Anonymous
Unregistered
|
|
This is my first post since joining the group just a little while ago. I need to replace the spark plugs in my 2002 Montero 3.5L and the view from top of engine looked like some type of manual (hayes, chilton etc.) would be helpful in identifying what had to be removed to access plugs. No manuals were available in my town but I did want to tackle job this weekend. All of my searches on this forum turned up much discussion on what type of plugs to use. I'd like some direction on "how" to acccess plugs if anyone has a link, article or advice.
Thanks,
John
|
LRJ4x4
Web Wheeler
Reged: 12/17/01
Posts: 11717
Loc: Monterey, CA
|
|
Welcome,
I think the 02 take a special dealer only plug, Iridium ?
Your going to need a manual, from what I've heard it's a real PITA and you have to remove part of the intake. Don't quote me on that since I have never even touched a Gen III engine.
Bottom line is you need the manual because you need the torque values for the plugs and any other special procedures that are not obvious. Also if you need plugs don't you need a timing belt also?
--------------------
98 Montero with cold weather package
96 Toyota Land Cruiser, fully locked Mall Machine :-)
|
Anonymous
Unregistered
|
|
LRJ,
Thanks for your reply. Taking a better look at top of engine and finding the plugs, it's clear the intake needs to come off to remove the 3 plugs on drivers side. The passenger side is much easier, only requiring removal of air flow metering device.
I think I could do the entire job without a manual but do have value in having torque specs.., and was hoping to avoid nearly $200 in the cost of the manual. With so many things attached to the intake, I would have to at least take pictures and/or spend time labeling many parts before performing the surgery.
My dealer quoted me $600 for this plug job along with a few other minor fluid and misc. checks. Timing belt was replaced at 60K and I'm up to about 80K now. I'm getting a mild hesitation at idle (occasionally) and my dealer did recommend a set of plugs to cure it.
I'll definately buy my plugs from Mitsubishi to avoid doing this twice.
Looks like I'll wait a few days and see if a DIY link is available to perform this job before investing in a factory manual. That occasion skip doesn't seem to bother me now as much, especially since the temperature has just about reached 90F with about the same humity.
Regards,
John
|
Alex Kogan
Body Damage is Cool
Reged: 04/03/00
Posts: 1664
Loc: Portland, OR
|
|
Yes you have to take intack plenum off.
You can find all necessary info here: http://www.alldatadiy.com/index.html It's going to cost you $24 but totally worth it (it's about equal to cost of 2 plugs). It's basically the same data shop manual has. Actually my local dealer is using that rather than factory manual. Since Mitsu never provided them with one 
--------------------
92 SR, 285/75R16 Yoko MT ARB locker GAST compressor AirLift 1000 MM10500 Snorkel custom rear bumper
02 Montero LS died protecting the master
08 PowerWagon (stock!)
|
Anonymous
Unregistered
|
|
Alex,
Thanks for the link. I paid the $24 and was given access to diagrams of just about any part of my vehicle. Although not a step by step procedure for performing a certain job but it does provide good diagrams, part numbers, estimated time to complete job, torque values etc..
I feel comfortable that the info provided will give me what is needed to perform this job.
Again, thanks to all.
John
|
Winston
Rock Warrior
Reged: 02/01/05
Posts: 509
Loc: SF Bay Area
|
|
I would like to hear how it turns out. $600 from the dealer is outrageous. I believe you need a new intake plenum gasket. Also, while you are doing the work on the top end it would be a good time to clean the IAC/ISC motor. It is attached to the throttle body. Another source for plugs is;
www.sparkplugs.com
I think the Denso's listed are the same as the OEM mitsu plugs.
--------------------
'90 Montero XLS (Sold, sadly)
'95 Montero LS 160k
'03 Montero Limited 30k
|
Anonymous
Unregistered
|
|
Replacing the spark plugs on your O2 Montero does infact require the removal of the upper intake plenum. It can be a DIY'er type job depending on your skill level. I highly recommend using factory parts for this proceedure. Where you purchase the parts is up to you. I'd also recommend a set of factory ignition wires while you have it apart. The wires may be good now, but whether or not they will last to 120K (the next scheduled spark plug replacement) is less likely and having to remove the plenum again to replace them will be a waste of time. It is very similar to the replacing the spark plugs on the 6G72 3.0L 24v engine found on the Montero Sport. With that being said, i'll refer to to the DIY section at the Montero Sport Online Forum to which i moderate. There are nice photo illustrations and torque specs given.
Good Luck!
Joel, CA
|
Winston
Rock Warrior
Reged: 02/01/05
Posts: 509
Loc: SF Bay Area
|
|
The wires should be cheap. Aren't there only three sparkplug wires on that engine?
Also, do the OEM plugs even say Mitsu on them? I believe the spark plug model number is in the owners manual.
--------------------
'90 Montero XLS (Sold, sadly)
'95 Montero LS 160k
'03 Montero Limited 30k
Edited by Winston (08/29/05 05:39 PM)
|
Anonymous
Unregistered
|
|
There are 6 wires to this particular ignition system. The 94-96 3.5L DOHC engine had coilovers that had only 3 wires. The 6 wire set at the dealership will run close to $100 +/- .
Joel, CA
Edited by Joel,CA (08/29/05 05:45 PM)
|
MontyMcV
Trail Leader
Reged: 06/04/03
Posts: 7046
Loc: Cleve-burg OH USA
|
|
Quote:
...and was hoping to avoid nearly $200 in the cost of the manual.
Who did the timing belt? Why didn't they do the plugs then?
I have an FSM for 2003. it can't be that different for 2002. It's on CD in PDF.
--------------------
Big Truck 2: 00, 3.5, Endeavor, 94k, stock for now
Big Truck 1: 95, MT, >Gone<
Little Truck: 87, 2.6T I/C, MT, LSDs, Tonneau Top
Her Truck: 03, 3.8, 20th Anniv, 29k miles!
FSMs: MitsubishiLinks.com
|
Previous
Index
Next
Threaded
Edit
Reply
Quote
