Questions & Answers for: Jeep code 306 Computers & Internet

Question about 2003 Grand Cherokee

1 Answer

...306, 442, 456. Turn it back on. Everything is fine again. I would start with a test drive with a fuel pressure gauge on it make sure you have spec. 35 - 40 psi. Clear codes and record all the freeze ...

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...car skips a bit now and then. Could this be something with the transmission? check to see what the codes are in the computer. if it is a 300 to 306 or 308 depending on the engine size.these are ...

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..., plugs , and plug wires in my 96 grand cherokee and now it is missfireing all cylinders (error codes 301-306). the fireing order is all correct . i did use 5w30 oil instead of the recomended ...

...and wires 96 Gand 4.0L when i was done the truck ran like **** i so i had diagnostics done it gave codes 301-306 (all cylinders missfire ) then i changed the distributor cap rotor and ignition coil ...

...order 96 Gand 4.0L when i was done the truck ran like **** i so i had diagnostics done it gave codes 301 302 302 304 305 306 (all cylinders missfire ) then i changed the distributor cap rotor

...code showing for my 2004 3.7 liter V6 Jeep Liberty. There is a loud knocking/popping associated with this misfire. I have changed all of the spark plugs and the ignition coil for cylinder 6....same ...

Question about 2003 Wrangler

1 Answer

Code 306 is for loss of power from cylinder 6 which could be mechanical, fuel, or spark related. The three codes are not connected to each other. And trouble codes are not a statement to replace parts

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