Thread: Slight hesitation while revving

My wifes car 01 bonneville 119K miles has a slight hesitation when i rev it up under the hood. I did a scan with torque and while driving i was getting 8* of KR and my ft's were around 11 or so. Fuel pressure seems good at idle but i can't check it while driving. Iridium spark plugs in it that i'll be changing soon and i'll change the fuel filter too just to be safe. It's really doggy too. I'm not sure if i'm just used to driving my gtp or what but it's dog piss slow. No codes are thrown at all either. Any help would be appreciated.

figure out why the fuel trims are at 11. If thats long term, you got a vacuum leak.

Clean the TB?

This weekend I'm gonna clean the tb, change fuel filter, and change plugs. I couldn't find a vacuum leak anywhere but there still could be one.

A Bonneville what?

SE or SLE - Yeah..understandable it's slow and doggy
SSEi - Get on that son! , extend your fpr hose and go for a drive. I did.

Check that front trans mount, it's marshmellow has probably squished and puked. The programming in a Bonne should be a touch smoother than a GTP, but overall it's the same thing with different body panels and an extra couple hundred pounds.

It's an se bill. NA ftl

I thought the front mount moved quite a bit.

The front mount looks fine but I can't really tell because of the metal around it. How do I tell if it's bad?

I pulled the tb today and it was really clean inside so I threw it back on and checked the uim bolts and some were kinda loose so i tightened them up and it wasn't hesitating while revving anymore then I got to looking and 2 vacuum lines were split so I wrapped them in electrical tape and it seemed a lot better. I took it for a drive and it pulls harder now but the ltft's are in the 10's ish at wot and the stft is at 0. Also i'm still getting up to 6* of KR at WOT. Gonna seafoam it later and see if it makes a difference.