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Mike c
Dodge Dakota
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6/30/2009
19:21:25
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 Subject: 98 Grand cherokee Pings
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I got a full tune about 3 months ago. It has 130k on the motor. Could it be to cold of a plug because it did not do this before the tune up.
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daddio
Dodge Dakota
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6/30/2009
19:35:01
| RE: 98 Grand cherokee Pings
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If anything a colder plug would help pinging, not increase it. Does the engine use any oil?
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zonk
Dodge Dakota
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6/30/2009
19:36:09
| RE: 98 Grand cherokee Pings
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We dont no nuthin about no jeeps here man.
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Mike c
Dodge Dakota
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6/30/2009
19:53:51
| RE: 98 Grand cherokee Pings
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No it does not use any oil
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daddio
Dodge Dakota
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6/30/2009
20:11:03
| RE: 98 Grand cherokee Pings
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Have you serviced the cooling system lately? Do you have the stock 195 t-stat? you could try a 180 degree stat. Could be carbon buildup in the combustion chamber.
What plugs ar you running?
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hey
Dodge Dakota
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6/30/2009
21:23:25
| RE: 98 Grand cherokee Pings
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I've tried the 180 T stat on 2 trucks now.
ya it solved the pinging but both trucks ate up more gas then they did before
and 1 would trip a code daily in winter
it was just tuned
check the wire routing
and I don't know what they/you installed for plugs
but I would highly recommend NGK FR5's
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mac
GenI
6/30/2009
22:26:47
| RE: 98 Grand cherokee Pings
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Assume it is a v8, 318 likely.
have you changed your plug wires recently?
There is a TSB about routing plug wires on a 318 to avoid cross firing and pinging resulting from such. TSB
Can't recall the number but try googling "Dodge TSB spark plug wires" or some such.
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Mike c
Dodge Dakota
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6/30/2009
23:24:48
| RE: 98 Grand cherokee Pings 5.9
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my buddy told me to put some autolite 3923 for plugs you know anything about them. Im not sure but i think i have champion rc12lc4 wich are suppose to be stock
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daddio
Dodge Dakota
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7/01/2009
08:28:42
| RE: 98 Grand cherokee Pings
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Mike c, Hey did have a good suggestion with the NGK FR5's. These engines do seem to like them. The Autolite's are OK, a lot of people posting on here have used them but IMO, the NGK's are better.
Also, check for that TSB that mac mentioned about re-routing the spark plug wires. Especially since you say this started after the tune up.
A can of Seafoam wouldn't hurt either. When you follow the directions on the can, this stuff will clean the combustion chambers and injectors better than anything else I've tried.
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hey
Dodge Dakota
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7/01/2009
10:48:03
| RE: 98 Grand cherokee Pings
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me again
and yes as i said above in my other post
it was just tuned
check wire routing
and what kind of condition
are the wires in?
or are they new? sorry if I missed it
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hey
Dodge Dakota
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7/01/2009
10:52:48
| RE: 98 Grand cherokee Pings
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ok Mike C
head here
(copy an paste into your browser)
you've got alot of reading to do
http://dodgeram.org/tech/gas/Trouble/ping.htm
and make note
all the 3.9 5.2 & 5.9 motors are the same
no matter if in a jeep, Dakota or Ram
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daddio
Dodge Dakota
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7/01/2009
11:16:07
| RE: 98 Grand cherokee Pings
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http://dodgeram.org/tech/gas/Trouble/ping.htm
Yes, that is a great write up. In fact, i got rid of my mild pinging by running the Bosch Reg Platinums not the +4's.
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