Missing at 3000rpm

SOURCE: 93 grand cherokee has a very rough idle what could be the problem

tune up plugs plug wires air and fule filters

SOURCE: Idles too fast in park, drive or neutral. Big fuel $ loss.

check your iac (idle air contol) It is located on the throttle body

SOURCE: 1999 jeep wrangler idles rough almost dies out now has a slight miss or hesitation while driving

Please be fast about checking your fuel pump. It is not giving enough fuel pressure.

Cheers.

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SOURCE: My 2001 Jeep Cherokee rough idle on hot start up

SOUND LIKE INTAKE MANIFOLD VACUUM LEAK OR VACUUM HOSES VACUUM LEAK.ALSO DIRTY FUEL INJECTORS WILL CAUSE THAT PROBLEM YOU DESCRIBE.

Robert Monigold

• 390 Answers
• Posted on Oct 31, 2010

SOURCE: Checked the carb out at 0400 this morning while

a couple of places to look at would be the carb,(float bowl and needle valve)to see if it might be overloading it with fuel,the other would be the choke weather it be electric or vacume/mechanical, then look at the egr valve to see if is operating right,check the vacume on it also,if u pull a vacume on it, and it does the same thing, that it has been doing then its either going bad or there is a vacume problem.
If it is the fuel overloading it you can check the plugs to make sure,check for a black,sooty build up on them.(carbon buildup)
being as you put a new fuel pump in it it might be possible that it has blown an internal seal in the carb if its the original carb,and that would cause it to stall out till the fuel level came back down in the float bowl.