Car keeps stalling codes: P1298 and P0700

Tiny
KEN L
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I have seen this before, it is strange, I don't think cleaning the IAC motor will fix it but you can try. Did you clear the codes? and if so do you have new codes? IF could be he EGR valve is stuck open, I would remove it and use this video.

https://www.youtube.com/watch?v=DqUCbbKdWf4

let me know what happens.
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Friday, December 26th, 2025 AT 9:29 AM
Tiny
AKORD
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I don't have any codes. Can I test the EGR valve with a smoke machine?
This EGR valve is a harness connection, not a vacuum.
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Friday, December 26th, 2025 AT 9:40 AM
Tiny
KEN L
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Yep, try cleaning the IAC valve and yes a smoke machine can help test the EGR.
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Friday, December 26th, 2025 AT 9:58 AM
Tiny
AKORD
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This is an EGR valve. There was smoke coming out when I did a smoke test with a smoke machine.
Video (Click to make bigger)
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Friday, December 26th, 2025 AT 10:00 AM
Tiny
AKORD
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Probably the code P1399, got cleared because I disconnected the ground terminal when I changed the distributor cap and the spark plug wires.
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Friday, December 26th, 2025 AT 8:33 PM
Tiny
KEN L
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Yep, that valve is leaking good find. Yes, some codes will reset when the battery is disconnected.
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Monday, December 29th, 2025 AT 9:02 AM
Tiny
AKORD
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Hi Ken,

I cleaned the IAC valve. Right now, the car is idling properly.
Thank you for the help, Ken.
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Wednesday, January 14th, 2026 AT 3:59 PM
Tiny
KEN L
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Glad you could get it fixed, thanks for letting us know. Please use 2CarPros anytime we are here to help. Ken
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Thursday, January 15th, 2026 AT 10:59 AM

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