Backfire through intake

Tiny
TXOUTLAW68
  • MEMBER
  • 2002 DODGE RAM
  • V8
  • 2WD
  • AUTOMATIC
  • 113,461 MILES
Have a 2002 dodge ram 1500 4.7 magnum engineengine rolls over wont fire then blew apart the air intake box into 11 pieces
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have the same problem?
Yes
No
Tuesday, February 15th, 2011 AT 6:14 AM

33 Replies

Tiny
HEMIMARK
  • MEMBER
  • 1 POST
My Dodge Ram just did this exact thing yesterday. What did you find was the problem? Thanks
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Wednesday, July 6th, 2011 AT 11:01 PM
Tiny
NATES68
  • MEMBER
  • 1 POST
Mine did the exact same thing. Had a problem with one of the timing chains. Had new chains and tensioners put in and it runs like a top now
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Monday, November 12th, 2018 AT 4:02 PM
Tiny
REDNECKGP
  • MEMBER
  • 5 POSTS
  • 2002 DODGE RAM
  • 5.9L
  • V8
  • 4WD
  • AUTOMATIC
  • 214,000 MILES
Back fires at highway speed and gauges fluxuates
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Monday, November 12th, 2018 AT 4:04 PM (Merged)
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
Which gauges fluctuate?What do they do?Also have you checked the computer for codes?Also have you checked the charging system?
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Monday, November 12th, 2018 AT 4:04 PM (Merged)
Tiny
REDNECKGP
  • MEMBER
  • 5 POSTS
Sorry I don't know which gauges it is a truck I can get a very good deal on a purchase. The seller said he had it checked and was told it was the computer I was curious about 2002 ram quad cab 4x4 for $1500. Just can't put a lot of money in it.
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Monday, November 12th, 2018 AT 4:04 PM (Merged)
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
That's hard to say how many mikes on it?Also a seller can tell you what ever he wants to is wrong with it. Also a truck with the money your spending your not going to get much of a truck. Trucks are expensive and everyone wants and needs one for there work.
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Monday, November 12th, 2018 AT 4:04 PM (Merged)
Tiny
REDNECKGP
  • MEMBER
  • 5 POSTS
That is very true and he is the seller! It has 214000 miles. I'm also looking at a 99 dodge ram 5.9 4x4 was told the speedometer and odometer quit working and the brake light and the abs light is on he was told it was sensors. Any ideas on that?
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Monday, November 12th, 2018 AT 4:04 PM (Merged)
Tiny
TRENTH05
  • MEMBER
  • 1 POST
  • 2002 DODGE RAM
  • 195,000 MILES
I have a 2002 dodge ram 1500 4x4. It is an automatic with the manual transfer case in the floor. I was driving down the interstate yesterday. When I pushed on the gas to accelerate around a semi I heard a loud pop and now the truck won't drive. The drive shaft is fine. It still goes into gear but it will not move in any gear. If I push on the gas it just Revs up. I can still push the truck if I put it in nuetral. Any idea what it is?
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Monday, November 12th, 2018 AT 4:04 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Bring it in and have the transfer case and transmission checked out thoroughly might want to have it pressure tested to find out more what's going on.
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Monday, November 12th, 2018 AT 4:04 PM (Merged)
Tiny
SATURNTECH9
  • MECHANIC
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That would make sense being a sensor so the 5.9L is a diesel?Also how many miles on that one?
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Monday, November 12th, 2018 AT 4:04 PM (Merged)
Tiny
REDNECKGP
  • MEMBER
  • 5 POSTS
No it is a 5.9 gas in a 99 ram 4x4 it has 123000+ miles.
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Monday, November 12th, 2018 AT 4:04 PM (Merged)
Tiny
REDNECKGP
  • MEMBER
  • 5 POSTS
Thank you for the help. Redneckgrandpa!
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Monday, November 12th, 2018 AT 4:04 PM (Merged)
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
That one sounds better with the mileage. Your welcome were you here to help.
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Monday, November 12th, 2018 AT 4:04 PM (Merged)
Tiny
MOSEVARNEY
  • MEMBER
  • 1 POST
  • 1998 DODGE RAM
  • 214,000 MILES
Can not figure out why my truck is back firing. It only back fires when you go down big hills when driving on the road. As soon as you get to the top of the hill and start going down if you don't either kept the gas on just barely or the brake barely on all the way down the hill then it will start sputtering from the exhaust before the loud back fire. We thought it was bad gas and put treatments in it. We also changed the plugs, distributor cap, rotary button and we still are getting the sputtering and back fires. We only have the one vehicle and can't put it in the shop to find out so can you help with some recommendations so we could fix it on our own.
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Monday, November 12th, 2018 AT 4:04 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 107,922 POSTS
Is this the original motor? If it is, the cause could be several things such as a worn timing chain, burnt valves, vacuum leaks which are very common.
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Monday, November 12th, 2018 AT 4:04 PM (Merged)
Tiny
SCHIRICO
  • MEMBER
  • 5 POSTS
  • 2007 DODGE RAM
  • 90,000 MILES
2007 hemi pick up. I keep having a back fire. One tech said it's a miss fire on cylinder 6&7. I changed all 16 plugs. Still problem. Changed coils on 6, 7&8. Changed the cam or crank sensor (the one right below the alternator). Still having problems. No codes are being thrown on the computer. Help please
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Monday, November 12th, 2018 AT 4:04 PM (Merged)
Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Is the backfire intake or exhaust?
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Monday, November 12th, 2018 AT 4:04 PM (Merged)
Tiny
SCHIRICO
  • MEMBER
  • 5 POSTS
Exhaust
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Monday, November 12th, 2018 AT 4:04 PM (Merged)
Tiny
FIXITMR
  • MECHANIC
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Backfire thru exhaust confirms misfire. So how did old plugs look? Especially 6-7. And does your motor have MDS?
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Monday, November 12th, 2018 AT 4:04 PM (Merged)
Tiny
FIXITMR
  • MECHANIC
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You could try switching injectors on 6-7 with nextdoor cylinders and see if problem moves with them?
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Monday, November 12th, 2018 AT 4:04 PM (Merged)

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