Check Engine Light

I believe they are 3.10's. Tave your jeeps vin number to a jeep dealer ship they can print every thing that came w/ your wrangler,your jeep probly came w/ 3.08 gears, if you are looking to change your gearing you may be wastin your time because you should have a Dana 30 and Dana 35 which are the weakest axles that came w/ the jeeps, go to salvage yards an find a pair of Dana 44's. You should be able to find these for the same price as new gears and labor, and you should be able to do the work your self. chek out www.jpmagazine.com

It comes on when the engine computer detects a malfunction and sets a code.

Have vehicle scanned to determine the problem

p1039 for a 1999 ford ranger indicates a camshaft position sensor fault. it could be the sensor, wiring, or the PCM. must be properly diagnosed to determine the real fault.

Take your car to a repair shop and have them diagnosis the problem. If you read and paid attention to the first sentence it will save you money. Yes, some parts houses will tell you what the code is to sell you parts but that does NOT mean that is what is needed to repair the problem. It could be as simple as a vacuum leak. The price of the diagnostics is worth getting it right the first time.

Emissons problem

It means that the catalytic converter is not performing to specifications and should be replaced.

Many things could cause your service engine soon light to come on. Every time you start the engine, the computer does a self-diagnostic test. If it finds any faults, it will illuminate the light. I would recomend you find an OBD ( On Board Diagnostic) tester and read the code. Autozone will perform this service for free. They will read the code and tell you what is causing your light to come on.

P0700 is transmission code present. The PCM sets this code when there is a code in the TCM. You will need to have the TCM checked to know it's code and possible causes.

An engine code reader tool is needed to read a vehicle's engine trouble codes. Most auto parts store have them available and they can check the code for you by plugging it into your vehicle's OBD port (found under the driver's side of the dashboard). The displayed code(s) can then be looked up on a table of descriptions or found online to tell you what is wrong with the vehicle.

The check engine light (service engine soon) comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, the problem is in the emissions or something that is affecting the effectiveness of the emissions, but other causes can trigger the light to come on, too. To determine the cause, the vehicle will need to be taken to AutoZone or a shop that has an OBD2 scanner, or for 1995 and earlier models, an OBD1 scanner, While a scanner will not give you the magic answer, it will give you a code that narrows down the problem area.

Hold the reset button

Smaller tires should not cause the check engine light to come on. Smaller tires will cause the speedometer to be off.

The check engine light (service engine soon) comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, the problem is in the emissions or something that is affecting the effectiveness of the emissions, but other causes can trigger the light to come on, too. To determine the cause, the vehicle will need to be taken to a parts store or a shop that has an OBD2 scanner, or for 1995 and earlier models, an OBD1 scanner, While a scanner will not give you the magic answer, it will give you a code that narrows down the problem area.

Could be as simple as a loose or bad fuel cap.

The check engine light (service engine soon) comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, the problem is in the emissions or something that is affecting the effectiveness of the emissions, but other causes can trigger the light to come on, too. To determine the cause, the vehicle will need to be taken to AutoZone or a shop that has an OBD2 scanner, or for 1995 and earlier models, an OBD1 scanner, While a scanner will not give you the magic answer, it will give you a code that narrows down the problem area.

Bank one, sensor one is screwed into the exhaust pipe before the catalytic converter.

I was driving on the highway and the car just stalled and wouldn't restart. Originally it showed a code for cam position sensor. I changed the cam pos sensor. It still wont start. When I try to start it it cranks much faster than normal. Now it shows a code for a MAP sensor. I changed that...nothing. Any ideas.

That requires an OBDII engine scanner.

The check engine light (service engine soon) comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, the problem is in the emissions or something that is affecting the effectiveness of the emissions, but other causes can trigger the light to come on, too. To determine the cause, the vehicle will need to be taken to a parts store or a shop that has an OBD2 scanner, or for 1995 and earlier models, an OBD1 scanner, While a scanner will not give you the magic answer, it will give you a code that narrows down the problem area.

Turn ignition off hold the button below the speedo keep finger on button turn ignition let go and turn the CLOCK button to the right until it clears

On my vehicle (Saturn) it indicates that maintenance is required (if the light stays on).

First make sure your Odometer is set to Trip A. Turn the key off, old down the odometer button, turn the key to on. You will see dashes count down, then flash 000000. You're done! No tools required

If there's a temp sender for the ECU change it Firstly make sure nothing is causing overheating like coolant and water levels. It is common for the temperature sensor to be faulty and not turning on the cooling systems in time to prevent overheating. Be careful in diagnisis because the corsa's sensor will have to be located from underneath and might require a mechanic.

Yes , for many reasons. Bad/dirty electrical ground circuit will cause different sensor(s) to report incorrect information back to the computer & illuminate check engine lamp. An over or undercharging alternator will cause check engine lamp to illuminate. Easiest way to repair is to determine what computer code is stored in computer as a result of the lamp being on. Once the code has been determined , then the appropriate diagnostics can be started.