Top 10 2003 Pontiac Sunfire Questions & Answers

Had the same problem its not the fuel pump, change the throttle positioning sensor.

Light is burned out in radio. You can replace the front face of the radio from a good one with a good light and put on your radio and the radio will light up and work in your car. If you replace the whole radio you will need to have the radio unlocked.
Remove your radio. Locate a used radio at a wrecker. Put your car is accessory key postion and plug in the radio at the wreckers. if it lights up it is good. Remove the bottom panel on both radios and unplug the 2 wiring plugs that come from the front face. they are side by side. Unclip the front face and plug back into your radio. Replug it in and snap the bottom back on your radio. Plug back in and it will now light up your radio.
The whole procedure should not take more than 15 minutes and all you need is a 7mm socket and a flat screw driver.

If you are more daring you can also buy a cheap am/ fm only radio with a light and replace th circuit board of the back of that one to the circuit board on your radio and use your own front face again. It willl light up and all your items will function regardless of whether the doner board had cd or not. Time on this is 3o minutes and you need a small wrench to remove the screws in the board.

Good luck. I replace about 10 on these each week so the wreckers in my locations no longer have many low end radios avalialbe either. This is the lowest cost way on fixing this issue.

my 1999 pontiac sunfire drivers door latch is broke can not close the door. i have it pulled shut? how much will a used latch cost, or even 3 bolts for it? all the auto stores/ jumk yards are closed for me to call

I had the same problem... yellow wrench "service" light and a clicking noise on my DRL (daytime Running Lights) icon. I found no codes when I put my diagnostic computer on it. Turned out I had a headlight out. Replaced the bulb and everything is hunky dory now!

See if you can make the latch work by just using a screw driver in the slot to lock it, then open it with the key. If that works ok, you will need to raise the striker and align it to the latch.

A code P0440 could mean one or more of the following has happened: The gas cap is not installed or working properly The purge solenoid has failed The canister is plugged and not working properly Possible Solutions With a P0440 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try: Remove, inspect, clean the sealing gasket and reinstall the gas cap, clear the code, and drive for a week and see if the codes come back. If the code comes back, have the gas cap itself checked. If all is ok, then move on to the rest of the possible fixes. Inspect the EVAP system for cuts/holes in tubes/hoses Inspect for damaged or disconnected hoses around the Evap purge solenoid Check and/or replace the sensor Check and/or replace the purge valve Have a professional use a smoke machine to detect leaks

use the link, it is the best discription on the net that i have found.

http://www.2carpros.com/how_to/how_to_replace_brakes.htm

this happened all the time on my 03, take two plyers, one in each hand and put them both onto the u-bolt (the part that the latch latches to) and pull up then try and close the trunk, sometimes the latch pushes that ubolt platform down so it cant grab

Remove or disconnect the following:

• Negative battery cable
  
• Air inlet duct
  
• Top starter bolt
  
• Lower starter bolt
  
• Starter electrical connectors
  
• Starter motor
  

Exploded view of the starter motor—2.4L engine

To install:

1. Install or connect the following:
   
   • Starter motor. Torque the bolts to 66 ft. lbs. (90 Nm) for 2.4L engine or 37 ft. lbs. (50 Nm) for the 2.2L (VIN 4) engine or 30 ft. lbs. (40 Nm) for the 2.2L (VIN F) engine.
     
   • Starter electrical connectors
     
   • Air inlet duct to the throttle body
     
   • Negative battery cable
     

The sensor is threaded into the pipe shown below. Please let us know if you have more questions.

2.2L Engine

NOTE Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.

1. Turn OFF the ignition.
2. Drain the coolant system.
3. Disconnect the Engine Coolant Temperature (ECT) sensor electrical connector.
4. Carefully back out the ECT sensor.

Fig. Coolant temperature sensor for the 2.2L Engine

To install:

1. Coat the threads only with sealer P/N 9985253 or an equivalent.
   NOTE Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
   
2. Install the ECT sensor and tighten the ECT sensor to 18.5 ft. lbs. (25 Nm).
3. Connect the ECT sensor electrical connector.
4. Refill the engine coolant system.