# 2992 chevy malibu fuel problem

**URL:** <https://community.cartalk.com/t/2992-chevy-malibu-fuel-problem/49568>\
**Category:** Power/Fuel\
**Tags:** chevrolet, malibu, gasoline\
**Created:** [May 29, 2010, 5:49pm UTC](https://community.cartalk.com/t/2992-chevy-malibu-fuel-problem/49568 "2010-05-29T17:49:23Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![system](https://global.discourse-cdn.com/cartalk/original/3X/1/d/1d47c66a543aa6c5a7873bb2320858f978ff52ed.png) [@system](https://community.cartalk.com/u/system)\
**Post date:** [May 29, 2010, 5:49pm UTC](https://community.cartalk.com/t/2992-chevy-malibu-fuel-problem/49568/1 "2010-05-29T17:49:23Z")

</div>

the car starts easily and idles smoothly but when I try to drive it it surges and fades as though the fuel pressure is varying wildly.  
  
 The check engine light said it was the EGR valve. I replaced that and the fuel filter but neither made a difference. Also, the pressure regulator on the fuel injector rail was replace less than two years ago. help!

---

<div class="post-metadata">

**Author:** ![ignoramus9](https://avatars.discourse-cdn.com/v4/letter/i/d07c76/32.png) [@ignoramus9](https://community.cartalk.com/u/ignoramus9)\
**Post date:** [May 29, 2010, 5:54pm UTC](https://community.cartalk.com/t/2992-chevy-malibu-fuel-problem/49568/2 "2010-05-29T17:54:42Z")

</div>

put a fuel pressure gauge on it and rev the engine to see if it is the fuel pump.  
You can try some techron to clean the injectors.

---

<div class="post-metadata">

**Author:** ![Cougar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cougar/32/21348_2.png) [@Cougar](https://community.cartalk.com/u/Cougar)\
**Post date:** [May 29, 2010, 8:33pm UTC](https://community.cartalk.com/t/2992-chevy-malibu-fuel-problem/49568/3 "2010-05-29T20:33:57Z")

</div>

If the fuel pressure is ok then perhaps the throttle position sensor has a problem.