# 3.9 ford 2005 backfire

**URL:** <https://community.cartalk.com/t/3-9-ford-2005-backfire/34965>\
**Category:** Maintenance/Repairs\
**Tags:** ford, freestar\
**Created:** [August 12, 2009, 8:33pm UTC](https://community.cartalk.com/t/3-9-ford-2005-backfire/34965 "2009-08-12T20:33:28Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![nivek5255](https://avatars.discourse-cdn.com/v4/letter/n/9de0a6/32.png) [@nivek5255](https://community.cartalk.com/u/nivek5255)\
**Post date:** [August 12, 2009, 8:33pm UTC](https://community.cartalk.com/t/3-9-ford-2005-backfire/34965/1 "2009-08-12T20:33:28Z")

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At 2000rpms the motor backfires. It has new plug and wires and map sensor. 203000 miles

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**Author:** ![bennyandthejets](https://avatars.discourse-cdn.com/v4/letter/b/b487fb/32.png) [@bennyandthejets](https://community.cartalk.com/u/bennyandthejets)\
**Post date:** [August 12, 2009, 10:21pm UTC](https://community.cartalk.com/t/3-9-ford-2005-backfire/34965/2 "2009-08-12T22:21:20Z")

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Backfiring usually means it is getting gas or too much gas at a place or time when it shouldn’t be getting any or that much gas. Often times this is related to a timing issue. I’d start with a good look at the ignition system, wires, dist, etc. Check the timing. Could something be leaking? Is the advance working (if it has one, it’s probably electronic.)

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**Author:** ![EllyEllis](https://avatars.discourse-cdn.com/v4/letter/e/f14d63/32.png) [@EllyEllis](https://community.cartalk.com/u/EllyEllis)\
**Post date:** [August 13, 2009, 2:48am UTC](https://community.cartalk.com/t/3-9-ford-2005-backfire/34965/3 "2009-08-13T02:48:20Z")

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I’m curious, what year/s did Ford make a 3.9 engine?? It saeems to me that the original V6 was 3.9.  
No, the original one was 2.9 sorry.