SOURCE: erg valve
The EGR valve is located next to the TPS connector. It has two bolts holding it in place. You will need to replace the gasket when you take it off.
SOURCE: remove airbag 99 gmc jimmy
I actually just took mine out today on a 1998 Gmc Jimmy. Its kind of simple now that ive done it. There are four ten millimeter bolts holding the passenger module in. you will need to drop your glovebox down so it is upside down to see these. It is easier if you take it right off. just take a shop light and look at the bottom of the module you will see two silver bolts (the only two ten mm down there) take them out. Then if you look up underneath you will see another up at the top left. To get this out you can hand wrench it or you can use a mini impact with an ajustable extension. to get the next the easiest way I found was to take off the trim aroung your speedometer get in the drivers seat and there is another ten millimeter nut on the top right (right by the vent holes) take that out then you are unbolted. Without going into tons of details when you start doing it you will quickly realsie how to do it it just takes some patience. Dont forget to pull the fuse before you do anything its a 15 amp fuse second row 3rd up in the panel inside the car. Hope this helps
SOURCE: mass air flow sensor replacement (variable valve timing)
The MAF is on the Air Intake above the air filter box and screwed into the plastic tube heading toward the throttle body. It is the 2" by 2" plastic protrution from the air intake tube. There should be two philips screws holding this in. Remove the two screws and back the entire MAF out. There is a wire harness connected, unclip this to remove completely.
If you have money burning a hole in your pocket, go ahead and purchase another MAF for a few hundred clams, or you can spend about $10 and clean it. It's made out of titanium and I doubt it will fail in 10 years. But sometime it does happen.
Go to Lowes, or Home Depot and buy Electronic Cleaner in a spray can. If you look inside the sensor, there is a heated wire, and behind that is another wire which picks up the oxidized air.
Stick the tube which is attached to the electronics cleaner spray can into the cavity where these wires are seen. Continue to spray most of the can onto these wires to remove oxidation build up from the wires. Let it evaporate for a few minutes then hit it again.
Allow the assembly to evaporate complete for about an hour.
In the mean time, take some throttle body cleaner and spray out the throttle body with the valve open. Keep open to let it dry out quicker and clean up the black crud that come out.
Keep you air filter replaced.
Put everything back together and you should be good to go.
DIYr-X
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