SilverBack 00

it has the 5.9l 4x4 . symptom bad miss...
was running 65 on cruise controll and felt the miss going down the road it just happened.if u run 35-55 on o/drive it shakes ,35-55 no o/drive it shakes .in park @ idle and run rpm 750-2000 u feel it . figured i'd put tune up on it, but last tune up was 3-4 months ago. did tune plugs,wires,cap,rotor still misses run it to 75-80mph smooths out . put idle sensor ,o2 sensors,coil pack still a bad miss.Did compression test #1 145 #2 145 #3 105 #4 110 #5 128 #6 142 #7 128 #8 138 tested each cyl 3 times could b 3psi off ....plugs from tune up 3-4 months ago 7 clean burns no tarnish #1 had tarnish or discoloration.Plugs from tune up 2 days ago 7 clean burns no tarnish #1 had tarnish or discoloration. now I know that the cylinders psi needs help. I've pulled plugs and fired over all have spark going thru them. what would cause this truck to miss on just 1 cylinder ??????? I'm 3 days into this and stumped.
I know engine could use a rebuild , just don't get why I only miss on 1 cyl when five have bad compression. lmk please going into fuel system now. harmonick balencer seems fine not pushing belt off .

Dano Moparo

Only thing I could find possibly releated.

NO: 18-48-98

SUBJECT: Ignition System Cross Fire/Secondary Ignition Wire Induction

DATE: Dec. 30, 1998

NOTE:THIS INFORMATION APPLIES TO VEHICLES EQUIPPED WITH A 3.9L, 5.2L, OR 5.9L ENGINE.AB MODELS WILL BE ADDED LATER (NEW PARTS REQUIRED).

SYMPTOM/CONDITION:

Some vehicles may exhibit one or more of the following:

• Spark knock complaints when the vehicle is under load.
• Various single cylinder misfire (1, 3, 7), especially 5 and/or 8.
• Surge in 4th gear with the Electronically Modulated Converter Clutch (EMCC) engaged (around 45 mph).
• Perceived torque converter EMCC engagement/disengagement around 45 mph.

DIAGNOSIS:

Using the Mopar Diagnostic System (MDS/MDS 2) or the Diagnostic Scan Tool (DRB IIIŽ) with the appropriate Diagnostic Procedures Manual, verify all engine/transmission systems are functioning as designed. If other than mentioned Diagnostic Trouble Codes (DTC's) are present, record them on the repair order and repair as necessary before proceeding further with this bulletin. If no DTC’s are present or if the above symptoms/conditions have been described by the customer, perform the Repair Procedure.
NOTE: THIS REROUTING PROCEDURE SHOULD BE PERFORMED BEFORE ANY OTHER MISFIRE, SURGE, OR SPARK KNOCK REPAIRS ARE ATTEMPTED.
PARTS REQUIRED:

QtyPart No.Description356028186Clip, Single Wire206503441Clip, Wire To Hose (5.2L & 5.9L)104364375Convolute, 10 ft Roll

REPAIR PROCEDURE:

This bulletin involves rerouting the coil wire for all engines listed and rerouting the 4, 5, 7, and 8 plug wires for the 5.2/5.9L applications to minimize induction effects.
NOTE: IF WIRES MUST CROSS DURING THE REROUTE PROCEDURE, THEY MUST CROSS AT A 90O ANGLE.
5.2L AND 5.9L ENGINE PROCEDURES

1. Coil Wire Routing (and )
   1. Remove the coil wire from the distributor cap coil wire tower terminal.
   2. Remove the coil wire from the rear five-wire clip, the center three-wire clip, and the front one-wire clip located along the lower side of the right valve cover.
   3. Install three (3) one-wire clips p/n 56028186 along the top and front of the valve cover. Use the studs of the valve cover retaining bolts (). NOTE: SOME APPLICATIONS MAY ONLY HAVE STUD LOCATIONS FOR 3 OF THE ONE-WIRE CLIPS.
   4. Route the coil wire starting from the ignition coil toward the distributor. Any excess wire should end up at the distributor end.
   5. Install the coil wire into the one-wire clips. This procedure may be easier to perform while the coil wire is loose from the valve cover (before the one-wire clips are attached to the valve cover studs).
   6. Cut the ignition wire convolute p/n 04364375 into three lengths 203 mm (8 in.), 101.5 mm (4 in.), and 82.5 mm (3.25 in.).
   7. Slit and install the three sections of convolute onto the coil wire between the one-wire clips. Install the 82.5 mm (3.25 in.) section at the front of the right valve cover. Install the 203 mm (8 in.) and the 101.5 mm (4 in.) sections along the top side of the right valve cover. This procedure may be easier to perform while the coil wire is loose from the valve cover (before the clips are attached to the valve cover studs).
   8. Route the distributor end of the coil wire down and behind the intake manifold, in front of the oil pressure switch (). NOTE: THE COIL WIRE MUST BE A MINIMUM OF ONE (1) INCH AWAY FROM ANY OTHER IGNITION WIRES. THIS MAY REQUIRE THAT THE COIL WIRE BE ROUTED UNDER VACUUM AND/OR WIRE HARNESSES IN THE RIGHT REAR CORNER OF THE INTAKE MANIFOLD.
   9. Route the distributor end of the coil wire up the side of the distributor cap and onto the coil wire tower terminal.
   10. Position the original piece of coil wire convolute so it protects the wire against chafing with components at the rear of the engine.
2. No. 8 Cylinder Plug Wire Routing ()
   1. Remove the No. 8 cylinder plug wire from the distributor cap tower terminal.
   2. Remove the No. 8 cylinder plug wire from the five-wire clip located at the lower rear of the valve cover.
   3. Route the No. 8 cylinder plug wire over the rear quarter of the right valve cover ().
   4. Position the original piece convolute from the No. 8 cylinder plug wire to prevent chafing at the right valve cover and with other engine components.
   5. Secure the No. 8 cylinder plug wire and its convolute in place with the hose to wire clip p/n 06503441. The small end of the clip is positioned over the convolute. The large end of the clip is fastened to a heater hose (A/C line on ZJ models). NOTE: MAKE SURE THE NO. 8 CYLINDER PLUG WIRE IS SECURE AND AWAY FROM THE COIL WIRE AND THE NO. 4 CYLINDER PLUG WIRE. MAKE CERTAIN IT WILL NOT FALL DOWN AND CONTACT THE CYLINDER HEAD AND/OR EXHAUST COMPONENTS.
   6. Install the No. 8 cylinder plug wire to its distributor cap terminal.
3. No. 4 Cylinder Plug Wire Routing (
   1. Remove the No. 4 cylinder plug wire from the distributor cap terminal.
   2. At the three-wire clip (located at the center of the lower side of the right valve cover), keep the two wires from crossing and chafing each other. Position the No. 2 cylinder plug wire in the top wire slot and the No. 4 cylinder plug wire in the bottom wire slot. Leave the middle wire slot empty ().
   3. At the five-wire clip (located at the right rear lower side of the valve cover), keep the plug wires from crossing and chafing each other. Position the No. 4 cylinder plug wire in a slot that will obtain the maximum amount of distance allowable from the No. 8 cylinder plug wire (). Remove any slack in the No. 4 cylinder plug wire between the three-wire and the five-wire clips. NOTE: EARLIER MODEL FIVE-WIRE CLIPS LOOK SLIGHTLY DIFFERENT BUT THE SAME WIRING LAYOUT APPLIES.
   4. Route the No. 4 cylinder plug wire behind the transmission dipstick tube and heater hoses. On ZJ models this may not be possible due to the location of the bulkhead. NOTE: MAKE SURE THAT THE NO. 4 CYLINDER PLUG WIRE IS, AT LEAST ONE INCH, AWAY FROM THE NO. 8 CYLINDER PLUG WIRE.
   5. Install the No. 4 cylinder plug wire to its distributor cap terminal ().
4. No. 7 Cylinder Plug Wire Routing ( and )
   1. Verify that the No. 7 cylinder plug wire crosses over the distributor cap and leaves the distributor cap between the No. 3 and the No. 6 tower terminals ). This is the original wire routing for 1998 and prior model years.
   2. For 1999 M.Y. vehicles the No. 7 cylinder plug wire was shortened. Reroute the No. 7 cylinder plug wire so that it crosses the distributor cap and leaves the distributor cap between the No. 6 and the No. 5 tower terminals ().
   NOTE: MAKE SURE THE NO. 7 CYLINDER PLUG WIRE IS, AT LEAST ONE INCH, AWAY FROM THE NO. 5 CYLINDER PLUG WIRE.
5. No. 5 Cylinder Plug Wire Routing ()
   1. Remove the No. 5 cylinder plug wire from its distributor cap terminal.
   2. Remove the No. 5 cylinder plug wire from the five-wire clip located at the lower rear of the left valve cover.
   3. Route the No. 5 cylinder plug wire over the left valve cover and in front of the breather tube elbow.
   4. Position the original convolute from the No. 5 cylinder plug wire to prevent chafing against the valve cover and any engine components. Secure the small end of the hose to wire clip p/n 06503441 over the convolute. Secure the large end of the hose to wire clip to the breather hose.
   NOTE: MAKE SURE THE NO. 5 CYLINDER PLUG WIRE IS SECURE AND AWAY FROM THE NO. 7 CYLINDER PLUG WIRE. MAKE CERTAIN IT WILL NOT FALL DOWN AND CONTACT THE CYLINDER HEAD AND/OR EXHAUST COMPONENTS.

SilverBack 00

that is some good info thanks alot .... put in new injectoer in #1 cyl seems to have cleared up the miss in cylinder , new symtom now is black smoke out exhaust and throttle body sucking air @ map sensor . I haven't changed that . try that tomorrow .....

Dano Moparo

There was a problem with intake gaskets on them too. If your having an oil consumption problem and they have never been changed, I would look into replacing them.

SilverBack 00

dosen't seem to be having that problem YET!! I got it were the miss is gone now . I'm going to go ahead and do a head job on it hear real soon I just needed to find that miss ... I tell you what cars or trucks with all this computerized crap makes it real hard to find what is really wrong ... all engines need to go back to the old school it was a lot easier then to figure out what was wrong ... thanks for the help man !! u work for Dodge or something?

Dano Moparo

Nope, just stayed at a Holiday Inn last night'... j/k

I work at a Chrysler dealer. Your right about the stuff being hung on cars now. You would think that after all these years it would be easier for the tech's to diagnois. Things are more complicated now that ever.

tampatsi21

+1
all the newer cars can be a pain if you dont have the service info available...i work at a D.C.J dealership also.