'03 Disco II in need of "just a tune up?"

[Dainon's D2]

I have a 2003 Discovery II w/80k miles. I've had it for a few years and always run 93 octane. The engine light came on, then started blinking. I took it to a local shop. The said I have a misfire on 4 cylinders. He said he tried cleaning the Mass Air but that didn't help. He's now saying I need "just a full tune up" that will include plugs, wires, & 2 coil packs. He said he'd need to remove the plenum so the total cost will be $900.

My question - do you have to remove the plenum to change just the plugs & wires? I don't have $900, so I'm trying to figure out if there's a way I can get the truck "mostly fixed" by just doing the plugs & wires in my garage.

Any help is greatly appreciated...

[DiscoDream2]

http://www.kingsborne.com/ for your wires - get champion NLP 100320 or some say the bosh plugs. You will get plenty of input for sure, search the threads there are some that have removed plenum, some that have not.

I have done it three times all different. Try wires and plugs first, if it's a coil that is no fun. A MAFS can be a few bucks if they messed it up, "cleaning" it. $900 is high and mostly labor.

Have you had the codes read yet?





**Do not get budget wires and plugs you must have the real deal. Kingsborne or Magnacores only.

[Dainon's D2]

Back on 8/26 I had the codes read at AutoZone. They gave me several "printouts" that were on receipt paper. The codes were:

P0300
P0304
P0305
P0308
P1300

[DiscoDream2]

Originally Posted by Dainon's D2

Back on 8/26 I had the codes read at AutoZone. They gave me several "printouts" that were on receipt paper. The codes were:

P0300
P0304
P0305
P0308
P1300

= Random Misfire and a Chassis Acceleration Sensor Signal Low.

Start with plugs and wires no coil yet. It's a weekend DIY 2-3 hours. Seen it done in 75 minutes.

[p76rangie]

Originally Posted by DiscoDream2

Start with plugs and wires no coil yet. It's a weekend DIY 2-3 hours. Seen it done in 75 minutes.

How much drinking was going on for it to take 75 minutes. I would think that even a novice should be able to do it in 30 minutes.

[DiscoDream2]

LOL! If those cans of Foster's weren't sooooo big!

[Disco Mike]

"= Random Misfire and a Chassis Acceleration Sensor Signal Low." There is no such code for a Rover.
He has to deal with 3 misfiring cylinder and 2 emission misfires only.

As for the 03, sounds like it has not been maintained for some time. What octane gas are you running?
Yes, the wires can be removed without removing the manifold.
For around $300, I can walk you thru doing my service that will give you a more up todate truck then that shop would have for $900. Do everything on this list.

1 Oil filter, K&N 3001 or Mobil 1- 301
1 Factory air filter
6 Qts. of engine oil
2 feet of 3/16th vacuum tube
2 feet of 5/16th vacuum tube
12 Qts. of ATF
7 Qts. of 80/90W synthetic gear oil, 85W/140 for HD use
3 Pints of synthetic DOT 4 Brake fluid
2 Qts of synthetic Power steering fluid
2 Gallons of OAT, orange coolant, also called DexCool
1 Bottle of Lucas Power Steering additive
1 Bottle of Lucas Transmission additive
1 Can of Spray Carb. Spray
1 Can Of Brake cleaner
8 Spark Plugs, I use Bosch Platinum Plus 4's
1 Set of Magnacor 8mm plug wires
1 Serpentine belt
2 Bottles of SeaFoam gas additive
1 T/Stat
1 bottle of WaterWetter or Purple Ice
Hoses and belts, as necessary

60,000 Mile Service or Major Service for High Mileage Used Vehicle just purchased

Bleed the brakes
Flush and change the power steering fluid adding one bottle of additive
Service the tranny adding one bottle of additive
Change the coolant and t/stat
Do an engine flush before changing the oil
Do an induction cleaning
Clean the throttle body
Add fuel additive to full gas tank
Change both of the diffs fluid
Change the t/case oil
Replace the plugs and wires
Replace the air filter
Lube all the drive shaft grease fitting including the 2 slip shafts
Do full inspection of brakes, hoses, bushings etc.

Hopefully I didn't leave anything out.

[DiscoDream2]

Originally Posted by Disco Mike

"= Random Misfire and a Chassis Acceleration Sensor Signal Low." There is no such code for a Rover.
He has to deal with 3 misfiring cylinder and 2 emission misfires only.

Sry wrong chart/copy paste (kia oops)...my bad. Still, wires and plugs and everything else on mikes list...ok no more post's before second cup of coffee..

[Dainon's D2]

I'm looking at doing just plugs, wires, & a fuel filter. Will I need to remove the plenum? Or can I do the plugs & wires w/out removing the plenum? Also, is the fuel filter inline or in the gas tank? Thanks for all your help, guys!!!

[rmuller]

Originally Posted by Dainon's D2

I'm looking at doing just plugs, wires, & a fuel filter. Will I need to remove the plenum? Or can I do the plugs & wires w/out removing the plenum?

depends on how small your hands are.

Some people are able to lay on top of the engine and reach them.... i'd recommend taking your hood off to give you extra access.

[DiscoDream2]

It can be done either way removal or non removal. Just wires and plugs no need for removal. Works slow, one wire at a time take it off, measure / compare size, re-install. Follow the previous wires path, make sure boots are securely in place.

Get the good ones, no cheapies from the Zone....I did and wasted money and time thus the three times i had to do it.

Here are a couple tools that may help, the screwdriver is NOT my idea but I have used it.




or this one to help reach back there.

[nasa25]

there is no fuel filter to replace in the D2's

[Burncycle]

You should try the wires yourself. Here is a good read.

Replace Wires Without Removing IM - Land Rover Forums - Land Rover Enthusiast Forum

Just do your homework before you start and you can get the wires done in less than an hour like i did.

[DiscoDream2]

Originally Posted by Burncycle

You should try the wires yourself. Here is a good read.

Replace Wires Without Removing IM - Land Rover Forums - Land Rover Enthusiast Forum

Just do your homework before you start and you can get the wires done in less than an hour like i did.

This is a good read, I couldn't find it earlier...SAI seems to get in the way a little..

[Dainon's D2]

I just ordered the 8mm wires at Kingsborne Wire Werks Inc - Spark plug wires, Automotive, RV, Motorcycle, Marine, Racing, Industry but where do I find good spark plugs?