Where is the EGR valve located on 1990 Isuzu trooper?

Answer 1

I have a 1998 trooper, so there may be differences.

My ECL has been on for over a year - my mpg has been terrible.

Went to Autozone let them pull the code and it came up with a bad EGR, which they didn't carry.

Called around until I found a local parts store that had it in stock. Went there and asked to look at it, so I knew exactly what I was looking for. Not pix, I was holding it in my hand.

And I bought a can of carb cleaner spray.

On the 98 looking near the firewall just to the left of the engine, is the EGR. There is a wire lead to unplug, then unscrew two bolts.

Remove it, check to see if the gasket is intact and spray it liberally with the carb cleaner. ( Also check YouTube for removal and cleaning instructions.)

I scraped & cleaned it, replaced it and disconnected/reconnected my battery to make the ECL go off.

It did for about 2 days.

So I probably need to actually replace the unit - but also about $150 I don't need to spend (although that's cheaper than a $400 garage bill).

I have read mixed opinions about the EGR, which I'm sure you can find on your own and make your own decision about whether to replace it or not.

But it's honestly easier than changing a tire. Two bolts and a wire - takes about 15 minutes to change.