Question about Dodge Stratus

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The engine light is on to my Dodge Stratus 2004 and I took it to the Auto Parts place and they placed it on a device which stated emmissions control problems. What does this mean and what has gone wrong to create this problem?

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The best ideea is to scan your Engine Control Module (ECM) with a diagnosis scantool connected to the Data Link Connector (DLC) of the car. You will find definitely the engine fault code - "P...." and the clear description of the error(s). Also you can try to erase this error(s) from the Engine Control Module (ECM) memory. If errors are "sporadic" type you certain have permission to erase them, also for some kinds of "static" errors.
(If you don't have any diagnosis tool, you can also try something else. For check up if the engine have a proper turn, you can successively disconnect each spark plug coil from the engine wiring system, engine idle, car stationary. When you operating this you must be free of chassis ground (battery ground)!!! When you disconnect a spark plug coil and the engine speed (rpm) drops, that means this coil works properly. When one coil disconnected and engine speed (rpm) still remain unaltered, this coil (or spark plug) is out of order. First you can change only the spark plug and check up again. If no changes the coil is defective and must be replaced! My recommendation is first to change all spark plugs on the engine, and after that check up coils. Also you can try to disconnect the battery from car terminals, wait for 30 minutes and re-connect again battery leads in order to reset the ECM & turn off the engine light).
Emissions control problems ussualy are caused by (heated) oxygen sensors (HO2S), used catalytic converter, exhaust pipes leaks, ignition & injectors faults, ...
1. Check & replace if necessary all spark plugs of the engine.
2. Check & replace if necessary the air filter of the engine.
3. Verify the exhaust line for leaks & repair if necessary.
4. Check & replace if necessary (heated) oxygen sensors (HO2S).
5. If everything is OK, then the exhaust catalyser (catalytic converter) is too used and needs to be replaced. The hydrocarbon level (ex: 220 ppm) of the exhaust gas is controled by the exhaust catalyser. In some cases unfortunately after few years of lifetime the exhaust catalyser is too used.

Posted on Apr 27, 2010


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