Question about 1998 Dodge Ram 2500 2WD

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1998 dodge ram error code 1494 check engine light on and poor gas mileage

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Check all tubing and junctions for leaks in the fuel evaporation control system. The ECU has detected an issue with intake manifold pressure and is indicating that fuel vapour recovery system is perhaps to blame. Sometimes this can be connected to a fault in the manifold differential pressure circuit which lies on the vacuum line leading to the EGR valve. Also quickly check that the EGR (exhaust gas recirculation) valve is OK by connecting and reconnecting its vacuum line and listening to engine note changes. No engine note change indicates the EGR is probably jammed shut with exhaust crud and needs a general clean up. Sometime these codes detect the symptom and not the cause so you just have to work your way back and eliminate what it might be.

Posted on May 07, 2010

  • machineryman Dec 26, 2010

    I tryed Sea foam and IT WORKS!!!!

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Go to napa and get a bottle of sea foam, its 10 bucks. remove the vaccume line from the brake booster and start the engine. Insert a small funnle into the vaccume line and begine pouring the seafoam in. have a friend keep the engine running while you pour. The sea foam will free up the egr, clean the intake manifold and ungum sensors. hope this helps.

Posted on May 18, 2010

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I have a 1998 dodge ram 4x4 with a 5.9, engine has been idleing rough, it idles fine for about 30 seconds then runs rough, almost to stalling, also the gas mileage is like 3 miles to the gallon. i had it...


If the speed sensor code is coming up change it. the sensor went out on my truck and it would die when i was slowing down and hit the clutch to downshift

Jan 26, 2013 | 1998 Dodge Ram 1500 4WD

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Starts up and dies 3 times in a row. once started, oil pressure gauge not working?


Can you keep the vehicle running if you keep the accelerator pedal depressed?
Do you have an engine check warning light illuminated?
Is there oil in the engine?

Assuming the oil level is fine and you have no check engine light illuminated, then I would suggest checking the following in this order:

1) Throttle body and idle control valve. Clean these thoroughly and rebuild.

2) O2 sensor in the exhaust. A poor reading can result in poor mixture control. You may also suffer poor gas mileage if this is at fault.

3) Exhaust Gas Recirculation valve possibly faulty.

Oct 30, 2012 | 2006 Dodge Ram

1 Answer

04 dodge ram pickup has code po 456 what is this code? 04 dodge ram 1500 5.7 engine gas mileage has gotten worse.


Small leak in evaporative emissions system. Basically takes fuel vapors and recirculates them back to engine to be burned rather than vented into the atmosphere.One common cause of light on dash is faulty/dirty gas cap seal. Did you add fuel just before light came on? Otherwise a small leak at a hose etc., in system, as well as faulty purge system may also cause it.

Nov 05, 2011 | 2006 Dodge Ram 1500

2 Answers

1998 DODGE RAM 1500 4x4 360 ENGINE CODE SHOWS MANY MISFIRES THOUGHT WAS BAD GAS HAVE DRAINED AND REPLACED, RUNNING EXTREMELY RICH ON RIGHT SIDE, O2 SENSORS SHOW TO BE WORKING WHAT ELSE CAN I CHECK ON THIS


I had a similar problem with my Dodge truck.I replaced the cap, rotor, plugs and wires and the check engine light went out. Within 4 days the light came back on with codes for multiple misfires..To make a long story short, I put electrical tape on the wires to adjacent cylinders and the problem was solved. Answer; The pluig wires they are making for Dodge are really cheap!

Sep 08, 2010 | 1998 Dodge Ram 1500 4WD

1 Answer

Code 1494


Did you mean p1494? If so then its your evaporative emission ventilation switch or a mechanical fault, probable causes:

  1. Evaporative Emission Ventilation Solenoid failed
  2. An open or short circuit.
  3. Vacuum hose clogged.
  4. PCM Failed
Check the following:

  1. Check the following connectors: A-109, B-76, B-63, A-107. Repair if needed. If its ok then check:
  2. Check the harness wire between the Evaporative Emission Ventilation Solenoid connector. If its ok then:
  3. Replace PCM
This information was retrieved from AllData :

Sep 10, 2009 | 1998 Dodge Grand Caravan

1 Answer

Ram 1500 mileage issue


yah the 12/16 was a lie dodge never got that with there gas 4weel drives the average is right close to 10mpg i have owned dode all my life. and have never gotten over 13mpg with them. I sold my 97 2wheel drive 5.9 gas and thats the best i did withit was 13mpg and that was with the 285/75s on it you have to remember that the tires that big actually travel more distance than what your odometer is going to read. But right around 10 is average for the 4wheel drives

May 05, 2009 | 1998 Dodge Ram 1500 4WD

1 Answer

Low gas mileage


for fuel mpg. i used to have a 4.7 dodge ram and i
was geting about 14 mpg. on hyways.
as for the light go to a place like autozone they have
a free service they used the code reader and tell you
wat the problem is and they will advise you on repair
solution

Apr 18, 2009 | 1998 Dodge Ram 1500 4WD

1 Answer

Tuck misses when decelerating, Poor mileage.


to much fuel pressure or bad vacume line

Mar 23, 2009 | 2007 Mazda B4000

1 Answer

Code 1494


1494 I believe is related to the EGR

Dec 24, 2008 | 1998 Dodge Grand Caravan

1 Answer

1998 intrepid check engine light


1484 The catalyst seems to be overheating!
1684 The battery has been disconnected within the last 50 starts.

from what i have researched the 1684 is a common code that these vehicles give out..i even got one when i checked mine and i had never disconnected the battery before..so i wouldn't pay to much attention to that one...now the other code is a different story

Jun 15, 2008 | 1998 Dodge Intrepid

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