SOURCE: my jimmy wont run properly untill i add fuel injector cleaner
Possibly a clogged fuel filter or bad plugs/wires.
SOURCE: check engine light
yes you will have to hook it to a scan tool and erase the dtc or the light will stay on. sometimes you can unhook the battery for 30 sec or pull a fuse or turn the key on and off a couple of times
SOURCE: EGR CODE P0401,IF I APLLY VACUUM TO THE EGR VAVLE
The mechanical components of the egr themselves may be fine, but the electrical circuit that moves the egr may be faulty. now if the egr valve uses vaccum to operate, then it may be sticking just enough to throw a code.
SOURCE: Describe hoe to clean a EGR vavle on a 96 Nissan
i wouldnt clean it i would simply replace it. its about 100 dollars at autozone and while you have it off go ahead and clean the metal tube that goes into the housing that the egr valve attches to. its probably clogged up with carbon get a pocket knife and poke at it till it breakes then blow air into it to make sure its clear.
SOURCE: My 93 jimmy has surging
Could be a bad MAP sensor, or perhaps the wiring or vacuum hose connecting to it is faulty.
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