1998 Cadillac DeVille Q&A
1998 Cadillac DeVille Question: how to replace EGR Valve
When putting auto in Reverse and idling out of the garage, it "jerks" and does not run smooth. Also, going up hills from 50-60 mph, it has a really rough (rpm shift--not shift in gears). At stop signs, it runs really rough. In park, it idles just fine. Could this be EGR Valve, or engine idle circuit? How do you replace the EGR Valve? - tnt4nu
expensive guess and probably not the problem. go to a shop and get a real diag with a bid. Roy - mastertech6371
Have error code 404. Tried to take off egr valve to try cleaning. there are 2 bolts 1 is covered by fuel line bracket tried taking off motor cover off to see if i can move it some how. Only 1 of th...
I need to know how to check the engine coolant temperature sensor on a 2000 deville. My check engine light doesn't come on, but my temperature gauge rises.