My '03 Disco just started with a 'Service Engine Soon' light and is running rough; possibly like a clogged injector.

Any help is appreciated and I apologize in advance if there are previous postings on this. I looked around, but couldn't find anything.



Thanks!

 

Go to Auto Zone and get your codes read for free, then get back to us with the 4 digit numbers so we can help you.

 

The codes I got are: P0306, P0301 and P1300. According to the Autozone guy those indicate a misfire in the 1st and 6th cylynders and an ignition misfire. I bought new Bosch plugs and replaced the old ones, but it does not appear to have fixed the issue, as I still get the light and rough idle.

The Disco only has 37k miles on it.

Any thoughts??

 

What octane gas are you running? It is too early, under most curcumstance, to need new plug wires but it is sounding like that may be the next step.

 

Usually 92, but sometimes 89 octane. Yeah, I really was surprised to have this problem all of a sudden. We haven't had it a year and it came off a lease. I've been really good to it...just one of those things.

So, in looking through some other posts, it appears that changing the plugs is a bit rough. Is it worth attempting or do you advise going to a shop or dealer?

Thanks for your help Mike!

 

Do you have a GOOD friend who is very mechanical? It is not a hard job, but because of the secondary air system, the intake manifold must come off to gain access to the coil packs.

 

I have a great local shop I could approach. They are ASE and AAA certified and work on foreign vehicles a lot. With the codes being dispayed, is there anything else it could be?

I have already ordered the Magencore 8mm wires I saw you recommend in another posting string. Do you recommend getting the coil packs as well?

 

"NO", coil packs shouldn't be an issue with the codes you have.
Ask that shop to look it over and get some feed back from them also.

 

I got the Disco looked at by a local shop and they have found the issue to be a bad coil. They are quoting about $500-$600 for the whole job, including replaceing the intake manifold gasket. Does this sound right?

 

The shop ran a diagnosis ($60) and replaced the ignition coil and plug wires ($194 for coil, $130 for wires + $255 for labor). I also had them put in a new Interstate battery, replacing the original for $98. The Disco is back on the road and running great.