Engine runs rough at all RPM's. Was running well. Suddenly started running rough
Thursday, June 19th, 2014 AT 3:54 PM
7 Replies
JACOBANDNICKOLAS
MECHANIC
110,176 POSTS
Has the check engine light come on?
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Thursday, June 19th, 2014 AT 8:53 PM
JWELLS0735
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Yes the check engine light has come on and gone back off.
If I accelerate fast the van has plenty of power.
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+1
Friday, June 20th, 2014 AT 7:45 AM
JWELLS0735
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Replaced ignition coil and plug wires. No help
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Friday, June 20th, 2014 AT 4:55 PM
JWELLS0735
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Also scan codes showed multiple misfires.
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Friday, June 20th, 2014 AT 4:58 PM
JACOBANDNICKOLAS
MECHANIC
110,176 POSTS
Were the plugs changed? Have you checked fuel pump pressure as well as the regulator?
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Friday, June 20th, 2014 AT 7:47 PM
JWELLS0735
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Now I have replaced coil, plugs and wires. Fuel pressure is about 55psi at fuel rail. Still no change in rough running.
When I changed plugs there was a raw gas smell in cylinders.
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Saturday, June 28th, 2014 AT 7:15 PM
JACOBANDNICKOLAS
MECHANIC
110,176 POSTS
Have you checked the computer to see what trouble codes may still be stored? If I remember correctly, you should be able to do it without a scanner.
Cycle the key from off to the run position (not start) 3 times. The 3rd time, let the key on / engine off. It should read the codes in the odometer area.