20 Most Recent 2003 Pontiac Bonneville - Page 9 Questions & Answers

The Fixed Orifice Tube is located in the high pressure inlet to the AC evaporator core on the firewall, the high pressure side is the side with the small hose from the compressor. Below is a picture of the Evaporator core, note the two holes, the Fixed Orifice Tube goes in the smaller of the two holes.

The thermostat will be under the metal housing bolted to the engine that the upper radiator hose is attached to. Remove the two bolts that hold the housing to the engine. Remove the housing and the thermostat will be underneath it. I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Hook up scan tool turn ignition to on position engine off

Sounds like a bad fuel pressure regulator.Check for fuel in the vacuum line going to regulator.

The car needs to go through several drive cycles (normal driving) for the computer to be ready to evaluate the Evaporative system. Was the battery disconnected recently or did some one reset the check engine light?

Evaporative emissions, i.e. gasoline fumes. The fumes in the fuel system are collected in a canister and are then purged during normal driving to be burned by the engine. The ECM (electronic control module) checks the evap system each time the key is turned on. If the system fails the test enough times, the ECM will set a code and turn the SES light on. Possible causes: Damage to the canister, purge lines or valve, but most commonly it's a loose fuel tank cap. Buy a new cap, make sure it's tight after each refueling and if that was the problem, the SES will eventually turn off. You could also take the quick route and just clear the code after replacing the fuel tank cap.

behind bumper on frame rail ..slide under and look up... small square box , to replace u have to drill out rivets that hold and install chassis bolt to replace or new rivets.

You could start by checking the maxi fuses that feed the ignition switch. If you don't have power to the fuses feeding the ignition switch, the problem would be between there and the battery. The best tools for finding this type of problem is for me, is a wiring diagram and a test light. A test light is $5 at an auto parts store and you can copy your wiring diagram for ten cents a page at your local library...

Honestly, it sounds like your transmission is starting to go bad, With the cars I have had that hesitate to switch gears, the transmission went out soon afterwards. Have you made sure to check the fluid levels?

Also, check the level and color of the transmission fluid. It should be red/pink in color without much discoloration in it. And the level should be at the designated line on the dipstick.

my car has the same prob.. it could be that the switches are wearing out and/or you have to redo all the wire-ing in the your car!

Either the switch is bad or the computer itself is bad. I would take it to a garage and have them check the computer to see which one is bad. A diagnotic should not be very expensive. Some garages don't charge at all if you have them fix it.

you have something connected incorrectly - whatever has wires which you recently changed must be wired incorrectly...
If this is not the case, check the voltage regulator,. your alternator may not be shutting the charge to the battery off - the regulator would probably be inside the alternator or possibly on the firewall.
Ck

The check engine light comes ON.This light comes because there is any error code saved in cars computer.In this case the car needs to be scanned.You can get your car scanned at car diagnostic center like www.autozone.com or at your local car garage. Once the car is scanned the error code will be detected so as per that you can get the part replaced.At autozone service center its absolutely free to get car scanned.Because the engine light is on,its advisable to get car scanned.

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Thanks.

Interstate battery has a good nation wide warranty, 30 months free replacement and the rest is pro-rated.

Remove dash trim covering heater a/c master control switch,and 4screws holding control switch to dash

The arm rest, and inside door handle trim have phillips retainer screws...both the arm rest, and door handle trim need to be removed before the door panel can be pryed up from the bottom...white plastic push in clips secure the panel...after all have been popped loose...you should be able to lift the door panel up at the window to remove...be sure to look for insulation liners that should be taped back into position before re-assembling...the push in plastic clips are also available at your parts store..."Help Parts" for GM models...Hope this helps:)

you didnt mention changing the thermostat, common culprit of this problem, the thermostat is in the waterneck at the motor end of the top radiator hose, easy fix, be sure to use new waterneck gasket when putting back together

Antifreeze is full?