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#1
10-27-2003, 08:46 AM
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Check engine light on
I have a 1997 blazer, 4wd, 4.3 vortec 72000 miles. The check engine light came on & I am getting a code of: P-0440 Evap Emission Control System Malfunction. Any solutions? The idle is real rough & kinda shakes the truck, boggy on take off, but, only sometimes. I have already replaced the, control module on the coil, fuel relay, pcv, & ignition switch. Thanks, Dan
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#2
10-27-2003, 01:28 PM
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Re: Check engine light on
Quote:
Good luck Roddy
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#3
10-27-2003, 01:40 PM
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Re: Check engine light on
Quote:
The only proper way to diagnos an EVAP system problem is to use an EVAP tester which injects smoke into the EVAP system and is veiwed under hi-intesity light As far as the running rough, this may or may not be related to the code Check for vacum leaks as a starter The EGR sticking open can also cause a rough idle complaint. It's fairly easy to pull off and inspect.
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