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Re: service engine light
Therefore this is a HARD code that in your computer. I suggest that you take this vehicle to an Auto-Zone and have them put it on a code scanner. ITS DONE FOR FREE. They will be able to tell you what the codes mean and they can also rest this light. Good Luck
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Bit vague but I would start with the coolant. Is there any coolant in the system ? Might have caused an over-heat.
Which warning lights flashed apart from the battery ?
Check your water and oil (by "water" I mean coolant).
An over heating engine will cause all sorts of christmas tree lights to go beserk.
Fords have a problem if the battery runs flat or they are disconnected thus removing power from the onboard computer(s).
You may need to take the vehicle to a dealer service center to rectify the electronics problem for you and reset your computer.. To avoid this problem you need to connect up a second power source to the main leads to the battery while you are disconnecting those leads and replacing the battery so as to retain power to the onboard systems at all times.
In any event here is an item that may help you...........
The way to reset the oil light on your Trailblazer is.You first turn the key on but do not start the vehicle.Press the gas pedal 3 times all the way to the floor within 5 seconds.The change oil light will flash several time then go out.The oil life has been reset.Remember don`t start the vehicle just key on engine off.Hope this helps.Good luck.
It is not SUPPOSED to throttle for 3 or 4 attempts when you start the engine just after disconnecting the battery. Every time you disconnect the battery, your computer has to go through the idle learning process.
Also, every time you disconnect the battery, all you are accomplishing is to remove important information from the computer system that is needed to propery diagnose and repair your vehicle. You are also taking a big risk by doing this because repeatedly disconnecting and reconnecting the vehicle battery can damage many EXPENSIVE electronic components including the engine computer, body computer and the radio/stereo system.
My recommendation is to get the vehicle PROPERLY diagnosed and repaired so the light will stay off.
1. Before servicing the vehicle, refer to the Precautions section. 2. Remove or disconnect the following: Radiator upper support seal Air cleaner Engine under covers Starter wiring Starter
3. Installation is the reverse of removal. Torque the bolts to 28 ft. lbs. (37 Nm). Note that the bolts are 2 different lengths.
1. Before servicing the vehicle, refer to the Precautions section. 2. Remove or disconnect the following: Battery and tray. On models equipped with an air bag, work must NOT be started until at least 90 seconds have passed from the time that both the ignition switch is turned to the LOCK position and the negative cable is disconnected from the battery. Coolant reservoir Reservoir hose from the radiator Right side under cover Wiring clamp Wiring from the starter Starter
To install: 1. Install or connect the following: Starter Starter wiring and nut Starter connector and wire clamp Right side engine cover Radiator reservoir and hose Battery and tray
2. Check the cooling system and top off if necessary.
1. Before servicing the vehicle, refer to the Precautions section. 2. Remove or disconnect the following: Negative battery cable. On models equipped with an air bag, work must NOT be started until at least 90 seconds have passed from the time that both the ignition switch is turned to the LOCK position and the negative cable is disconnected from the battery Engine under covers Wiring from the starter terminals Starter mounting bolts Starter
To install: 1. Install or connect the following: Starter Starter wiring Engine under covers
1. Before servicing the vehicle, refer to the Precautions section. 2. Remove or disconnect the following: Negative battery cable Front engine undercover Starter wiring harness connectors Starter mounting bolts Starter motor
To install: 1. Install or connect the following: Starter motor. Tighten the bolts to 28 ft. lbs. (37 Nm). Starter wiring harness connectors Front engine undercover Negative battery cable
disconnect your negative battery terminal from your battery for thirty seconds.....make sure your sensor is plugged back in, then reconnect your battery terminal.That will do the trick unless you have another issue with your vehicle.I hope I could help..HAPPY HOLIDAYS!!!
Try this relearn procedure hopefully it will help Vehicles equipped with engine or transmission computers may require a relearn procedure after the vehicle battery is disconnected. Many vehicle computers memorize and store vehicle operation patterns for optimum driveability and performance. When the vehicle battery is disconnected, this memory is lost. The computer will use default data until new data from each key start is stored. As the computer memorizes vehicle operation for each new key start, driveability is restored. Vehicle computers may memorize vehicles operation patterns for 40 or more key starts. Customers often complain of driveability problems during the relearn stage because the vehicle acts differently then before being serviced. Depending on the type of vehicle and how it is equipped, the following complaints (driveability problems) may exist:
Harsh Or Poor Shift Quality Rough Or Unstable Idle Hesitation Or Stumble Rich Or Lean Running Poor Fuel Mileage
These symptoms and complaints should disappear after a number of drive cycles have been memorized. To reduce the possibility of complaints, after any service which requires battery power to be disconnected, vehicle should be road tested.
Ensure all components are connected. Ensure transmission fluid level is correct. Warm engine to normal operating temperature. If vehicle has been repaired, perform KOEO and Continuous Memory Code Self-Test and ensure fault codes are not present.
Computer Relearn Procedures
Idle Relearn Procedure
Place automatic transmission in Park or manual transmission in Neutral position. Ensure the emergency brake has been set and all accessories are turned off. Start engine and bring to normal operating temperature. Allow manual transmission vehicle to idle in Neutral for one minute. Allow automatic transmission to idle in Neutral for one minute and then to idle in Drive for one minute. Once initial relearn is complete, process will be completed during normal driving. Always complete the procedure before returning the vehicle to the customer.
Drive Cycle Test (AOD-E, AXOD & AXOD-E TRANSAXLES)
With transmission gear selector in Overdrive, moderately accelerate vehicle to 50 MPH for a minimum of 15 seconds. Transmission should be in 4th gear. While holding speed steady, lightly apply and release brake for about 5 seconds. Stop and park vehicle for a minimum of 20 seconds with transmission gear selector in Drive. Repeat procedure 5 times. Always complete the procedure before returning the vehicle to the customer.
Drive Cycle Test (E4OD)
With transmission gear selector in Drive, press Overdrive Cancel Switch (LED should light). Moderately accelerate vehicle to 40 MPH for a minimum of 15 seconds (30 seconds above 4000-ft. elevation) Transmission should be in 3rd gear. While holding speed steady, press Overdrive Cancel Switch (LED should go off) and accelerate from 40 MPH to 50 MPH. Transmission should shift from 3rd gear to 4th gear. Hold speed steady for 15 seconds. While holding speed steady, lightly apply and release brakes enough to turn brake lights on. Maintain 50 MPH for about 5 seconds. Stop vehicle for a minimum of 20 seconds with transmission gear selector in Drive. Repeat procedure 5 times. Always complete the procedure before returning the vehicle to the customer.
Sometimes disconnecting the battery for a few minutes will reset the check engine light. Make sure you have the correct radio code before doing this or your radio will not work after disconnecting the battery.
If you disconnect the battery for 1 minute and reconnect it the check engine lite will reset. when you start your vehicle again the lite shouldn't be on unless the problem is still present. If the problem is still there the lite will come on again and you should take it in to a shop and have it diagnosed for engine codes and see what the problem is.
Try disconnecting the battery first though before you go spending great amounts of money on something that was probably just a minor glitch in the computer.
Bets of luck and let me know if this has helped you.