20 Most Recent 1999 Mercury Mountaineer - Page 5 Questions & Answers

If you had any work done to your vehicle, there is an on/off switch in the cargo area for the Air-ride. You can follow the air lines from the suspension forward to the pump, which should be around the ABS unit low in the engine bay. Some repair shops forget to turn the pump back on after lifting the vehicle for oil changes or tire rotations ,etc .. You did not say if the pump runs. If the pump runs and does not raise the vehicle , it is a different problem. Resubmit the problem. There is a Master dump valve which can stick. Let's say the pump does not run. Check fuses. The pump is only active IF all doors and the Cargo hatch are closed. The leveling has several triggers on the frame. It is possible that one could be defective. The Manual states that a level surface should be used before making adjustments. (You would not want your vehicle to set crooked going down the road).

Starter solenoid or just a starter bad, sometimes this comes out of nowhere but usually you can hear it start cranking slow shortly before failure.

Sorry no idea without a look ,but may i suggest you try a new pollen air filter ,i doubt this is the problem but it could be and as you turn the control to re-circulate then you get air flow .would really need to have a drive to have a better idea

It may be a fuel filter issue, or like the mechanics said, fuel pump. It is a fuel injected model, so that may be the issue also.

I assume it's the defroster on the glass your talking about
Get a multimeter and put it on ohms
Unplug the cable from the heater and put multimeter probs on and see if you get a reading
If no reading heater is open circuit

Connect to a live OBD2 reader and see if the O2 sensors jump a lot If so they are fine. If they read 0 or something constant, change. Check EGR could be stuck. Replace as needed. Hook up a manual gauge to the fuel and check the pressure. All cars are different but it should be somewhere around 50psi. See if the car hold pressure for about 10 minutes. Replace the fuel filter as well.

I believe that is a press on cage. Attempting to remove it will most likely destroy it beyond use. The only option with those is to replace the whole blower/cage assembly as it is a non-serviceable part. I’m happy to assist further over the phone at https://www.6ya.com/expert/cameron_6665f74c5d46fc23

This switch is located on the passengers footwell area below the glovebox. There is a reset button that you press. Check online for photos.

change fuel filter

Get the battery load tested. It is probably worn out and needs to be replaced.You could put it on a charger overnight and take a reading with a multimeter, it should read 13.5 to 14.2V. Starting the truck will drop it but it should bounce back to 12.5 to 13.V at least.This would give you a hint at least.

a defective oxygen sensor will make vehicles run rough and will stall out

Have you checked the coal pack? or the plugs?

You Have Bleeder Screws On All 4 Wheels. Start With The Right Rear Then Left Rear Then Right Front Then Left Front. Don't Let The Master Cylinder Go Dry.

Brake Power Booster. Check the Hose and the PVC Valve.What is happening is the Brake Power Booster is causing Back Pressure into your engine and causing it to not run properly