P0303 cylinder #3 misfire
01-02-2007, 06:17 PM
#1
Guest
Posts: n/a
P0303 cylinder #3 misfire
I just started experiencing a rough idle on my 2001 Cherokee (78k
miles). My engine light went on a little after that with the P0303
code. I just replaced the spark plugs, but that didn't help anything.
I was
thinking about changing the ignition coil or fuel injector. One other
possibility I was
thinking was checking the cylinder compression (maybe a gasket leak?).
Anyone have any suggestions?
miles). My engine light went on a little after that with the P0303
code. I just replaced the spark plugs, but that didn't help anything.
I was
thinking about changing the ignition coil or fuel injector. One other
possibility I was
thinking was checking the cylinder compression (maybe a gasket leak?).
Anyone have any suggestions?
01-02-2007, 08:32 PM
#2
Guest
Posts: n/a
Re: P0303 cylinder #3 misfire
01XJ wrote:
> I just started experiencing a rough idle on my 2001 Cherokee (78k
> miles). My engine light went on a little after that with the P0303
> code. I just replaced the spark plugs, but that didn't help anything.
> I was
> thinking about changing the ignition coil or fuel injector. One other
> possibility I was
> thinking was checking the cylinder compression (maybe a gasket leak?).
> Anyone have any suggestions?
http://www.obd-codes.com/trouble_cod...e-detected.php
For rough idle the first thing to do is clean the throttle body and idle air
passage. All it takes is some TB cleaner and an old toothbrush.
--
DougW
> I just started experiencing a rough idle on my 2001 Cherokee (78k
> miles). My engine light went on a little after that with the P0303
> code. I just replaced the spark plugs, but that didn't help anything.
> I was
> thinking about changing the ignition coil or fuel injector. One other
> possibility I was
> thinking was checking the cylinder compression (maybe a gasket leak?).
> Anyone have any suggestions?
http://www.obd-codes.com/trouble_cod...e-detected.php
For rough idle the first thing to do is clean the throttle body and idle air
passage. All it takes is some TB cleaner and an old toothbrush.
--
DougW
01-02-2007, 08:32 PM
#3
Guest
Posts: n/a
Re: P0303 cylinder #3 misfire
01XJ wrote:
> I just started experiencing a rough idle on my 2001 Cherokee (78k
> miles). My engine light went on a little after that with the P0303
> code. I just replaced the spark plugs, but that didn't help anything.
> I was
> thinking about changing the ignition coil or fuel injector. One other
> possibility I was
> thinking was checking the cylinder compression (maybe a gasket leak?).
> Anyone have any suggestions?
http://www.obd-codes.com/trouble_cod...e-detected.php
For rough idle the first thing to do is clean the throttle body and idle air
passage. All it takes is some TB cleaner and an old toothbrush.
--
DougW
> I just started experiencing a rough idle on my 2001 Cherokee (78k
> miles). My engine light went on a little after that with the P0303
> code. I just replaced the spark plugs, but that didn't help anything.
> I was
> thinking about changing the ignition coil or fuel injector. One other
> possibility I was
> thinking was checking the cylinder compression (maybe a gasket leak?).
> Anyone have any suggestions?
http://www.obd-codes.com/trouble_cod...e-detected.php
For rough idle the first thing to do is clean the throttle body and idle air
passage. All it takes is some TB cleaner and an old toothbrush.
--
DougW
01-02-2007, 08:32 PM
#4
Guest
Posts: n/a
Re: P0303 cylinder #3 misfire
01XJ wrote:
> I just started experiencing a rough idle on my 2001 Cherokee (78k
> miles). My engine light went on a little after that with the P0303
> code. I just replaced the spark plugs, but that didn't help anything.
> I was
> thinking about changing the ignition coil or fuel injector. One other
> possibility I was
> thinking was checking the cylinder compression (maybe a gasket leak?).
> Anyone have any suggestions?
http://www.obd-codes.com/trouble_cod...e-detected.php
For rough idle the first thing to do is clean the throttle body and idle air
passage. All it takes is some TB cleaner and an old toothbrush.
--
DougW
> I just started experiencing a rough idle on my 2001 Cherokee (78k
> miles). My engine light went on a little after that with the P0303
> code. I just replaced the spark plugs, but that didn't help anything.
> I was
> thinking about changing the ignition coil or fuel injector. One other
> possibility I was
> thinking was checking the cylinder compression (maybe a gasket leak?).
> Anyone have any suggestions?
http://www.obd-codes.com/trouble_cod...e-detected.php
For rough idle the first thing to do is clean the throttle body and idle air
passage. All it takes is some TB cleaner and an old toothbrush.
--
DougW
01-03-2007, 01:24 AM
#5
Guest
Posts: n/a
Re: P0303 cylinder #3 misfire
I had the same problem. Turns out on the 00's and 01's, there is a problem
with heat soaking into injector #3 and cuasing a misfire. The fix is a heat
wrap availible at the dealer for injector #3. I reset the code, replaced the
plug and and haven't had a problem since.
HTH
Carl
"01XJ" <adam.tsacoumangos@gmail.com> wrote in message
news:1167779855.090317.153570@v33g2000cwv.googlegr oups.com...
>I just started experiencing a rough idle on my 2001 Cherokee (78k
> miles). My engine light went on a little after that with the P0303
> code. I just replaced the spark plugs, but that didn't help anything.
> I was
> thinking about changing the ignition coil or fuel injector. One other
> possibility I was
> thinking was checking the cylinder compression (maybe a gasket leak?).
> Anyone have any suggestions?
>
with heat soaking into injector #3 and cuasing a misfire. The fix is a heat
wrap availible at the dealer for injector #3. I reset the code, replaced the
plug and and haven't had a problem since.
HTH
Carl
"01XJ" <adam.tsacoumangos@gmail.com> wrote in message
news:1167779855.090317.153570@v33g2000cwv.googlegr oups.com...
>I just started experiencing a rough idle on my 2001 Cherokee (78k
> miles). My engine light went on a little after that with the P0303
> code. I just replaced the spark plugs, but that didn't help anything.
> I was
> thinking about changing the ignition coil or fuel injector. One other
> possibility I was
> thinking was checking the cylinder compression (maybe a gasket leak?).
> Anyone have any suggestions?
>
01-03-2007, 01:24 AM
#6
Guest
Posts: n/a
Re: P0303 cylinder #3 misfire
I had the same problem. Turns out on the 00's and 01's, there is a problem
with heat soaking into injector #3 and cuasing a misfire. The fix is a heat
wrap availible at the dealer for injector #3. I reset the code, replaced the
plug and and haven't had a problem since.
HTH
Carl
"01XJ" <adam.tsacoumangos@gmail.com> wrote in message
news:1167779855.090317.153570@v33g2000cwv.googlegr oups.com...
>I just started experiencing a rough idle on my 2001 Cherokee (78k
> miles). My engine light went on a little after that with the P0303
> code. I just replaced the spark plugs, but that didn't help anything.
> I was
> thinking about changing the ignition coil or fuel injector. One other
> possibility I was
> thinking was checking the cylinder compression (maybe a gasket leak?).
> Anyone have any suggestions?
>
with heat soaking into injector #3 and cuasing a misfire. The fix is a heat
wrap availible at the dealer for injector #3. I reset the code, replaced the
plug and and haven't had a problem since.
HTH
Carl
"01XJ" <adam.tsacoumangos@gmail.com> wrote in message
news:1167779855.090317.153570@v33g2000cwv.googlegr oups.com...
>I just started experiencing a rough idle on my 2001 Cherokee (78k
> miles). My engine light went on a little after that with the P0303
> code. I just replaced the spark plugs, but that didn't help anything.
> I was
> thinking about changing the ignition coil or fuel injector. One other
> possibility I was
> thinking was checking the cylinder compression (maybe a gasket leak?).
> Anyone have any suggestions?
>
01-03-2007, 01:24 AM
#7
Guest
Posts: n/a
Re: P0303 cylinder #3 misfire
I had the same problem. Turns out on the 00's and 01's, there is a problem
with heat soaking into injector #3 and cuasing a misfire. The fix is a heat
wrap availible at the dealer for injector #3. I reset the code, replaced the
plug and and haven't had a problem since.
HTH
Carl
"01XJ" <adam.tsacoumangos@gmail.com> wrote in message
news:1167779855.090317.153570@v33g2000cwv.googlegr oups.com...
>I just started experiencing a rough idle on my 2001 Cherokee (78k
> miles). My engine light went on a little after that with the P0303
> code. I just replaced the spark plugs, but that didn't help anything.
> I was
> thinking about changing the ignition coil or fuel injector. One other
> possibility I was
> thinking was checking the cylinder compression (maybe a gasket leak?).
> Anyone have any suggestions?
>
with heat soaking into injector #3 and cuasing a misfire. The fix is a heat
wrap availible at the dealer for injector #3. I reset the code, replaced the
plug and and haven't had a problem since.
HTH
Carl
"01XJ" <adam.tsacoumangos@gmail.com> wrote in message
news:1167779855.090317.153570@v33g2000cwv.googlegr oups.com...
>I just started experiencing a rough idle on my 2001 Cherokee (78k
> miles). My engine light went on a little after that with the P0303
> code. I just replaced the spark plugs, but that didn't help anything.
> I was
> thinking about changing the ignition coil or fuel injector. One other
> possibility I was
> thinking was checking the cylinder compression (maybe a gasket leak?).
> Anyone have any suggestions?
>
01-03-2007, 02:30 PM
#8
Guest
Posts: n/a
Re: P0303 cylinder #3 misfire
With a misfire, I'd be looking at the plug wires or coil. I'd check plug
wires if there was a distributor, or I'd look at the coil if there was a
separate coil for each cylinder, or a coil for every two cylinders.
"01XJ" <adam.tsacoumangos@gmail.com> wrote in message
news:1167779855.090317.153570@v33g2000cwv.googlegr oups.com...
>I just started experiencing a rough idle on my 2001 Cherokee (78k
> miles). My engine light went on a little after that with the P0303
> code. I just replaced the spark plugs, but that didn't help anything.
> I was
> thinking about changing the ignition coil or fuel injector. One other
> possibility I was
> thinking was checking the cylinder compression (maybe a gasket leak?).
> Anyone have any suggestions?
>
wires if there was a distributor, or I'd look at the coil if there was a
separate coil for each cylinder, or a coil for every two cylinders.
"01XJ" <adam.tsacoumangos@gmail.com> wrote in message
news:1167779855.090317.153570@v33g2000cwv.googlegr oups.com...
>I just started experiencing a rough idle on my 2001 Cherokee (78k
> miles). My engine light went on a little after that with the P0303
> code. I just replaced the spark plugs, but that didn't help anything.
> I was
> thinking about changing the ignition coil or fuel injector. One other
> possibility I was
> thinking was checking the cylinder compression (maybe a gasket leak?).
> Anyone have any suggestions?
>
01-03-2007, 02:30 PM
#9
Guest
Posts: n/a
Re: P0303 cylinder #3 misfire
With a misfire, I'd be looking at the plug wires or coil. I'd check plug
wires if there was a distributor, or I'd look at the coil if there was a
separate coil for each cylinder, or a coil for every two cylinders.
"01XJ" <adam.tsacoumangos@gmail.com> wrote in message
news:1167779855.090317.153570@v33g2000cwv.googlegr oups.com...
>I just started experiencing a rough idle on my 2001 Cherokee (78k
> miles). My engine light went on a little after that with the P0303
> code. I just replaced the spark plugs, but that didn't help anything.
> I was
> thinking about changing the ignition coil or fuel injector. One other
> possibility I was
> thinking was checking the cylinder compression (maybe a gasket leak?).
> Anyone have any suggestions?
>
wires if there was a distributor, or I'd look at the coil if there was a
separate coil for each cylinder, or a coil for every two cylinders.
"01XJ" <adam.tsacoumangos@gmail.com> wrote in message
news:1167779855.090317.153570@v33g2000cwv.googlegr oups.com...
>I just started experiencing a rough idle on my 2001 Cherokee (78k
> miles). My engine light went on a little after that with the P0303
> code. I just replaced the spark plugs, but that didn't help anything.
> I was
> thinking about changing the ignition coil or fuel injector. One other
> possibility I was
> thinking was checking the cylinder compression (maybe a gasket leak?).
> Anyone have any suggestions?
>
01-03-2007, 02:30 PM
#10
Guest
Posts: n/a
Re: P0303 cylinder #3 misfire
With a misfire, I'd be looking at the plug wires or coil. I'd check plug
wires if there was a distributor, or I'd look at the coil if there was a
separate coil for each cylinder, or a coil for every two cylinders.
"01XJ" <adam.tsacoumangos@gmail.com> wrote in message
news:1167779855.090317.153570@v33g2000cwv.googlegr oups.com...
>I just started experiencing a rough idle on my 2001 Cherokee (78k
> miles). My engine light went on a little after that with the P0303
> code. I just replaced the spark plugs, but that didn't help anything.
> I was
> thinking about changing the ignition coil or fuel injector. One other
> possibility I was
> thinking was checking the cylinder compression (maybe a gasket leak?).
> Anyone have any suggestions?
>
wires if there was a distributor, or I'd look at the coil if there was a
separate coil for each cylinder, or a coil for every two cylinders.
"01XJ" <adam.tsacoumangos@gmail.com> wrote in message
news:1167779855.090317.153570@v33g2000cwv.googlegr oups.com...
>I just started experiencing a rough idle on my 2001 Cherokee (78k
> miles). My engine light went on a little after that with the P0303
> code. I just replaced the spark plugs, but that didn't help anything.
> I was
> thinking about changing the ignition coil or fuel injector. One other
> possibility I was
> thinking was checking the cylinder compression (maybe a gasket leak?).
> Anyone have any suggestions?
>