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Hello, What are the OEM spark plugs for my 1994 Mark VIII? I need brand and model number...getting ready to change them out at 115K for the first time. No issues...just think its time. Any advice or tips for the first-timer? Thanks, Fife

Hello, Just looking for some opinion/s on fuel grade. My wife drives our stock 1994 Mark VIII to work (about 32 miles each way). We have always used premium unleaded in the car. Was wondering if using mid grade (89 octane) would cause any issues? She does not drive the car hard at all. I...

My wife and I were on a trip yesterday and I noticed a very light growling noise coming from the rear...right side I believe. At first it reminded me of the type of noise you might hear when driving on pavement that isn't real smooth. But then I noticed that the noise comes and goes. When I...

Hello, I just purchased an Accel Kool Blue Air Filter (like K&N) off Ebay for my 1994 Mark VIII. Dimensionally it seems exactly like the standard paper filter I am using. However, when I tried to install it, it just collapsed into the air filter housing due to the rubber edge around the...

Hello, My 1994 center console lid is in need of repair or replacement. The cover seems to be warping and separating from the bottom part. The lid doesn't want to stay latched either. I checked the hinges and the three screws seem to be stripped out and very lose in their holes. I think this...

I just converted to coil springs. Is there a market for used air bags? If so, about how much can these be sold for?

Hello, I just completed converting my air ride to coil springs with the Arnott kit on my 1994 Mark VIII. The final step in the instructions was to unplug the black connector under the passenger kick panel to prevent the message center from displaying an air ride problem. I did that and it...

I have been reading a lot of previous posts about the topic and have decided to convert the suspension on my 1994 to coil springs. I like the idea of lowering the car but it seems that a lot of you are having problems with the 1.5 inch drop; bottoming out, etc. So maybe I should just go with a...

I recently replaced the gear plugs in both windows on my 1994 and they have been working just fine for months. Now my wife states that the drivers side motor won't shut off when she uses the express down feature. She has to stop the motor manually with the window switch. What is causing this...

While adjusting my 1994's right headlight I ran into a problem. When I raise it up to level, the assembly is loose (up and down). If I adjust so the headlight points almost all the way down then it becomes tight with no (up and down) play. Since I am not familiar with the mechanism in the...

I have read some of the previous posts but still not sure what to check first. We tried the emergency flasher today and it did not work. Then we discovered that the turn signals didn't work either. But then they did a little bit later and now they don't again. As far as I can tell everything...

I am going to replace all the coolant hoses and have obtained the four main ones. I forgot the small diameter one that goes from the coolant reservoir to the thermostat housing. My parts man cannot locate it. Anyone have a part number for this hose (whatever you call it)? How about a parts...

I believe I have a worn out lower ball joint on my 1994. Recently I replaced the upper control arm assemblies and tie rod end links. I took it to my mechanic for an estimate and am considering replacing everything that hasn't been; except for the tie rod ends which seemed to be good to the...

I was looking in the manual of my 1994 Mark VIII. It said to use silicone to care for and protect weatherstip and rubber parts. What type of silicone spray should I get? I did not see anything in the parts store specifically for this purpose. Would I use silicone spray lubricant? I saw some...

I am considering upgrading the halogen headlights in my 1994 Mark VIII. I have looked into two options. 1) Higher performance halogen bulbs; such as Slyvania Silverstar or Silverstar Ultra. They run about $38 a pair. 2) Halogen to HID conversion "plug-n-play" kits. Run about $100 or so on...

I have researched previous posts and been to the parts store and still cannot determine which temp thermostat came standard on the 1994 Mark VIII. I will know when I change it out but I was wanting to get the parts in advance. Oreilly's sells a 195 degree and a (Motorcraft) 180 degree. Anyone...

My 1994 has had a small engine oil leak for some time. I noticed a spot on the floor the other day so it must be getting a little worse. It is in the area of the oil filter; probably in front of it but not sure (everything within six inches or so of the area around the oil filter has a light...

My 1994 has a small leak on the right rear half shaft. The seal must be failing. The leak is where it enters the differential. My question is: How much trouble is it to change this seal? Special tools required? Should I take it somewhere to get this repaired...I am just an average backyard...

I have been looking for a supplier for heater hoses, coolant hoses, etc. I tried RockAuto and TeamFordParts online as well as Autozone. Some of the hoses are supposedly obsolete or not carried any longer. Anyone know a good source for these parts?

Hello, I noticed this morning that my wife's 1994 Mark VIII did not have any backup lights on when she was coming out of the garage. I had her slowly move the gear selector and the lights do come on half way between park and reverse. I am wondering where the problem lies. I did recently...