Change the EGR Valve on a 1998 Isuzu Trooper
If your check engine light is on and the mechanic or auto-parts store diagnoses your problem as the EGR valve for your 98' Trooper, this article will help you to replace the part yourself. This part costs between $100 to $150 and is simple to replace.
Steps
- Verify that the EGR valve needs to be replaced, and purchase the part.
- Park vehicle on a flat surface and open the hood.
- Allow the engine to cool.
- Remove the negative (-) battery terminal.
- Remove the plastic engine cover.
- Disconnect the wire connection from the EGR.
- Spray some WD-40 around the base of the EGR valve and over the bolts to help loosen them.
- Using a 12mm socket with extension ratchet, remove both bolts.
- Remove the old EGR valve and gasket from its base.
- Clean the EGR valve mounting base (the two in/out holes on the engine) with carb cleaner, as there will be burned residue and buildup.
- Make sure the base is clean and smooth before installing the new EGR valve.
- Spray a bit of carb cleaner into the new EGR valve to prime it.
- Set the new gasket over the base and place new EGR valve over it.
- Align it with the bolt holes.
- Insert bolts and tighten with ratchet.
- Reconnect wiring to the new EGR valve.
- Reconnect negative (-) terminal to battery.
- Note: Radio presets are lost when you disconnect the battery! To make reprogramming easy, write down all your programmed radio station button settings before disconnecting the battery.
Tips
- Try removing the EGR and cleaning it and the intake valves with carb cleaner before purchasing a new one.
Warnings
- Allow the engine to cool before commencing work!
Things You'll Need
- Ratchet set (metric)
- 12mm socket
- New EGR valve
- Carburetor cleaner
- Shop towels
References
- http://autorepair.about.com/od/glossary/gr/def_egr-valve.htm
- http://www.doityourself.com/forum/passenger-cars-suv-service-repairs-no-trucks/166675-check-engine-light-isuzu-trooper.html