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1996 chevy monte carlo runs strong,idles rough

New egr,idle valve,plugs,and wires,first noticed problem soon after my daughter let it run out of gas.225,000 miles on car. Goodwrench told me number 5 cylinder,so I changed all the above.Still idles rough but as soon as you accelerate it runs very strong ,service engine soon light has been on ever since,approx 3,000 miles ago.

PS
Have'nt changed coil yet?

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Hold of on coil.

Basics.
Check the fuel pressure. I had this problem in a restore, turned out to be fuel sock in fuel tank or filter.
Check for vac. leak. Soap water at intake manifold and throttle body, injectors.
Then check plug wires at idle in the dark for minor crossover,
Now you can ck coil but i bet it is ok.
PS Check the linkage stops

Hope this helps if so let me know Thanks Mike

Posted on Aug 30, 2017

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Posted on Jan 02, 2017

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