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Related Mitsubishi Questions
2001 mitsubishi montero sport 3.5 ,first came with the
2001 mitsubishi montero sport 3.5 ,first came with the trouble code is po125 and p1135.About three days after repair the light come back on and i still got same problem tempurature gauge some time go … read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
I have a 2001 Montero limited full size. I've had a code for
I have a 2001 Montero limited full size. I've had a code for the cat for awhile and it needs replacing. Just yesterday two new codes. P0170 and P0173. The long term fuel trims are maxed at 12.5 for bo… read more
David Craig
David Craig
OWNER/MECHANIC
Associates
11,464 satisfied customers
I have a pending po431 code in a 2001 eclipse spyder. I know
I have a pending po431 code in a 2001 eclipse spyder. I know the cat may be bad buy is like to make sure it isn't something else first. Suggestions?… read more
Craig Manning
Craig Manning
GM Certified Technician
High School or GED
157 satisfied customers
I have a pending po431 code on this 2001 eclipse spider. At
I have a pending po431 code on this 2001 eclipse spider. At idle both downstream o2 sensors are fairly steady but while driving bank 2 is switching a little erratically. I feel like this is not the co… read more
Juan Crespo
Juan Crespo
Sr. Technician
Bachelor's Degree
1,262 satisfied customers
Answers from Two Experts requested: Mitsubishi Montero Sport XLS: I ha
I have a 2000 Montero Sport XLS, 3.0L, two wheel drive, automatic with 240K miles. I runs great. BUT It throws a code 421. I reset the code and it returns after 160 to 170 miles (mixed freeway and cit… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
Answers from Two Experts requested: Mitsubishi Montero Sport XLS: I ha
I have a 2000 Montero Sport XLS, 3.0L, two wheel drive, automatic with 240K miles. I runs great. BUT It throws a code 421. I reset the code and it returns after 160 to 170 miles (mixed freeway and cit… read more
Jerry
Jerry
Service consultant
Vocational, Technical or Trade Scho
13,108 satisfied customers
Mitsubishi Montero: I have a 1997 Mitsubishi Montero (not Sport).
I have a 1997 Mitsubishi Montero (not Sport). It sat with a dead battery for a few months until I bought a new battery and had the alternator replaced, and now it runs well. However, my mechanic tells… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
Mitsubishi Endeavor XLS: Hi Doug... I have a 2005 Endeavor
Hi Doug... I have a 2005 Endeavor which just the other day started putting out a P0431 code. I have read your response to this question and have a couple of follow-ups for you. Just for clarity's sake… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
Mitsubishi Montero Sport: Diagnostic code P0431, P0421 on a
Diagnostic code P0431, P0421 on a 1999 Montero Sport 3.5 V6. Catalytic Converters or 02 sensors? If Cat is it a DIY job with direct fits or better off taking it to a shop.… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
service engine light on, codes- po154, po421 & po174 is a pending code, I pulled the c
service engine light on, codes- po154, po421 & po174 is a pending code, I pulled the code info but what exactly do these codes mean, (PO154) O2 sensor CKT no activity bank 2 sensor (PO421) warm up cat… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
Mitsubishi Eclipse: I have a 2001 Eclipse Spyder Gt. I replaced
I have a 2001 Eclipse Spyder Gt. I replaced the O2 sensor on bank 1 because of a P0135 code. That code has cleared and I now have a P0431 code. I notice that I have a loose wire coming from the wire b… read more
Tim Mohr
Tim Mohr
ase master
Master's Degree
230 satisfied customers
2000 Montero Sport LS: wheel drive..o2 sensor..Thanks,randall
I have a 2000 Montero Sport LSXXXXX Need location of bank 1 O2 sensor and method of access. Thanks, Randall… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
montero sport: o2 sensor circuit bank..bank 2 sensor..jay
on a 03 montero sport where is o2 sensor circuit bank 2 sensor 2 located? po156 thanks, Jay… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
Mitsubishi Galant GS The code PO421 Warm Up Catalyst Efficiency
The code PO421 Warm Up Catalyst Efficiency Below Threshold (Bank 1)(5). What kind of repairs am I looking at?… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
Service engine light came..code reader..oxygen sensor..converter
Service engine light came on at 57,000 miles hooked up a code reader and got error code PO 421 warmup catalyst effeciency below threashold bank 1. did a google search and got possible erg valve or sel… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
Lancer: Mitsubishi..lost power..km..me rev beyond 2500-3000 rpm
Hello there, I've got a Mitsubishi 2006 4G69 2.4L lancer. Very recently while starting for work early morning, the car suddenly lost power (did not switch off) after a couple of km's and would not let… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
I have a 02 Lancer have code PO421 the rear o2 sensor was not
I have a 02 Lancer have code PO421 the rear o2 sensor was not working correctly so i replaced it. Cleared code and about three days later back on same code. ran through some test i got online and look… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
I need the radio code for a 1997 montero sport. The v.i.
I need the radio code for a 1997 montero sport. The v.i.n. is JA4MT41P3VP001342 and serial number is XXXXX I also have a c.e.l. with fault code p0173 fuel trim malfunction bank 2.… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
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Meet the Experts:

Doug

Doug

ASE Certified Technician

8,677 satisfied customers

Mitsubishi employed and Factory trained ASE certified technician

Chris (aka- Moose)

Chris (aka- Moose)

Technician

373 satisfied customers

24 years of experience diagnosing & repairing

George H.

George H.

ASE Certified Technician

321 satisfied customers

ASE Master tech 15+ years

Tim Mohr

Tim Mohr

ase master

230 satisfied customers

30 yrs foriegn and domestic, gas and diesel

Don - Mo Lurch

Don - Mo Lurch

Mitsubishi Mechanic

60 satisfied customers

16 years, Line Mechanic, Electronics trouble shooting, etc

AMD

AMD

Master Technician

48 satisfied customers

L1 Advanced Level Diagnostics Specialist

BigBob

BigBob

Service manager/Technician

46 satisfied customers

25 years in the auto repair business

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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