# 1989 Cadillac DeVille - can’t get full power

**URL:** <https://community.cartalk.com/t/1989-cadillac-deville-can-t-get-full-power/172278>\
**Category:** Maintenance/Repairs\
**Tags:** deville, cadillac\
**Created:** [November 14, 2020, 3:36am UTC](https://community.cartalk.com/t/1989-cadillac-deville-can-t-get-full-power/172278 "2020-11-14T03:36:02Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![mcdaniel001](https://avatars.discourse-cdn.com/v4/letter/m/edb3f5/32.png) [@mcdaniel001](https://community.cartalk.com/u/mcdaniel001)\
**Post date:** [November 14, 2020, 3:36am UTC](https://community.cartalk.com/t/1989-cadillac-deville-can-t-get-full-power/172278/1 "2020-11-14T03:36:02Z")

</div>

Cant get full power, feels like i am running out of gas even with full tank.

---

<div class="post-metadata">

**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\
**Post date:** [November 14, 2020, 11:38am UTC](https://community.cartalk.com/t/1989-cadillac-deville-can-t-get-full-power/172278/2 "2020-11-14T11:38:33Z")

</div>

Plethora of possible problems.

---

<div class="post-metadata">

**Author:** ![davepsinbox\_157004](https://avatars.discourse-cdn.com/v4/letter/d/73ab20/32.png) [@davepsinbox\_157004](https://community.cartalk.com/u/davepsinbox_157004)\
**Post date:** [November 14, 2020, 9:47pm UTC](https://community.cartalk.com/t/1989-cadillac-deville-can-t-get-full-power/172278/3 "2020-11-14T21:47:30Z")

</div>

A bad fuel pump comes to mind but you really need someone with hands on the car.

---

<div class="post-metadata">

**Author:** ![ok4450](https://avatars.discourse-cdn.com/v4/letter/o/e9bcb4/32.png) [@ok4450](https://community.cartalk.com/u/ok4450)\
**Post date:** [November 15, 2020, 4:02pm UTC](https://community.cartalk.com/t/1989-cadillac-deville-can-t-get-full-power/172278/4 "2020-11-15T16:02:10Z")

</div>

A clogged catalytic converter can cause lack of power problems. That can be easily diagnosed with a vacuum gauge if you can find someone who knows how to read it for a clog as there can be 2 symptoms.

Worn out engine, filthy air filter, or slippage in the transmission can also cause this kind of problem. It’s going to take hands on and a diagnosis as at 32 years old anything is possible; or even a combination of anythings.