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Asked: Jan 26, 2008 - 12:37 PM

Status: Closed

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popop

2001 Hyundai Elantra. When Fan is switched on for Defrost, the engine stalls. HELP PLEASE!!!!!!!!!!!!popop

2001 Hyundai Elantra, 100K+ miles, good overall condition, taken care of.

This car belongs to a female friend of mine. When she selects either partial or full Defrost and switches on the blower, it stalls the engine immediately, even on the highway. Once the blower switch is in OFF postion, the engine will start and run normally. Passenger compartment heat settings work fine in all selection comninations and blower speeds; only Defrost settings or those including DEFROST do this.n

I personally performed all possible combinations of selecting DEFROST and Blower settings, all with the same results. I'm recomending to her that this issue be taken on by professional service people, but I would like her to be armed with some information prior to taking the car in.

I tried to locate an OBD port as well (I have a reader) but could not find one, nothing in the manual either.

Thanks for any/all feedback. This really has me stumped.

popop

In Maintenance & Repair > Heating / Cooling
4 answers - 665 days ago

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0patience

Date: Jan 26, 2008
Time: 03:50 PM

Are you sure it is ONLY in defrost?
What about A/C. Does it stall when you turn it to A/C?

If it does, then it is likely the compressor is seized.
There is a plug at the compressor pulley.
Unplug it and then test to see if it stalls.
If it doesn't, then you confirmed the compressor has seized.

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0patience

Date: Jan 26, 2008
Time: 03:50 PM

Are you sure it is ONLY in defrost?
What about A/C. Does it stall when you turn it to A/C?

If it does, then it is likely the compressor is seized.
There is a plug at the compressor pulley.
Unplug it and then test to see if it stalls.
If it doesn't, then you confirmed the compressor has seized.

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popop

Date: Jan 29, 2008
Time: 12:18 AM

Yeah Opatience, the A/C works fine, all settings. I should have metnioned that. Thanks for the response, your the only one so far. I was hoping this was something others had experienced and could shed some light.

popop

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nolefan3

Date: Jan 30, 2008
Time: 12:42 AM

Is there an engine light on when the vehicle is running?
Sounds like an electrical problem. I had a 2004 tiburon and the entire electronic system of the ac system had to be replaced replaced. This could also be an ECM problem. Yes take it to a professional but maybe not to a dealership, they may be inclined to get her into a new vehicle... unless you think that is something that she needs and can afford.
Hope this helps!

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0patience

Date: Jan 30, 2008
Time: 11:02 PM

Sorry I didn't get back to this one sooner.
The diagnostic port is located in the center console, I think it is behind the ashtray or close there.
There is a cover over it, I can't remember whether it is the ashtray, a cubby hole or just a cover.

One thing though, it probably won't tell you much, if it is related to the defroster, as that is controlled by the Body Control Module and most scanners won't read Body Control codes.

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