Go Back   DodgeForum.com > Dodge Trucks > Dodge Ram > 2nd Gen Ram Tech
Sign in using an external account
Register Forgot Password?


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.

2000 5.9L spark knock

Reply
 
 
 
 
Thread Tools Search this Thread
  #1  
Old 10-25-2009, 12:47 PM
okcowgirl97 okcowgirl97 is offline
Registered User
Garage is empty, add now
 
Join Date: Oct 2009
Posts: 17
Default 2000 5.9L spark knock

Hey y'all, I was wondering if you could help me out a bit. I have spark knock under accleration at about 45-50 mph and maintaining speed between 65-70 mph. I have changed the timing chain and gear, retarded the timing, and replaced the plenum and intake gaskets. Problem still isn't solved. Does anyone have anymore ideas? (And a stick of dynamite isn't an option *L*) Thanks.

Alyssa
This ad is not displayed to registered and logged-in members.
Register your free account today and become a member on Dodge Forums!
Reply With Quote
  #2  
Old 10-25-2009, 12:51 PM
Cereal Killer's Avatar
Cereal Killer Cereal Killer is offline
Champion
Garage is empty, add now
 
Join Date: Feb 2007
Location:
Posts: 3,014
iSLAMcougars
Default

You could try running slightly cooler plugs, or higher octane gas, but that's really more of a band-aid.

I'm sure someone will have something more useful to contribute.
__________________
Reply With Quote
  #3  
Old 10-25-2009, 12:59 PM
zman17's Avatar
zman17 zman17 is offline
Section Moderator
Dodge Forum Moderator
2000 Dodge Ram 2500
 
Join Date: May 2008
Vehicle: 2000 2500HD 4x4 5.9
Location: NH
Posts: 18,729
Default

Could be the deathflash. Is there a hand written sticker on the pcm saying it's been updated? A 2000 might even have it from the factory. A tuner would fix it.
__________________
2000 2500HD 4X4 5.9 and 4:10's,HF tuned SCT,Red-Head gear box, HS 1.7's,
50mm Fastman TB, Hughes Plate,2" Hell Bent ,Volant CAI
Flowmaster 50 series, Rock Solid Ram Steering fix,B&M trans cooler,fuzzy dice good for 5HP
Reply With Quote
  #4  
Old 10-25-2009, 01:10 PM
okcowgirl97 okcowgirl97 is offline
Registered User
Garage is empty, add now
 
Join Date: Oct 2009
Posts: 17
Default

Where is the PCM located and I'll go look for that sticker? and what's a deathflash? honestly, it sounds kind of scary...also, forgot that occasionally, it will cause my check engine light to come on (sometimes solid and sometimes blinking) and i've had it scanned and the scanner is not coming up with any codes.
Reply With Quote
  #5  
Old 10-25-2009, 01:16 PM
jasonw's Avatar
jasonw jasonw is offline
Site Moderator
Dodge Forum Moderator
2010 Dodge Dakota
My Garage
 
Join Date: Jan 2008
Vehicle: 2010 Dodge Dakota 4x4 Quad Cab
Location: Sioux Falls, SD
Posts: 8,249
Default

The stock "death flash" wouldn't cause pinging/spark knock, its designed to prevent it.

How did you retard the timing? Only way to do it on these trucks is with a tuner, you can't manually adjust it like you could on the older vehicles. Turning the distributor or whatever you may have done is bad, causes issues. Undo it.

The stock computer's "death flash" (do a search) retards the timing to far as it is anyway.

After you changed the plenum, did you reset the computer (disconnect the battery, turn on the headlights for a few seconds, turn off the headlights, reconnect the battery)?

Have you checked fuel pressure at the rails? Tested the injectors? Any upgrades to your truck? How long since your last tune-up? (What plugs, wires do you use?)
Reply With Quote
  #6  
Old 10-25-2009, 01:19 PM
Cereal Killer's Avatar
Cereal Killer Cereal Killer is offline
Champion
Garage is empty, add now
 
Join Date: Feb 2007
Location:
Posts: 3,014
iSLAMcougars
Default

You can retard the timing at the chain, which I'm assuming is what she did since she said she replaced the chain. I don't think that would cause an issue.
__________________
Reply With Quote
  #7  
Old 10-25-2009, 01:38 PM
Trey318's Avatar
Trey318 Trey318 is offline
Captain
Garage is empty, add now
 
Join Date: Apr 2008
Vehicle: 1998 Dodge Ram 1500 QC 5.2L Auto 2wd
Location: Galveston, Texas
Posts: 723
Send a message via AIM to Trey318
Default

If the CEL has come on before, it should be stored on the computer. Have it scanned and see what comes up.
__________________
'98 Dodge Ram 1500
My CarDomain Page
Viper Red Truck Club Member #001
Reply With Quote
  #8  
Old 10-25-2009, 01:40 PM
Sheriff420's Avatar
Sheriff420 Sheriff420 is offline
Grand Champion
2000 Dodge Ram 1500
 
Join Date: Apr 2008
Vehicle: 2000 Dodge Ram 1500 4x4 5.2
Location: Lee County, North Carolina
Posts: 6,844
Send a message via AIM to Sheriff420
Default

the colder plugs that were mentioned are Autolite 3923. they foul faster because they are colder but they are cheap if you get them at walmart. so changing the plugs every 15k won't break the bank.

try running 89 octane first. my dads 98 knocks if he runs 87 but not with 89.

and c4 is much more effective than dynamite.
__________________

Airgap. HS 1.7s. 50mm DIY TB. SC 3815. 14x2. 4.10 Yukons. Detroit Truetrac-both axles. Front hitch. Rear hitch lights with skid plates. 4 100w off road lights in brush guard. 2 55w lights in front bumper. Westin brush guard/nerf bars. 33" Treadwrights.
Reply With Quote
  #9  
Old 10-25-2009, 01:44 PM
okcowgirl97 okcowgirl97 is offline
Registered User
Garage is empty, add now
 
Join Date: Oct 2009
Posts: 17
Default

started about a week after plugs were changed (wires havent been changed for awhile and those were whatever autozone carries). champion RC12LC4 (436) plugs were gapped before they were put in. timing was retarded at distributor (dodge dealer mechanic said i could do this, guess he was wrong *sighs*) the rails and injectors have been tested and they all came out as having no problems. the computer was reset after the plenum gasket was changed, changed the thermostat while was in there as well. no upgrades have been made except for the tranny being beefed up a bit for pulling. oil, plugs, and filters were changed about a month ago.
Reply With Quote
  #10  
Old 10-25-2009, 01:48 PM
okcowgirl97 okcowgirl97 is offline
Registered User
Garage is empty, add now
 
Join Date: Oct 2009
Posts: 17
Default

It's been scanned since the CEL has come on and nothing comes up. No error codes or anything. Tried running 91 octane, still knocks. Right now, down to considering hijacking the pcm out of a 98 that I have sitting in the yard with a bad tranny but really, really dont want to do that because im afraid it will cause even more issues.
Reply With Quote
Old 10-25-2009, 01:48 PM
 
 
 
Reply




Tags
plenum, spark knock

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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

Join DodgeForum
Advertising

Featured Sponsors
Vendor Directory
Our Sponsors
All times are GMT -4. The time now is 06:10 AM.

Internet Brands, Inc.


Contact Details & Emails