misfire
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CF Beginner
Joined: Nov 2018
Posts: 3
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misfire
96 cavalier 2.2 has a p0304 code.module ecm injectors plugs wires coils o2 sensor all replaced compression approx. 100 psi not running 150 running000 miles on it.runs fine till it goes from open to closed loopill not idle smooth. short term -34. no vacuum leaks found . I am out of ideas anybody came upon such a thing. has injectr pulses with noid light.runs great down the road but still shows negative fuel trim se width good on all 4 injectors. its my personal car as eating me alive with gas. thanks
CF Monarch
Joined: Oct 2017
Posts: 4,605
Likes: 268
From: USA
96 cavalier 2.2 has a p0304 code.module ecm injectors plugs wires coils o2 sensor all replaced compression approx. 100 psi not running 150 running000 miles on it.runs fine till it goes from open to closed loopill not idle smooth. short term -34. no vacuum leaks found . I am out of ideas anybody came upon such a thing. has injectr pulses with noid light.runs great down the road but still shows negative fuel trim se width good on all 4 injectors. its my personal car as eating me alive with gas. thanks
