Having problems with your Hyundai Elantra ?

2005 elantra stalling/stumbling no CEL/no codes

\015 All of these issues started after I had the car detailed in June. The day of the detail I was leaving work and the car was shaking really badly. I had my tech take a look and he took the spark plugs out of there "housing unit" (not sure if thats what it called) and he discovered there was some water/cleaning agent in those areas. The car was misfiring and after he dried it out using what look like a high pressure air hose it started to run like normal with no misfires. But after a few weeks the car stalls over and over again with no CEL and no codes (typically after filling the tank) Replaced Wires (coil pack?),coolant temperature sensor. Fuel system checked everything in working order. There was a significant amount of fuel in evap canister, so I had that replaced as well, but my mechanic is still having the stalling issue. I work at a honda dealership, and my mechanic is running out of ideas of what the problem could be. I've taken it to a hyundai dealer, they had the car for 3 days and of course it didn't stall for them during test drives with no codes present either. After everything I've had replaced and checked so far the car is still stalling. What more should I be looking for? Is this a PCM issue? My mechanic thinks it may be the Crank position sensor, but I'm really tired of throwing parts at this car. Any help would be appreciated. Could the detail cleaning fluid damaged the spark plugs and the coil pack? I'm all out out ideas and patience.\015 Posted / edited by AnonymousUser on : 06-12-2021

Answers :

Generally speaking, when the car stalls you are loosing spark to the plugs or fuel to the injectors, or both. One or two bad plugs will not cause it to stall.
My guess would be water-moisture in the wiring harness or connectors which would cause the connections to fail from time to time.
You'll have to catch it when it stalls to find out if it is spark or fuel to proceed. Make sure the connections in the harness are clean and dry.
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