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2003 Elantra EGS, 4 cyl. automatic transmission.

Basically this issue started recently after having the rad, water pump and timing belt replaced. Oil was also leaking from the valve cover which was cracked so had that replaced along with the gasket. Battery connections also cleaned as there was a fair bit of corrosion on one. The car now stalls either during idle or while driving at speed but not consistently. CEL also shows up. Stopped in at another garage near work where they thought it might have been the plugs or wires and had them changed along with servicing and cleaning the throttle body which was pretty black. Problem still persists.

The second mechanic thinks it may be because the timing belt is misaligned a tooth or two which is messing with the TCM (transmission control module?) so he won't touch that as the work is still under warranty with the first garage.

Is that a possibility? Any other potential causes? Only error code to come up was CEL which was purged after tune-up.

Any help is greatly appreciated.
 

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2003 Elantra automatic .

CEL also shows up.
Did somebody scan, and what was the stored DTC ?

Stopped in at another garage near work where they thought it might have been the plugs or wires and had them changed along with servicing and cleaning the throttle body which was pretty black. Problem still persists.
What was the DTC recovered from the scan?

The second mechanic thinks it may be because the timing belt is misaligned a tooth or two
Did he actually inspect the belt timing for proper install?

which is messing with the TCM (transmission control module?)
Nope, cam / crank correlation is function of PCM, and usually set a timing related DTC

so he won't touch that as the work is still under warranty with the first garage.
I dont like to get involved with car that been passed around and not know what first fella did, and have to spend time for free trying to figure out what first fella did before I can actually caryy on witih proper diag of original concern to male valid repair.

Is that a possibility? Any other potential causes?

Only error code to come up was CEL which was purged after tune-up.
"CEL" is not an error code.. DTC is in a Pxxxx format, without the DTC, we do not know what circuit the PCM or TCM has determined to be at fault..

Oh yea, what was the DTC recovered before the "tune-up" was done ?


Any help is greatly appreciated.
What was the DTC recovered originally that led you to have timing belt and other work done ?

Are there any current DTC that come back after repair attemts, and what is those DTC (in a P0xxx / P1xxx / P2xxx format)
 
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