# quick diag question

**URL:** https://forums.speedlife.net/t/quick-diag-question/255817
**Category:** Shift518 Automotive
**Created:** [November 30, 2010, 10:00pm UTC](https://forums.speedlife.net/t/quick-diag-question/255817 "2010-11-30T22:00:58Z")
**Posts on this page:** 1
**Showing post:** 7

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### Author: ![toomanycamaros](https://avatars.discourse-cdn.com/v4/letter/t/7993a0/32.png) [@toomanycamaros](https://forums.speedlife.net/u/toomanycamaros)
#### Post date: [November 30, 2010, 10:30pm UTC](https://forums.speedlife.net/t/quick-diag-question/255817/7 "2010-11-30T22:30:26Z")

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> [@Garage heater recommendations](https://forums.speedlife.net/t/garage-heater-recommendations/37628/11):
>
> clogged catalytic converter perhaps?

It the cat was plugged up to the point where it would shut down at operating temp it should be apparent when the vehicle is cold and under load. It’s really hard to try and give even a semiaccurate answer without complete information as to exactly what happened and what the car is doing.

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