2005 Dodge Ram engine gets hot and # 5 cly misfires

Tiny
GATORM4
  • MEMBER
  • 2005 DODGE RAM
  • V8
  • 4WD
  • AUTOMATIC
  • 83,000 MILES
I have replaced thermostat and waterpump but truck is
still running hot. After driving several miles after parking
overnight goes into overflow tank but does not draw back
into radiator. I have to add coolant each time it is driven.
What else do I need to replace to correct this problem?
Engine light came on, had it checked at Auto Zone and
code showed #5 cylinder misfiring, there is no sign of water in oil. Any suggestions will be appreciated.
Do you
have the same problem?
Yes
No
Wednesday, September 1st, 2010 AT 11:22 PM

11 Replies

Tiny
MHPAUTOS
  • EXPERT
Hi there,

Thank You for the donation,

have the pressure cap tested as if it is faulty you will not drew back into the radiator, also pressure check for any external leaks, check for a faulty plug & lead or coil if COP system, also any local vacuum leak around No 5 cyl.

Mark (mhpautos)
Was this
answer
helpful?
Yes
No
Thursday, September 2nd, 2010 AT 1:10 AM
Tiny
GATORM4
  • MEMBER
Got a new cap still goes into overflow tank after driving

but still not going back into the radiator

will check the pug and wire and for vacuum leak
how do you check the coil to see if it is bad
Was this
answer
helpful?
Yes
No
Friday, September 3rd, 2010 AT 9:14 AM
Tiny
MHPAUTOS
  • EXPERT
Hi there,

if the coolant will not draw back into the system with a new cap, there will be a small leaks somewhere as when the system is cooling it creates a partial vacuum which causes atmospheric pressure action on the head of coolant to flow back into the system, with no partial vacuum, pressures are equal and you get no flow, do you own and know how to read a multimeter for the coil tests?

Mark (mhpautos)
Was this
answer
helpful?
Yes
No
Friday, September 3rd, 2010 AT 9:39 AM
Tiny
GATORM4
  • MEMBER
Yes I know how to read a mulimeter. In be a small leak
Was this
answer
helpful?
Yes
No
Sunday, September 5th, 2010 AT 1:34 PM
Tiny
MHPAUTOS
  • EXPERT
http://www.2carpros.com/topics/electrical/coil-pack

Mark (mhpautos)
Was this
answer
helpful?
Yes
No
Sunday, September 5th, 2010 AT 6:47 PM
Tiny
GATORM4
  • MEMBER
Do you check coil pack the same way.
Was this
answer
helpful?
Yes
No
Monday, September 6th, 2010 AT 12:26 AM
Tiny
MHPAUTOS
  • EXPERT
I will look for the specific test for the coil pack, sorry should of realized that.

Mark
Was this
answer
helpful?
Yes
No
Monday, September 6th, 2010 AT 2:24 AM
Tiny
GATORM4
  • MEMBER
Engine is running rough took auto zone and had check
now 3 cly and 5 cly misfiring
Was this
answer
helpful?
Yes
No
Monday, September 6th, 2010 AT 7:13 PM
Tiny
MHPAUTOS
  • EXPERT
I will require a specific model & engine size as Dodge Ram is not info for detailed searching.

Mark (mhpautos)
Was this
answer
helpful?
Yes
No
Monday, September 6th, 2010 AT 7:34 PM
Tiny
GATORM4
  • MEMBER
I have run compression check on all cyls. All have 150lbs
except no. 3 is 120lbs. Ran computer chk shows 3 - 5 cyl
misfiring but have changed plugs on all eight and cleared
check eng light code and now no. 3 is still misfiring. Have
changed coils, moved no 3 to no.1 and 1 to 3 hoping it was a coil, clleared check eng code again, and no. 3 is
still misfiring. A brand new pluig is black, does this mean
cyl too rich? At loss for what to do now. Any suggestions?
Was this
answer
helpful?
Yes
No
Thursday, September 9th, 2010 AT 9:16 PM
Tiny
MHPAUTOS
  • EXPERT
Either you have a faulty injector or the low comp is causing you a problem, do a wet comp test to see if it is rings or a valve causing the lower compression.

Mark (mhpautos)
Was this
answer
helpful?
Yes
No
Friday, September 10th, 2010 AT 2:23 AM

Please login or register to post a reply.

Recommended Guides