Question about 2003 Toyota Corolla

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Vehicle troubleshooting diagnosis

Iam in business of vehicle repairs and maintenance.I wish to improve on the
the efficiency of my work by diagnosing the causes of breakdown/ faults faster.Is it possible for me get computor program that can assist me?
And at what cost with training inclusive?

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  • edwinkalipen Aug 29, 2008

    i wish to have some technical data on engine repairing manuals but i dont sim to find any on this sit

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Hey

yes you can!! i have found a very easy to understand bosch diagnosis computer software program!! hope you dont mind me giving you a link as it will show you exactly what you will be getting with pictures etc..
http://www.boschautoparts.co.uk/esDiag1.asp?c=2&d=2

if this doesnt suit you let me know

Damien:)

Posted on Aug 22, 2008

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6ya6ya
  • 2 Answers

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

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Posted on Jan 02, 2017

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2002 ford f150 4.6 motor when I drive it will not shift gears on its own it will shift if I manually do it my self I have no idea what's going here


Diagnostic starting point .
SECTION 307-01B: Automatic Transmission - 4R70W 2002 F-150 Workshop Manual DIAGNOSIS AND TESTING Procedure revision date: 06/20/2001 Diagnostic Strategy Troubleshooting an electronically controlled automatic transmission is simplified by using the proven method of diagnosis. One of the most important things to remember is that there is a definite procedure to follow.
NOTE: Do not take any short cuts or assume that critical checks or adjustments have already been made.
Follow the procedures as written to avoid missing critical components or steps.
To properly diagnose a concern have the following publications available:
  • Transmission Reference Manual.
  • Powertrain Control/Emissions Diagnosis (PC/ED) manual.
  • TSBs and OASIS Messages.
  • Wiring Diagram.
These publications provide the information required when diagnosing transmission concerns.
Use the Diagnostic Flow Chart as a guide and follow the steps as indicated.
Preliminary Inspection
  • Know and understand the customer's concern.
  • Verify the concern by operating the vehicle.
  • Check the fluid levels and condition.
  • Check for non-factory add-on items.
  • Check shift linkages for proper adjustment.
  • Check TSBs and OASIS messages regarding the concern.
Diagnostics
  • Carry out on-board diagnostic procedures key on engine off (KOEO) and key on engine running (KOER).
  • Record all diagnostic trouble codes (DTCs).
  • Repair all non-transmission codes first.
  • Repair all transmission codes second.
  • Erase all continuous codes and attempt to repeat them.
  • Repair all continuous codes.
  • If only pass codes are obtained, refer to Diagnosis By Symptom for further information and diagnosis.
Follow the diagnostic sequence to diagnose and repair the concern the first time.
It's best if you take your vehicle to a qualified repair shop if your not familiar with any of thing's listed above .Need a scan tool to check for DTC'S .
Your

Jun 11, 2016 | Ford Cars & Trucks

Tip

Improve Your Car?s Fuel Efficiency


Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} Improve Your Car’s Fuel Efficiency
Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} It’s really exasperating to see fuel prices skyrocketing, right? We can only feel helpless in the face of recurring and economy-driven price fluctuations. Seeking measures to improve fuel economy is the only way to combat rising fuel prices. Do not disregard these simple guidelines; each little step can really start adding up to significant savings to your budget.

Check Tyre Pressure

Keeping the tyres well inflated is one of the simplest things you can do to help improve your car’s fuel efficiency. You can improve the mileage by about 3.3 percent if you keep your tyres inflated properly, according to the DOE.

Lighten Your Load

Empty out your boot of unnecessary items. For every extra 45 kg you carry, your fuel efficiency can drop by 1-2% in a typical vehicle.

S-L-O-W D-O-W-N

The faster you drive, the more fuel you use. Driving within the speed limit recommended by the manufacturer helps save fuel. Driving just 5mph over the speed limit can affect fuel economy by up to 23%. Likewise, quick acceleration consumes too much fuel; accelerate slowly and gradually.

Do Fuel Quality/Types/Additives Help Mileage?

Petrol pump attendants often try to convince you to go for ‘Speed petrol’ or ‘X-tra Mile diesel’. But this need not necessarily help improve your vehicle’s fuel efficiency. Always use the grade recommended for the vehicle by the manufacturer. Higher octane fuel may not only be a waste of money but may harm the vehicle, as well. However sticking to one brand of fuel is always good for the engine. Know more about Octane Ratings

Tune Your Engine

A well-tuned engine can improve fuel economy by up to 4%. So change your oil and follow your car manufacturer’s recommendation on servicing.

Clean the Air Filters Regularly

Air filters keep impurities from damaging your engine. Replacing a clogged air filter can improve fuel economy by as much as 10%.

Keep the Windows Closed

Driving with your windows open considerably reduces mileage, far more than keeping the AC on while driving along highways. So preferably keep the windows closed and the AC on if you want to keep cool. Of course the air-conditioning decreases fuel efficiency considerably, so use it judiciously. Windows down or A/C on — which is more fuel-efficient?

Clean Spark Plugs

Ensure your spark plugs are in good condition. Renew the plugs and wires at intervals specified by the manufacturer. This will keep all cylinders firing properly resulting in higher efficiency.

Don’t Be a Clutch-Driver

Never keep your foot on the clutch while driving. When you do this, pressure is being placed on your clutch, and it not only reduces mileage, but also wears out the clutch plate, replacing which is not cheap.

Keep the Car in Showroom Condition

It’s always prudent to keep the car in the showroom condition. Remember that any modification to the car, such as broad tyres, diffusers etc., will adversely affect the mileage.

on Sep 11, 2010 | Honda Accord Cars & Trucks

1 Answer

2000 Ford F250 SD xlt 4 WD 5.4 liter 4 speed A/T The over drive button was flashing So I purchased the gear shift lever w/button After changing out I'm having delayed and slipping in A/TransHelp Pleas


SECTION 307-01: Automatic Transaxle/Transmission 2000 F-Super Duty 250-550/Excursion/F-53 Motorhome Chassis Workshop Manual DIAGNOSIS AND TESTING Procedure revision date: 06/21/1999 Diagnostic Strategy NOTE: Do not take short cuts or assume that critical checks or adjustments have already been made.
Troubleshooting an electronically controlled automatic transmission is simplified by using the proven method of diagnosis. One of the most important things to remember is that there is a definite procedure to follow.
Follow the procedures as written to avoid missing critical components or steps.
To diagnose a concern correctly, the technician should have the following publications available:
  • Transmission reference manual.
  • Powertrain Control/Emissions Diagnosis (PC/ED) manual.
  • OASIS messages.
  • Technical Service Bulletins (TSBs).
  • Wiring Diagram.
These publications provide the information required when diagnosing transmission concerns.
Using the Diagnostic Flowchart as a guide, follow the steps as indicated.
Preliminary Inspection
  • Know and understand the customer's concern.
  • Check the fluid level and condition.
  • Verify the concern by operating the vehicle.
  • Check for non-factory add-on items.
  • Check shift linkages for correct adjustment.
  • Check TSBs and OASIS messages for the concern.
Diagnostics
  • Vehicles that have power take-off capability will not have on board diagnostic capability when the power take off is in operation.
  • Carry out on-board diagnostic procedures key on/engine off (KOEO) and key on/engine running (KOER).
  • Record all diagnostic trouble codes (DTCs).
  • Repair all non-transmission codes first.
  • Repair all transmission codes second.
  • Erase all continuous codes and attempt to repeat them.
  • Repair all continuous codes which reappear.
  • If only pass codes are obtained, refer to Diagnosis By Symptom in this section for further information and diagnosis.
Follow the diagnostic sequence to diagnose and repair the concern the first time.
Transmission Control Switch (TCS), Transmission Control Indicator Lamp (TCIL)
The transmission control switch (TCS) is a momentary control switch. When the switch is pressed, a signal is sent to the powertrain control module (PCM) to allow automatic shifts from first through fourth gears or first through third gears only. The PCM energizes the transmission control indicator lamp (TCIL) when the switch is off. The TCIL indicates OVERDRIVE cancel mode activated (lamp on) and electronic pressure control (EPC) circuit shorted (lamp flashing) or monitored sensor failure.
Your best bet is to take your vehicle to a qualified transmission repair shop !
Your

Jun 06, 2016 | Ford Cars & Trucks

2 Answers

P0420


Hi there:DTC P0420 - Catalyst System Efficiency Below Threshold (Bank 1)



The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate. The downstream O2 sensor reading should be fairly steady. Typically the P0420 code triggers the Check Engine Light if the readings of the two sensors are similar.



This is indicative of (among other things) a converter that is not working as efficiently as it should be (according to specs). It is part of the vehicle emissions system.


A code P0420 may mean that one or more of the following has happened:



Leaded fuel was used where unleaded was called for
A damaged or failed oxygen sensor (HO2S)
Downstream oxygen sensor (HO2S) wiring damaged or connected improperly
The engine coolant temperature sensor is not working properly
Damaged or leaking exhaust manifold / catalytic converter / muffler / exhaust pipe
******** spark timing
The oxygen sensors in front and behind the converter are reporting too similar of readings
Leaking fuel injector or high fuel pressure
Cylinder misfire
Oil contamination


Possible Solutions: some suggested steps for troubleshooting a P0420 error code include:


Check for exhaust leaks at the manifold, pipes, catalytic converter. Repair as required.
Use a scope to diagnose the oxygen sensor operation (Tip: The oxygen sensor in front of the catalytic converter normally has a fluctuating waveform. The waveform of the sensor behind the converter should be more steady).
Inspect the downstream heated oxygen sensor (HO2S), replace if necessary
Replace the catalytic converter
Overall probably the biggest mistake vehicles owners make when they have a P0420 code is to simply replace an oxygen sensor (H02S). It is important to do proper diagnosis so you're not wasting money replacing parts unnecessarily.


We strongly recommend that if you need to replace the catalytic converter that you replace it with an OEM unit. Second choice would be a high-quality replacement part. There are many stories in our forums where folks replaced the cat with a cheaper aftermarket one only to have the code return shortly thereafter.


One thing to note is that many vehicle manufacturers offer a longer warranty on emissions-related parts. So if you have a newer car but it's out of it's bumper-to-bumper warranty, there still may be warranty on this type of problem. Many manufacturers give a five year, unlimited mileage warranty on these items. It's worth checking into.


Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Aug 22, 2012 | Chevrolet Cars & Trucks

1 Answer

Check engine with code p0420


Generally, this code is from a failed converter. Most exhaust or diagnostic shops can perform a converter back pressure test to confirm if the converter is failing.


DTC P0420 - Catalyst System Efficiency Below Threshold (Bank 1)
The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate. The downstream O2 sensor reading should be fairly steady. Typically the P0420 code triggers the Check Engine Light if the readings of the two sensors are similar.


This is indicative of (among other things) a converter that is not working as efficiently as it should be (according to specs). It is part of the vehicle emissions system.

Some suggested steps for troubleshooting a P0420 error code include:

  • Check for exhaust leaks at the manifold, pipes, catalytic converter. Repair as required.
  • Use a scope to diagnose the oxygen sensor operation (Tip: The oxygen sensor in front of the catalytic converter normally has a fluctuating waveform. The waveform of the sensor behind the converter should be more steady).
  • Inspect the downstream heated oxygen sensor (HO2S), replace if necessary
  • Replace the catalytic converter

Overall probably the biggest mistake vehicles owners make when they have a P0420 code is to simply replace an oxygen sensor (H02S). It is important to do proper diagnosis so you're not wasting money replacing parts unnecessarily.

We strongly recommend that if you need to replace the catalytic converter that you replace it with an OEM unit. Second choice would be a high-quality replacement part. There are many stories in our forums where folks replaced the cat with a cheaper aftermarket one only to have the code return shortly thereafter.

One thing to note is that many vehicle manufacturers offer a longer warranty on emissions-related parts. So if you have a newer car but it's out of it's bumper-to-bumper warranty, there still may be warranty on this type of problem. Many manufacturers give a five year, unlimited mileage warranty on these items. It's worth checking into.


Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Jun 22, 2012 | 2002 Chevrolet Impala

1 Answer

How to troubleshoot 2008 xterra radio issues


As a professional automotive repair technician, I would go about diagnosing your radio issue in the same mannner that I would diagnose any other electrical component in your vehicle.

The FIRST STEP in ANY vehicle diagnosis is to perform a function test and verify the customer complaint. (Check the operation of the system to determine what is functioning correctly and what is not).
Since this post has no customer complaint, we cannot get past step one.

May 06, 2012 | 2008 Nissan Xterra

1 Answer

Hyundai santa fe 2001 cluster and rear lights not working


Your problem is electrical - which you already know. I'm sorry there's no QUICK FIX for it. It requires diagnosis and trouble shooting (I imagine you've checked the fuses and bulbs?).

You've stated the problem, but have not offered additional diagnosis/troubleshooting steps/procedures undertaken. The only recourse I have is to examine the vehicle myself... which is unrealistic here. There is NO QUICK FIX for the problem you describe. It must be properly diagnosed/troubleshooted to determine the CAUSE.

Mar 22, 2011 | Hyundai Santa Fe Cars & Trucks

1 Answer

What are the better extractor, exhaust systems for a 1.6 ltr manual accent and is it worth changing air filter to an aftermarket set up?


I never recommend aftermarket modifications to any vehicle. Aftermarket air induction systems - especially those with the "permanent" air filters tend to wreak havoc with Mass Airflow sensors and Intake Air Temperature Sensors. Aftermarket exhaust systems can cause problems with exhaust flow that can mess with the calibration of Oxygen Sensors. These things all lead to severe Catalytic Converter damage. When these vehicle fail to run properly, they are extremely hard, if not impossible, to properly diagnose because the troubleshooting charts for the vehicle no longer apply like they should. (It's hard enough trying to get good accurate information for the FACTORY set-up.)
These systems are set up by the vehicle manufacturer for the best performance and the best efficiency with the least amount of required maintenance.
My recommendation is that if your car does not have enough power for your needs, trade it in for a car with a bigger engine.
- Just my opinion based on 36+ years of experience. Take it as you will.

Jan 24, 2011 | 2001 Hyundai Accent

1 Answer

Air conditioner fuse keeps blowing and the overdrive light flashes, trans goes into safe mode 2nd gear and will not shift. thought the trans was bad ...had it rebuilt but it is still doing it. replaced the...


The vehicle is only 5 years old.
A rebuilt trans,computer,etc

Stop everything. Find a repair shop that works on a lot of ford vehicles.
You could go to a dealer,but I'am not seeing that work for many people.

That shop must have access to diagnostic charts for your specific vehicle.
Usually they pay big bucks for internet tech data, as well as a hot line.

You may have no idea what I am referring to.
Iam talking about a shop that specializes, in the latest vehicles,and the most technical diagnostic troubleshooting.
Those people are very hard to find, and very scarce and tallented individuals. There also, are businesses in most states, that travel to shops and work on issues, such as yours,that is far beyond a dealership to figure out.

Sep 20, 2010 | 2005 Ford Crown Victoria

1 Answer

Intermittent wipers don't work consistantly. High & low work fine


Non-Trouble Code Procedures

WARNING: TO AVOID PERSONAL INJURY OR DEATH, ON VEHICLES EQUIPPED WITH AIRBAGS, DISABLE THE SUPPLEMENTAL RESTRAINT SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, AIRBAG, SEAT BELT TENSIONER, IMPACT SENSOR, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE SUPPLEMENTAL RESTRAINT SYSTEM. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT.

If the wiper motor operates, but the wipers do not move on the windshield, replace the faulty wiper module. If the washer pump/motor operates, but no washer fluid is dispensed on the glass; or, if the wipers operate, but chatter, lift, or do not clear the glass, clean and inspect the wiper and washer system components as required.

The hard wired wiper and washer system circuits and components may be diagnosed and tested using conventional diagnostic tools and methods. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness connectors, splices and grounds.

However, conventional diagnostic methods may not prove conclusive in the diagnosis of the ElectroMechanical Instrument Cluster (EMIC), the Totally Integrated Power Module (TIPM), the Controller Area Network (CAN) data bus, or the electronic message inputs or outputs used to provide wiper and washer system service or many of the electronic features of the wiper and washer systems. The most reliable, efficient, and accurate means to diagnose the EMIC, the TIPM, the CAN data bus and the electronic message inputs and outputs for the wiper and washer system requires the use of a diagnostic scan tool.

Dec 28, 2008 | 2005 Dodge Ram 2500 Truck

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