isuzu trooper fault codes p0401&p1441

dsimpson1306
0

Asked by dsimpson1306 Apr 16, 2011 at 10:34 PM about the 1999 Isuzu Trooper 4 Dr S 4WD SUV

Question type: Maintenance & Repair

Hello, I have a 99 Isuzu trooper 3.5l v6. I have to say that I love this vehicle, but since I
bought it 2 months ago it has two codes showing p0401(egr) and p1441(evap). The dealer
replaced the egr valve and evap canister apparently. It was good for a couple of days then
the light came back on. I then replaced the rear muffler as it had a leak. The light then
went straight off. Again two days later it came back on. This thing is messing with me! If
there's any  experts that can help I would really appreciate that. Thank you, dave.

3 Answers

Troy Nadon
5

try putting a gas cap on it it is one of the most common and cheapest fix for the small evap leak, if the light stays on rec a smoke test at a shop.

N8dogg
315

The 401 code is the most common code and most often refers to the throttle position sensor( a fancy way of saying gas pedal). I have a 2000 Trooper and I'm assuming yours is also an automatic which means it has an electronic gas pedal. While this makes for really smooth acceleration it makes the check engine light come on needlessly. Now be advised there are other posibilities for the 401 code popping up but the throttle position sensor is the most most likely culprit. You can buy a new one if you want to make it stop lighting up your dash board but mine has been lighting up for more than three years now with no adverse performance. I have my own scanner permanently mounted to my car to monitor fuel mileage and other things and every time I go to check it it's almost always that one stupid code. By the way I hope it didn't cost too much for that new egr valve because they don't go bad, they only need to be taken off and cleaned. If you want to hold on to this vehicle do three things-1 check the oil every week if not sooner ( the early 3.5 l engines have consumption problems) 2 go to helm.manuals.com and get the factory manual for this vehicle 3 get a code scanner- you can get a scan guage II that sits on the dash like I have and monitors the fuel mileage if you want to save money. If you have any mechanical abilities whatsoever it would be wise to get the factory manual and learn to start working on this thing yourself. Like I said that egr valve code pops up on me every 8 months or so. What do I do, bust out a new gasket and a can of brakecleen. Problem solved and I didn't have to drop $150 on a new egr.

mfishaji
0

I agree! I have to check my oil on a weekly basis or sooner!! I also clean my egr valve with b12 chemtool and I bought a gasket maker set so I wouldnt have to keep buying gaskets!! Someone had told me that my egr system was clogged up with carb!! I will prob get that checked in a few days but until then I keep doing this process to keep my trooper running on the road! I also had a problem with the airconditioner, but thats a whole new problem.

Your Answer

Add photo

Related Questions

  • strong fuel smell 6 answers

    Hi guys... hope you can help unstump the dummy. 2000 Isuzu Rodeo v6 engine automatic.. for several weeks we can smell a very strong gas odor when the car is running even in the car following behind ...

    2000 Isuzu Rodeo LS

    -

    Maintenance & Repair

  • Check engine light keeps coming on (p0401). 1 answer

    Replaced the engine in my 1999 Ford Expedition. Check Engine light keeps coming on. Replaced the EGR valve, sensor and solenoid...car runs fine...but the check engine light keeps coming on with ...

    1999 Ford Expedition 4 Dr XLT 4WD SUV

    -

    Maintenance & Repair

  • 2.2 running bad and throwing codes 2 answers

    have a 1998 camry with the 2.2 in it. It has had the code 0300 on for some time now (EGR FLOW) and every now and then for the past few months it would run bad when i first fired it up and accelerate...

    1998 Toyota Camry CE

    -

    Maintenance & Repair

  • Check engine light still on 2 answers

    Code P0401 have put in new EGR and both Solenoids replaced checked hoses and check egine light still coming on .Need help!

    2003 Hyundai Santa Fe GL

    -

    Maintenance & Repair

  • What is code p0401 on 2002 lincoln ls v6 engine 1 answer

    General

Trooper
Looking for a Used Trooper in your area?
CarGurus has 147 nationwide Trooper listings starting at $2,995.
ZIP:

Search Isuzu Trooper Questions

Isuzu Trooper Experts

#1 N8dogg
N8dogg
Reputation 230
#2 tennisshoes
tennisshoes
Reputation 130
#3 tenspeed
tenspeed
Reputation 90
View All

Related Models For Sale

Used Isuzu Rodeo"
5 Great Deals out of 459 listings starting at $1,699
Used Mitsubishi Montero"
7 Great Deals out of 207 listings starting at $2,295
Used Toyota 4Runner"
352 Great Deals out of 11,704 listings starting at $2,500
Used Jeep Cherokee"
80 Great Deals out of 40,865 listings starting at $1,890
Used Nissan Pathfinder"
354 Great Deals out of 19,857 listings starting at $2,495
Used Nissan Xterra"
240 Great Deals out of 6,493 listings starting at $1,995
Used Jeep Wrangler"
1,178 Great Deals out of 49,385 listings starting at $1,800
Used Ford Explorer"
942 Great Deals out of 51,572 listings starting at $1,450
Used Toyota RAV4"
668 Great Deals out of 36,351 listings starting at $1,950
Used Land Rover Range Rover"
133 Great Deals out of 2,457 listings starting at $2,900
Used Isuzu Amigo"
22 listings
Used Jeep Grand Cherokee"
1,115 Great Deals out of 56,485 listings starting at $900