Engine light came on 2 days later no engine light runs rough when idleing also rough when driving i hear a small click noise around injector
Failed / clogged injector (s) . Fuel pressure regulator .
Ruben, Click noise by an injector, if it is only the one injector, it could be faulty causing the problem. Take into a good shop to have trouble codes checked, diagnosed and estimate repair. Check the attached links,instruction and guides, Good luck
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Here are the most common causes of idle surge, rough idle esp when cold, other symptoms include stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake
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