# Car noise from underneath , is it my fuel pump or cat? Just had some major engine work done, so sad **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [May 26, 2012, 7:04pm UTC](https://community.cartalk.com/t/car-noise-from-underneath-is-it-my-fuel-pump-or-cat-just-had-some-major-engine-work-done-so-sad/72657 "2012-05-26T19:04:28Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![EatMyDust](https://avatars.discourse-cdn.com/v4/letter/e/bb73d2/32.png) [@EatMyDust](https://community.cartalk.com/u/EatMyDust)\ **Post date:** [May 26, 2012, 7:04pm UTC](https://community.cartalk.com/t/car-noise-from-underneath-is-it-my-fuel-pump-or-cat-just-had-some-major-engine-work-done-so-sad/72657/1 "2012-05-26T19:04:28Z")
I just got my car back I had some major engine work done, gaskets and remachined a couple heads + some other stuff, ~$2000 worth & I have had the car for about an entire week and now it is making some horrible noise from the underneath I am guessing exhaust system. I have not taken it back to the engine shop b/c it just started yesterday and they far away and not open until Tuesday. I put a video on youtube and someone told me it sounds like my fuel pump. I will upload here for you to look at. I have had fuel pump failure before and I never heard a noise like this. I suspect another costly repair of a failed component but I am debating if I should go somewhere else today to get it diagnosed then go back to the first place that I just spent all the money are or what. I don’t know what to do but have you seen the old poster that says “hit any key to continue” and the guy is standing there about to take a sledgehammer to his computer. I feel a little like that and also very sad about this situation. Here is a video of the current noise: [http://youtu.be/LB2rUimZXvg](http://youtu.be/LB2rUimZXvg) Here is a video of my post engine repair you can see all the gasket sealer that was used: [http://youtu.be/CgHyW1f-Wcw](http://youtu.be/CgHyW1f-Wcw) ---
**Author:** ![UncleTurbo](https://avatars.discourse-cdn.com/v4/letter/u/e9a140/32.png) [@UncleTurbo](https://community.cartalk.com/u/UncleTurbo)\ **Post date:** [May 26, 2012, 7:31pm UTC](https://community.cartalk.com/t/car-noise-from-underneath-is-it-my-fuel-pump-or-cat-just-had-some-major-engine-work-done-so-sad/72657/2 "2012-05-26T19:31:32Z")
Sorry, but I couldn’t make out anything from the audio. Just a lot of noise and no idea how it differs from “normal” sounds the car makes. Maybe someone else can help. What is the year, model, and motor in the car? ---
**Author:** ![EatMyDust](https://avatars.discourse-cdn.com/v4/letter/e/bb73d2/32.png) [@EatMyDust](https://community.cartalk.com/u/EatMyDust)\ **Post date:** [May 26, 2012, 9:40pm UTC](https://community.cartalk.com/t/car-noise-from-underneath-is-it-my-fuel-pump-or-cat-just-had-some-major-engine-work-done-so-sad/72657/3 "2012-05-26T21:40:38Z")
Ah its ok I dont think I was imaging the noise based on what I am used to hearing but it did not do it today when I was driving so I will keep an eye on it and if it gets worse or returns I will go back to the engine shop. It is a Pontiac Grand AM GT 3.4L & it seems to be running great now except my engine temp is a little fluctuating. It holds 200 then after 15-20 mins of driving it is goes up between 210-230 but it does not seem to go higher than that. I am not using dexcool coolant though I am using the cheap brown watery looking stuff the shop put in that is generic for all cars, do you think that matters really?