V10 Mis-fire question - DodgeForum.com

Go Back  DodgeForum.com > Dodge Trucks > Dodge Ram > 2nd Gen Ram Tech
Reload this Page > V10 Mis-fire question
Notices
2nd Gen Ram Tech 1994-2001 Rams: This section is for TECHNICAL discussions only, that involve the 1994 through 2001 Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.

V10 Mis-fire question

Reply

 
 
  #1  
Old 07-14-2012, 09:57 PM
Bonkers's Avatar
Bonkers
Bonkers is offline
Registered User
Thread Starter
Join Date: Apr 2010
Posts: 11
Default V10 Mis-fire question

I have a 2000 Ram V10 that has a chronic misfire in #10.

A few months ago she threw rocker bolt #8. I replaced the bolt and
swapped in new rod bearings at the same time. Truck ran fine for about a
week then developed an intermittent miss on #10. I did a complete tune-
up, swapped another spark plug and wire, replaced the coil, cleaned the
fuel line and replaced the injector, and compression checked the cylinder
(130#.) None of these things had any effect on the miss no offered any
suggestions as to the problem.

The misfire is very, very erratic - my first thought is a sensor/ecu issue??

My daily driver has broken down so now a mild weekend annoyance has
become a serious issue that need attention. I am hoping someone here
has encountered this issue - any suggestions or observations?
 

Last edited by Bonkers; 07-14-2012 at 09:59 PM.
Reply With Quote
  #2  
Old 07-14-2012, 10:11 PM
HeyYou's Avatar
HeyYou
HeyYou is offline
Super Moderator
Join Date: Apr 2010
Location: Clayton MI
Posts: 47,780
Default

Is it JUST cylinder 10? What did compression look like on the other cylinders?
 
Reply With Quote
  #3  
Old 07-14-2012, 11:38 PM
Bonkers's Avatar
Bonkers
Bonkers is offline
Registered User
Thread Starter
Join Date: Apr 2010
Posts: 11
Default

Compression numbers (as done by shop
#02 130psi
#04 135psi
#06 130psi
#08 125psi
#10 130psi

They seem low to me, but according to computer these are all within
spec. The mechanic wanted to tear apart the motor to find miss, but
that would have been $$$ that I don't have to spare right now.

When I pull the wire off of #10 the misfire smooths completely out to what
you would expect on a bad cylinder. I am as amatuer as it comes to
dealing with motors so I don't know what else I can do to determine if
another cylinder is missing as well. I am fairly confident at this point that
its just the one cylinder misfiring, and that it's misfiring randomly about
10% of the time.
 
Reply With Quote
  #4  
Old 07-15-2012, 10:02 AM
HeyYou's Avatar
HeyYou
HeyYou is offline
Super Moderator
Join Date: Apr 2010
Location: Clayton MI
Posts: 47,780
Default

As far as dodge is concerned, anything over 100 PSI is acceptable, so long as all cylinders are within 25% (or so) of each other. Your numbers look pretty consistent, and not to bad for a high mileage motor.

Are you getting misfire codes? I would take a look at the cylinder that is paired with number 10 on the coil, and see if that one is misfiring as well. Were you able to replace just the individual coil, are did you have to replace all coils, and the module on that set? (I think you have coils that are actually separate from the modules on a 2000?)

One thing I don't see mentioned, is checking connections at the PCM side of things. It hangs out under the hood, on the passenger side firewall... Might wanna pull the plugs there, and check/clean them.
 
Reply With Quote
  #5  
Old 08-27-2017, 01:16 AM
Matthew9056
Matthew9056 is offline
Registered User
Join Date: Aug 2017
Posts: 5
Default Problem

Hi everyone, I have a 2001 Dodge Ram 2500 V10 and it's miss fireing on 4 of ten cylinders and I have absolutley no idea why, does anyone have any sedjestions, thanks everyone
 
Reply With Quote
  #6  
Old 08-27-2017, 10:51 AM
HeyYou's Avatar
HeyYou
HeyYou is offline
Super Moderator
Join Date: Apr 2010
Location: Clayton MI
Posts: 47,780
Default

Originally Posted by Matthew9056 View Post
Hi everyone, I have a 2001 Dodge Ram 2500 V10 and it's miss fireing on 4 of ten cylinders and I have absolutley no idea why, does anyone have any sedjestions, thanks everyone
Which four cylinders?
 
Reply With Quote
  #7  
Old 08-27-2017, 03:52 PM
Matthew9056
Matthew9056 is offline
Registered User
Join Date: Aug 2017
Posts: 5
Default

Originally Posted by HeyYou View Post
Which four cylinders?
I don't know which cylinders, but my spark plugs are rusted to the cylinder head, every single one of them, and the wires are pretty bad so i'm thinking that may be the problem, Do you know how long it would take to get them off and replace the starting wires? thanks for the response.
 
Reply With Quote
  #8  
Old 08-27-2017, 04:49 PM
Jimythefan
Jimythefan is offline
Captain
Join Date: Mar 2011
Location: Milford NH
Posts: 614
Default

I just did plugs and wires on mine. Passenger side is a breeze. Everything is right there with good access. Driver side, not so much. Plugs 7 and 9 are hard to reach and I found it easier to lay across the core support and battery to reach back along the side of the block. Make sure the socket is firmly on the plug base so it doesn't slip. If you have an air compressor, make sure you blow out the plug areas before removing the plugs. The plug heat shields are easier to remove on the V10 than the V8 so that shouldn't be as much of an issue.
 
Reply With Quote
  #9  
Old 08-27-2017, 05:15 PM
Matthew9056
Matthew9056 is offline
Registered User
Join Date: Aug 2017
Posts: 5
Default

Originally Posted by Jimythefan View Post
I just did plugs and wires on mine. Passenger side is a breeze. Everything is right there with good access. Driver side, not so much. Plugs 7 and 9 are hard to reach and I found it easier to lay across the core support and battery to reach back along the side of the block. Make sure the socket is firmly on the plug base so it doesn't slip. If you have an air compressor, make sure you blow out the plug areas before removing the plugs. The plug heat shields are easier to remove on the V10 than the V8 so that shouldn't be as much of an issue.
Thankyou very much, how hard is it to get a spark plug out if it got snapped off?
 
Reply With Quote
  #10  
Old 08-27-2017, 07:26 PM
HeyYou's Avatar
HeyYou
HeyYou is offline
Super Moderator
Join Date: Apr 2010
Location: Clayton MI
Posts: 47,780
Default

Major pain, graduating to darn near impossible, depending on which one it is. I would be tempted to remove the plug wires, pour some pb blaster onto each plug, and leave it sit for a day before trying to pull 'em. And definitely blow all the crap out beforehand.
 
Reply With Quote
 
 
 

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
DaKotaK
1st Gen Dakota
4
08-19-2015 10:34 PM
nckfrs
2nd Gen Ram Tech
3
08-14-2015 02:28 PM
kkxlt05
2nd Gen Durango
2
07-30-2015 01:40 AM
13ram1500
4th Gen RAM general discussion/NON-tech
5
07-23-2015 11:51 PM
jrmikucki
2nd Gen Dakota
4
07-05-2015 04:09 PM

Thread Tools
Search this Thread
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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Featured Sponsors

All times are GMT -4. The time now is 04:36 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: