Top C Posted October 8, 2021 Posted October 8, 2021 I discover the other day that my EGR valve wasn't working on my 87 4.0 Jeep Comanche. I had just replace the 02 Sensor and I decided to test the EGR valve with a vacuum pump to make sure it was working and discover it wasn't. I looked everywhere for new one and finally found one at Autozone fits and works perfectly. There are a few left if anyone needs one the part number is EGR4458. Mike
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