Question about Pontiac Grand Am
When we stop the pontiac dies almost alll the time
The EST circuit or electronic spark control is the ignition advance curve programmed into the ecm or ignition module depending on type of system you have it varies on year make and model. Codes involving est circuits usually include the crank sensor problems cam sensor problems (if equipped) ignition modules or the engine computer
Posted on Dec 06, 2012
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Posted on Jan 02, 2017
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