# Hard starting

**URL:** <https://community.cartalk.com/t/hard-starting/8788>\
**Category:** Maintenance/Repairs\
**Created:** [December 29, 2007, 2:45pm UTC](https://community.cartalk.com/t/hard-starting/8788 "2007-12-29T14:45:14Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![JOHN\_CHOMYK](https://avatars.discourse-cdn.com/v4/letter/j/f6c823/32.png) [@JOHN\_CHOMYK](https://community.cartalk.com/u/JOHN_CHOMYK)\
**Post date:** [December 29, 2007, 2:45pm UTC](https://community.cartalk.com/t/hard-starting/8788/1 "2007-12-29T14:45:14Z")

</div>

I have a 1999 chevy blazer with a 4.3 v-6 that will not start easily in cold & damp weather. When I spray some starting fluid into the throttle body it will start up and run fine.Is there a sensor for cold starts that might not be working properly?

---

<div class="post-metadata">

**Author:** ![hellokit](https://avatars.discourse-cdn.com/v4/letter/h/6a8cbe/32.png) [@hellokit](https://community.cartalk.com/u/hellokit)\
**Post date:** [December 29, 2007, 9:38pm UTC](https://community.cartalk.com/t/hard-starting/8788/2 "2007-12-29T21:38:42Z")

</div>

Yes, the engine coolant temperature sensor (cts) tells the engine computer the temperature of the engine. The engine computer then sends a rich fuel/air mixture signal to the engine. When the engine is starting, and when cold, it needs a richer (more fuel) mixture. The cts may be telling the engine computer lies.