Question about 2004 Isuzu Rodeo

1 Answer

I AM HAVING A PROBLEM DIAGNOSING DTC CODE P1239 ON MY 2004 ISUZU PASSPORT. IT RUNS FINE FOR A FEW MINUTES< THEN THE CHECK ENGINE LIGHT AND REDUCED POWE RLIGHT COMES ON AND IT WONT GO OVER 30 MPH. IF I CLEAR THE CODE, IT COMES OUT OF IT. CAN YOU HELP PLEASE? THE ENGINE SEEMS TO HAVE A SLIGHT HESITATION BEFORE THE LIGHTS COME ON.

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 11,896 Answers

This would be
High fuel pressure system fault - Pressure high or low
1. check fuel quantity and quality
2. check for restriction
3. Open or short circuit condition
4. check repair resource for diagnostic procedure

May need a new fuel pump

Posted on Sep 29, 2010

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Reduced power light is on in my 2001 Izusu Rodeo Sport


the Reduce light, is not transmission , light correct?

what country are you in., ( asked 10000 times zero answers .well 3)
what engine,? we cant guess engines, here, and it seems to be just that, the engine issues.??? felt is real;. sure..

is the tranny stick or auto...... autos can slip and go to limp home mode just like engines do. so what transmission?

if in USA all scan tool made will scan an ISUZU. 1996+
so then you see DTC errors. and why its in limphome mode.
"your reduced power deal"
there is no other way,,,, besides, 1000 pages i type on how to test EFI with not scan tools.....I can do it. but refuse. to type that here..
as one famous poster said.
you want 50 years experience on 1 fixya page. :LOL

i wont say that, I say.
1: check all fuses.
2: make sure battery, voltage is 13.3 to 15v running, if not you have charge system failures, fix that first because EFI will not run on dead batteries, ever. (discharged for any reasons)
3:Scan it. do so and tell the DTC errors, im sure you have them.
4: or did you skip the 60,000 mile major tuneup, or never did one this decade,,,, wow, that be why , huh?

Mar 20, 2015 | 2001 Isuzu Rodeo

1 Answer

I have a 2008 Saturn outlook sometimes it will say traction control off and then says reduced engine power and it will viberate. You can shut it off and let it sit for a few minutes and start it back up...


What garage was it at ? Dealer reduced engine power means there is a problem with the electronic throttle control .this will shut off traction control off . Were there any DTC'S - diagnostic trouble codes read from the PCM - engine computer .
No crank REDUCED ENGINE POWER case study 13 GMC Acadia Part 1

Drive by Wire Function and diagnostics by Wells

Sep 16, 2017 | 2008 GMC Acadia

1 Answer

Check engine light, low engine power


You get a reduced power message ? Your vehicle has electronic throttle control or also known as drive by wire . Your gas pedal is electrically hooked to the PCM - engine computer . Has two position sensors inside as does the throttle body on the engine . Over time these position sensors wear an cause improper signals to the computer an the computer will put the vehicle into a limp mode . Most cases it will drive but only at about 20 mph . There are videos on youtube showing how this works , how to diagnose etc....
This P0449 is something different , has to do with the Evap. emissions .
DTC P0449 Evaporative Emission (EVAP) vent Solenoid Control Circuit . Planty of videos on youtube for GM trucks on this problem .
DTC P1516 Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance
The predicted throttle position (TP) is compared to the actual throttle position. The two values should be within a calibrated range of each other. Both the powertrain control module (PCM) and the throttle actuator control (TAC) module redundantly monitor the predicted and actual throttle position. DTC P1516 sets if the PCM detects an out of range condition between the predicted and the actual throttle position.
Look's like you have three different problems , Thought p1516 an p1258 were going to point to same electronic throttle problem .

P1258
Engine Coolant Overtemperature - Protection Mode Active
PCM
DTC P1258

Circuit Description
The powertrain control module (PCM) uses the ECT sensor to monitor the engine for an over temperature condition. This condition occurs when the coolant temperature is above 132°C (270°F). When an over temperature condition is present, DTC P1258 will set. The PCM will disable two groups of four cylinders by turning OFF the fuel injectors. By switching between the 2 groups of cylinders, the PCM is able to reduce the temperature of the coolant.

Check the engine cooling fans for proper operation.
Are the engine cooling fans operative? Have you ever had the thermostat changed ? Is the coolant full ?

Check out youtube videos ! Just type your codes into the search bar .

May 02, 2017 | 2006 Chevrolet Silverado 2500HD 2WD

1 Answer

I have 2006 fors focus 170000kms,1.6 duratec engine,couple of weeks before i experience suddennly when i start the car all needles go down.battery,oil,hand brake,abs warming lamps came up.ac stop working...


You will need the help of the Ford dealer on this as special equipment on the handas of a factory trained tech is required to diagnose these codes.

Jul 06, 2012 | 2006 Ford Focus

2 Answers

My isuzu is 1996 bighorn . problem is check engine light come on engine stopped . how to read DTC .


Not sure about DTC but Diesel Bighorns have a real problem with cooking their alternators which present with similar symptoms to what you have described.
Hope this helps.

Apr 14, 2010 | 1995 Isuzu Rodeo

1 Answer

Check engine light stays on. was diagnosed by


what are the timing marks for an Isuzu 250kb 1990

Jan 11, 2010 | 2004 Isuzu Rodeo

2 Answers

I got code p2176 I changed out the tps still got same problem did not have this problem with other engine just changed engine out now cant seem to get this code off causing the car to rough idle and low...


P2176=Throttle Actuator Control System - Idle Position Not Learned
Did you use all you old sensors,or is some of them from the new engine,I would swap out the IAC sensor or check for wires not hooked up.
If it can't relearn to idle the Idle air control might be different then your old one,but its not registering with the computer

Dec 17, 2009 | 2006 Chevrolet Impala

3 Answers

My 2002 Isuzu Troopers Check Engine light and Reduced power light came on and the engine ran very slow and sluggish. Checked the next day and check engine light came on and Reduced power light was no...


1295 simply indicates that you were in "get you home" mode. 1515 has to do with throttle position sensor fault. Since it was intermittant I'd check for chafed or broken wiring and loose connections

Nov 10, 2009 | 2002 Isuzu Trooper

1 Answer

2000 isuzu rodeo check engine light flashes when at or around 2500 rpm and up. engine runs smooth and no codes come up ? light goes out when rpm is reduced.


are you checking code with a small simple scanner this will not always work, a larger more sophisticated unit may find code or runs codes at over 2500 rpms when light comes on

Oct 30, 2009 | 2001 Isuzu Rodeo

Not finding what you are looking for?
2004 Isuzu Rodeo Logo

Related Topics:

986 people viewed this question

Ask a Question

Usually answered in minutes!

Top Isuzu Experts

yadayada
yadayada

Level 3 Expert

76164 Answers

Steve Hurc
Steve Hurc

Level 3 Expert

450 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Are you an Isuzu Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...