# 99 Chevy Suburban 5.7L Won't Accelerate **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** chevrolet, suburban\ **Created:** [October 10, 2013, 7:12pm UTC](https://community.cartalk.com/t/99-chevy-suburban-5-7l-wont-accelerate/81730 "2013-10-10T19:12:47Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![NebraskasFinest](https://avatars.discourse-cdn.com/v4/letter/n/74df32/32.png) [@NebraskasFinest](https://community.cartalk.com/u/NebraskasFinest)\ **Post date:** [October 10, 2013, 7:12pm UTC](https://community.cartalk.com/t/99-chevy-suburban-5-7l-wont-accelerate/81730/1 "2013-10-10T19:12:47Z")
I have a 1999 Chevy Suburban K1500 4 wheel drive. It has a 5.7 liter engine and has 360,000 miles. I recently had a fuel pump put in last year. It is now running sluggish when I accelerate it will not go. This happens after it seems to warm up about 15 minutes of driving. I just replaced the fuel filter thinking that it may have been plugged up but it is still running poorly. When I put the fuel pressure gauge on it, it read 61-62 during start up and then dropped down to 57-59 (pulsates rapidly) after I started it. Any advice would be greatly appreciated. ---
**Author:** ![jesmed1](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/jesmed1/32/2097_2.png) [@jesmed1](https://community.cartalk.com/u/jesmed1)\ **Post date:** [October 10, 2013, 7:25pm UTC](https://community.cartalk.com/t/99-chevy-suburban-5-7l-wont-accelerate/81730/2 "2013-10-10T19:25:45Z")
With that many miles, maybe you have the beginnings of a plugged catalytic converter? A plugged converter results in slowly losing engine power over time, and eventually the vehicle can’t even get up to highway speed. ---
**Author:** ![circuitsmith](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/circuitsmith/32/40376_2.png) [@circuitsmith](https://community.cartalk.com/u/circuitsmith)\ **Post date:** [October 10, 2013, 8:52pm UTC](https://community.cartalk.com/t/99-chevy-suburban-5-7l-wont-accelerate/81730/3 "2013-10-10T20:52:09Z")
I would also do a compression test and clean the MAF sensor.