24-2009, 09:39 PM
WickedQuick
wickedquick
 
WickedQuick's Avatar
 
Join Date: Mar 2009
Location: West Des Moines
Posts: 345
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
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
WickedQuick is offline  
#4 Old 09-25-2009, 07:25 PM
kevinb70
Registered User
 
kevinb70's Avatar
 
Join Date: Jan 2008
Posts: 493
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
or vacuum leak

1999 Dodge Ram 1500 4x2 5.2L NV3500 Club Cab
in: sct by hemifever
-Upgrades waiting on their lazy owner to install: russell stainless lines, hawk ceramic pads, rotor, calipers, energy suspension master kit, derale 4000cfm dual fan kit, moog upper/lower ball joints

Military Truck Club #118

Green Truck Club #42
kevinb70 is offline  
#5 Old 09-25-2009, 10:58 PM
ozplanet
Just Call Me Oz
 
ozplanet's Avatar
 
Join Date: Oct 2007
Posts: 2,843
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Sounds exacly like the O2 sensor...

94 SLT 1500 318 Flat Black 2wd

Mods: M1 / Comp Cams / 4.10 / 20" 3rd Gen Rims / 4/6 Drop / Flow Master 40's / All New Skins /

2010 Sport Crew Cab Black 4x4 5.7 3.92 Sport hood 10 Speaker Alpine w/nav

Mods: Diablo 91 Canned Tune / Billet Tech Oil Catch Can / Vararam Intake / Magnaflow Muffler / All Interior|Exterior Bulbs LED White / Recon Smoked 3rd Brake Light / Recon LED Light Bar / Orange Striping / Lockpick / Debaged|Murdered / 2 12" Foxbox / 2 Alpine SWR-12D4 Subs / NVX JAD1200.1 1200w amp / Flat Black VIP Wheels VP2 / Black & Orange Leather / Orange Interior Accents with Gloss Black /

Soon: Race Rotors / EBC Yellow Stuff /

www.MyDodgeRam.ca
ozplanet is offline  
#6 Old 09-25-2009, 11:45 PM
Ram15002ndgen
Don't Fear the Reaper
 
Ram15002ndgen's Avatar
 
Join Date: Aug 2009
Posts: 1,638
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
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.
Ram15002ndgen is offline  
#7 Old 09-27-2009, 11:21 PM
Birdman
Mopar Maniac
 
Birdman's Avatar
 
Join Date: Jun 2002
Location: Indy Area
Posts: 36
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
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!

1994 Ram 1500 SLT
5.2 W/4sp auto 46RH & 3.92 Suregrip
Black on Black no decals
Mopar Perf. PCM w\K&N Air Filter
Fabtech 3-1/2" Lift Spindles
99 Sport frt. bumper & grill
258000 miles and still smoking chevys every chance I get...and Toyotas too.

1996 B-2500
5.2 W/4sp auto 46RE & 3.52 gears
Starcraft Custom
Maroon 7 pass.

142000 miles going strong
Birdman is offline  
#8 Old 10-03-2009, 12:20 PM
mudram
Registered User
 
Join Date: Jun 2005
Location: groton
Posts: 46
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
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.
mudram is offline  
#9 Old 10-22-2009, 06:30 PM
bigaaron
Registered User
 
Join Date: May 2007
Posts: 60
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
i had the same problem in my 98 360 it was the downstream O2 sensor
bigaaron is offline  
Closed Thread


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Rough Idle, hesitation and code P 0300 Laetus_Lupus 3G Dodge RAM - General Talk 11 12-15-2007 04:30 PM
Part throttle runs rough/Idle thingy bad? JohnC76 Dodge Dakota 1st Gen (87 -96) Forum 10 08-24-2007 08:20 AM
hesitation,rough idle(already did tune up) Dalesamuels 2G Dodge Stratus - Performance Talk 2 02-28-2007 03:38 PM
3.9L, '97 with rough idle, hesitation 97dakman 2G Dodge Dakota General Talk 0 07-28-2006 02:07 PM
bucking, hesitation, rough idle DeadDak 2G Dodge Dakota General Talk 0 02-09-2006 11:34 AM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

 
For the best viewing experience please update your browser to Google Chrome