Get engine air filter out and install new.

******* ATTENTION !!! ***** ATTENTION !!! ***** WARNING !!! ******

* DO-NOT ... UN-PLUG or REMOVE ANY ELECTRICAL SENSORS or WIRES FROM ANY PART OF YOUR ENGINE or CAR, WITH-OUT- (FIRST) DISCONECTING THE (-) NEG - CABLE OF THE CAR BATTERY!!!!

IF YOU DO-NOT, YOU RUN A VERY HIGH RISK OF DAMAGING THE SENSOR AND ALSO OTHER ELECTRONIC CIRCUITS ON YOUR CAR.

AFTER, YOU HAVE COMPLETED THE REPAIR OR REPLACEMENT OF THE SENSONS AND OR ELECTRONICS SYSTEMS, THEN & ONLY THEN RECONECT THE (-) NEG - CABLE BACK ON TO THE BATTERY.

***** SAVE YOURSELF --- LOTS OF $$$$$$ & HEADACHES ! *****
GOOD - LUCK!!!

Fuel Filter The filter should be inspected for external damage and/or leakage at least once a year. The fuel filter should be changed only as necessary. Toyota Motor Corporation recommends replacing the carbureted fuel filters at 15,000 miles and 30,000 miles on fuel injected models. NOTE: Fuel lines and connections, fuel tank vapor vent system hoses and fuel tank bands should be inspected every 60,000 miles or every 36 months. The fuel tank cap gasket should be replaced 60,000 miles or every 72 months.
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REMOVAL & INSTALLATION Carbureted Engines The fuel filter on carbureted engines is a plastic cylinder with two ports for the fuel. It is usually located in the engine compartment near the charcoal canister.

1. Using a pair of pliers, expand the hose clamp on one side of the filter, and slide the clamp further down the hose, past the point to which the filter pipe extends. Remove the other clamp in the same manner. Grasp the clamps and slide them up the hose slightly above the filter ends
   
   
2. Grasp the hoses near the ends and twist them gently to pull them free from the filter pipe. Slide the hose off the end of the fuel filter end
   
   
3. Pull the filter from the clip and discard. Be carefull when removing the filter, some fuel may spill out if not held upright
   To install:
   
4. Install the new filter into the clip. The arrow must point towards the hose that runs to the carburetor.
5. Push the hoses onto the filter pipes, then slide the clamps back into position.
6. Start the engine and check for leaks.

Fuel Injected Engines 1993-97 MODELS

1. Turn the ignition switch to the LOCK position. Disconnect the negative battery cable and wait at least 90 seconds before proceeding with working on the fuel system. This will depressureize the fuel system. The fuel filter can be hard to locate on these engines
   Fig. 4: Exploded view of the fuel filter mounting - 1993-97 models
   Fig. 5: Disconnect the negative battery cable prior to all fuel system repairs
   CAUTION
   Failure to depressurise the fuel system could cause personal injury.
   
2. Disconnect the Intake Air Temperature (IAT) sensor wiring.
3. Loosen the air cleaner hose clamp bolt, the disconnect the four air cleaner cap clips. Fig. 6: Loosen the air cleaner hose clamp bolt
   
   
4. Spearate the air cleaner hose from the throttle body, and remove the air cleaner cap together with the air cleaner hose.
5. Disconnect the EVAP canister hose from the charcoal canister. Fig. 7: Remove both EVAP hoses from the charcoal canister
   
   
6. Remove the charcoal canister from the bracket.
7. Place a suitable container or shop towel under the fuel filter. Remove the union bolt and two gaskets, then slowly disconnect the fuel inlet hose from the fuel filter outlet. Fig. 8: Remove the union bolt and two gaskets from the fuel filter, then disconnect the inlet hose from the filter
   
   
8. Using a special wrench 09631-22020 or equivalent, disconnect the inlet pipe from the fuel filter. Remove the two bolts and the filter from the vehicle. Fig. 9: Using a special tool, disconnect the inlet pipe from the fuel filter
   Fig. 10: Remove the two filter mounting bolts, then separate the filter from the vehicle
   To install:
   
9. Install the fuel filter with the two bolts and tighten them to 43 inch lbs. (5 Nm).
10. Using the special wrench 09631-22020 or equivalent, connect the inlet pipe to the fuel filter. Tighten to 22 ft. lbs. (30 Nm). Using a torque wrench, tighten with a fulcrum length of 11.81 inch (30cm). Install the fuel inlet hose to the filter outlet using new gaskets and union bolt. Tighten to 22 ft. lbs. 30 Nm). Fig. 11: Install the filter inlet hose to the filter outlet, then tighten to 22 ft. lbs. (29 Nm)
    
    
11. Install the charcoal canister to the bracket. Connect the two EVAP hoses to the canister.
12. Connect the air cleaner hose to the throttle body. Install the air cleaner cap together with the air cleaner hose.
13. Attach the IAT sensor wiring.
14. Connect the negative battery cable. Start the engine and check for leaks. Reset any various digital equipment such as radio memory and the clock if necessary.

The sizes given are the wrench sizes needed to perform the step.
1. Remove the negative battery cable from the battery.
2. Remove the hose that connects the air cleaner to the throttle body.
3. Remove the top of the air cleaner box (4 clips on the corners).
4. Take out the air filter. Disconnect the sensor on the side of the air cleaner.
5. Remove the three bolts (2 - 12mm, 1 - 10mm) that hold the bottom of the air cleaner box to the inner fender and remove the box.
6. Disconnect the two rubber hoses on the top of the air canister (one large, one small).
7. Loosen the clamp bolt (10mm) (be careful as there is a non-captive nut that will drop if you remove the bolt completely) and slide the air canister out.
8. Remove the two bolts that hold the fuel filter on to its bracket (10mm). It is the same bracket as the air canister's.
9. Remove the air canister/fuel filter bracket by removing the four bolts that hold it in place (10mm).
10. Remove the wire harness/hose bracket directly in front of the top starter bolt (12mm) - this will facilitate your ability to get a socket wrench on the starter bolt. On my car it was RIGHT in the way!
11. Loosen the top starter bolt (14mm).
12. Loosen the bottom starter bolt (14mm) and remove it completely.
13. Hold the starter up and remove the top bolt completely. Flip the starter over and place it on the drive axle below with the wiring facing up.
14. Disconnect the solenoid plug and the starter cable (12mm).
15. Remove the starter by snaking it through the driver's side of the motor compartment. There's enough room if you're patient - be careful not to snag anything and damage it.
16. Snake the new starter down through the driver's side reverse of the way the old one came out. Lie it on the drive axle and connect the solenoid connector and the cable.
17. Flip it over and up into place. Hold it in place and start the top bolt. Tighten it by hand enough that the starter stays in place by itself.
18. Start the bottom bolt; tighten it up all the way.
19. Tighten the top bolt the rest of the way.
20. Connect the battery cable and try the starter - before you put everything back!
21. Replace canister/fuel filter bracket and bolt the fuel filter in place.
22. Slide the air canister in and tighten the clamp bolt. Connect the two rubber hoses on top of it.
23. Install the bottom of the air cleaner box; plug in the sensor.
24. Put in the air filter and then replace the top of the air cleaner.
25. Connect the big hose from the air cleaner to the throttle body.
NOTE: You may have to reset the "check engine" light when you're finished (I think starting the car when we check it in Step 20 can freak out the computer since there are still things disconnected). To do this, find the fuse block on the driver's side of the engine compartment; remove the 15A EFI fuse for 30 seconds. Put the fuse back in - the light should now be reset.
That's it! Shouldn't need another one for another 150,000 miles!

A helpful rating and an testimonial would be greatly appreciated if you are satisfied with my solution ...

Steps to replace the battery

Air Cleaner Removal

1. Loosen the air intake hose clamp (with a flathead screwdriver), which holds the intake tube to the air box lid.

2. Once the hose clamp is loosened, pop open the two spring-loaded clamps on the left and front side of the air box. The clamps help secure the lid to the air box. On the back of the air box lid there are 4 plastic slots, which match up with 4 corresponding tabs on the air box. In order to unhinge the lid from the air box, slide the lid away from you about an inch and gently lift the lid up. Ensure that the lid is free from the air box hinge; then carefully disconnect the air intake hose from the lid at the hose clamp and remove the lid from the engine compartment.

3. Lift the air filter out of the air box. 4. Disconnect the PCV hose from the lower air box.

5. The lower air box is removed by just tugging straight up on it. It will pop out as it's held in place by two rubber pins that wedge into the indentations in the plastic air box.

Battery Removal

6. Disconnect the battery terminals - negative 1st, the positive. 7. Remove the anchor bolt at the base of the battery using a 1/2" socket. 8. Lift battery out (with a battery carrier strap). Save the thermal blanket wrap to slip on the new battery.

Cleanup and Installation

9. Clean the terminals by dipping in a cup filled with baking soda and warm water. Use a battery terminal cleaning tool, wire brush to remove the corrosion or a tiny screw driver to scrape with. Rinse with water and clean up the tray with a towel.

10. Install the thermal blanket on new battery. Note the position of the notches on the blanket when replacing it. Lift into car and slide the battery as much as possible towards fender. Reinstall retaining bolt.

11. Install felt washers ($1) to prevent corrosion on the terminals

12. Reinstall terminals (positive 1st, then negative). Apply some grease or Vaseline to the tops of the terminals.

13. Reinstall air cleaner box. Carefully line it up and push down Make sure to seat it completely when you reinstall it.

14. Reinstall filter; cover. Make sure clips are on tight.
Thank you for using fixya and good luck
http://www.ptcruiserlinks.com/forum/pt-cruiser-videos/19853-video-how-replace-battery.html

1. Loosen the four screws that hold down the top of the air filter box. 2. Loosen the clamp that attaches the air filter box to the intake hose. 3. Disconnect the air sensor connector from the top of the air filter box. Note: Secure the connector wire, it tends to drop down and more than once I have had to remove the air filter box to retrieve it. 4. Remove the top part of the air filter box. You may need to twist it to get it to release from the rubber air inlet Hose.
5. Remove the two bolts holding the bottom of the air filter box. 6. Remove the bottom part of the air filter box.
7. Disconnect the negative then the positive battery cables.
8. Remove the three bolts that hold the brace that goes over the Windshield washer tank. 9. Remove the brace.
10. Remove the Battery hold down clamp at the base of the battery.
11. Remove the two nuts that hold the fuse box to the fender well. 12. Remove the two fasteners from the front of the widshield washer tank. 13. Rotate the windshield washer tank away from the battery. You may need to move the tank and lift the fuse box to get the tank clear of the battery. 14 Remove the battery.
To Install reverse the steps.
Time: 5 to 10 Minutes

Steps to replace the battery

Air Cleaner Removal

1. Loosen the air intake hose clamp (with a flathead screwdriver), which holds the intake tube to the air box lid.

2. Once the hose clamp is loosened, pop open the two spring-loaded clamps on the left and front side of the air box. The clamps help secure the lid to the air box. On the back of the air box lid there are 4 plastic slots, which match up with 4 corresponding tabs on the air box. In order to unhinge the lid from the air box, slide the lid away from you about an inch and gently lift the lid up. Ensure that the lid is free from the air box hinge; then carefully disconnect the air intake hose from the lid at the hose clamp and remove the lid from the engine compartment.

3. Lift the air filter out of the air box. 4. Disconnect the PCV hose from the lower air box.

5. The lower air box is removed by just tugging straight up on it. It will pop out as it's held in place by two rubber pins that wedge into the indentations in the plastic air box.

Battery Removal

6. Disconnect the battery terminals - negative 1st, the positive. 7. Remove the anchor bolt at the base of the battery using a 1/2" socket. 8. Lift battery out (with a battery carrier strap). Save the thermal blanket wrap to slip on the new battery.

Cleanup and Installation

9. Clean the terminals by dipping in a cup filled with baking soda and warm water. Use a battery terminal cleaning tool, wire brush to remove the corrosion or a tiny screw driver to scrape with. Rinse with water and clean up the tray with a towel.

10. Install the thermal blanket on new battery. Note the position of the notches on the blanket when replacing it. Lift into car and slide the battery as much as possible towards fender. Reinstall retaining bolt.

11. Install felt washers ($1) to prevent corrosion on the terminals

12. Reinstall terminals (positive 1st, then negative). Apply some grease or Vaseline to the tops of the terminals.

13. Reinstall air cleaner box. Carefully line it up and push down Make sure to seat it completely when you reinstall it.

14. Reinstall filter; cover. Make sure clips are on tight.

Good luck and thank you for using Fixya

it's located on the drivers side in front of motor,housed in large black plastic case with screws

The air filter is located in the large black plastic box that is on top of the engine. The warranty suggests replacing it every 50K miles.

To change the air Filter on an HHR:

It will take some time, so be patient.

1. Disconnect the air intake hose to the filter box. It is at the left rear of the box as you look at it from the front of the car.

2. Disconnect the MAP sensor wiring.

3. Disconnect the coupling to the engine intake.

4. The filter box is help in place by two ball and socket type retainers located on the back corners. Grasp the box and lift up firmly to lift it free,

5. Turn the assembly upside down. There are seven torx screws securing the cover of the filter. Remove them and replace the filter.

6. Reverse the process to re-install the filter box.

To change the air Filter on an HHR:

It will take some time, so be patient.

1. Disconnect the air intake hose to the filter box. It is at the left rear of the box as you look at it from the front of the car.

2. Disconnect the MAP sensor wiring.

3. Disconnect the coupling to the engine intake.

4. The filter box is help in place by two ball and socket type retainers located on the back corners. Grasp the box and lift up firmly to lift it free,

5. Turn the assembly upside down. There are seven torx screws securing the cover of the filter. Remove them and replace the filter.

6. Reverse the process to re-install the filter box.

It will take some time, so be patient.

1. Disconnect the air intake hose to the filter box. It is at the left rear of the box as you look at it from the front of the car.

2. Disconnect the MAP sensor wiring.

3. Disconnect the coupling to the engine intake.

4. The filter box is help in place by two ball and socket type retainers located on the back corners. Grasp the box and lift up firmly to lift it free,

5. Turn the assembly upside down. There are seven torx screws covering the filter. Remove them and replace the filter.

6. Reverse the process to re-install the filter box.