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Posted on Jun 19, 2014

Why did 99 dodge ram 1500 5.2 (4) 4x4 gas mileage went from 13 to 7-8. I know it's a vacuum leak but where?

5 Related Answers

motor1258

Mike Butler

  • 6674 Answers
  • Posted on Feb 13, 2009

SOURCE: my 2004 dodge hemi ram has a power steering leak. My buddy has a

Lucas power steering stop leak to the rescue ?

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Anonymous

  • 139 Answers
  • Posted on Apr 19, 2009

SOURCE: 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

c17hydro

Greg Bernett

  • 2993 Answers
  • Posted on Jul 21, 2009

SOURCE: towing capacity of 99 dodge ram v6 1/2 ton p/u

It is 7,950 lbs.

Anonymous

  • 466 Answers
  • Posted on Mar 21, 2010

SOURCE: i need a diagaram of a 1995 dodge ram 4x4 vacuum

Ok you shipping this figure i hope will help you Thanks469f0a7.jpg

Joseph Prosser

  • 780 Answers
  • Posted on May 07, 2010

SOURCE: 1998 dodge ram error code 1494 check engine light

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.

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Related Questions:

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1answer

2004 Dodge Ram. Changed condenser after collision pulled a vacuum on the AC system. How much oil if any do I add to system please?

Question edited for clarity to what I think you meant to say :>)
Question moved to sub category.

Normally, unless you know that oil leaked out, the vacuum doesn't pull oil, just gas. The is good advice here.

https://www.ericthecarguy.com/forums/topic/ac-condenser-replacement-procedure/

More here specific to Ram

https://www.google.com/search?q=dodge+Ram+Changed++AC+condenser%2C+How+much+oil+to+add

..
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Everything about your vehicle is in here these manuals.. I buy it too
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Have a dodge ram 50 pickup.. Hard to start.. Once started it will idle... Try to pull out and it hesitates and wants to die.. Back off on the gas and sometimes it will idle or dies..

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CarGurusCarburetor - I recently bought a 1989 2.6L Ram50 for my son. ... Asked by redoverfarm Apr 13, 2010 at 03:36 PM about the 1989 Dodge Ram 50 Pickup ... check your fuel injector...may be clogged dirty, get a fuel injector cleaner or carburator ... Also gets poor gas mileage and is hard to start when the engine is warm !

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I have a 99 Dodge Ram 1500 v8 5.9 it's running really bad and when you press on the gas it bogs down and dies out it also rattles and bangs and barely runs

Check for vacuum leaks with a can of carb spray. Replace fuel filter. Check fuel pressure. When was the last tune-up? Plugs and wires.
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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.
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1997 Dodge Ram 1500 4WD 5.9, Changed tire size from 265 to 315.

The better the engine breaths the better the mileage. Was the new computer a stock computer or performance?
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Ram 1500 mileage issue

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Air only blows on defrost (windshield)

Check vacuum lines on firewall for leak, check all vacuum lines if one on fire wall is ok , doors work off vacuum
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Stalling issue

check for vacuum hose leak, listen for hissing sound a can a carb spray may assist you in finding this by spraying the hoses and watch for change in idle, this may not show a code if it not a constant problem. under load its ok when it tries to idle the vacuum leak will stall the motor..
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