First timer here. I have an 87 Trans Am. No mods, everything is stock. I've had the car for 8 years. But just before I parked her last year, she starting boggin' out when I mashed on the gas. No matter what gear, what rpm, when I floor it hard, it sounds like it's choking, it will do this for about 2-3 seconds and then begin to accelerate. While it's accelerating, its fine and smooth.

Any ideas?

Thanks

 

welcome to the boards

my car bogged like crazy...it ended up being the fuel pump...im sure someone will jump in and tell u how to test it, everyones cool around here.

-Leah

 

Maybe
fuel
filter.

 

yeah dude i would check the fuel filter. Mine did the same thing in second gear and i had to let up the gas and shift up. Now when i changed it my car screams in every gear and goes forever, it was like a totally different car. Funny thing was that this was happening for like 1 year until i finally realized to change it.

 

I'll beg to differ. If it was fuel delivery, it would be fine at first and die out as RPMs increase.

Sounds like q-jet bog to me (I assume it's an LG4 with a carb, VIN code H - you never said). That is caused by the secondary "air valve", or AV, opening too quickly. Two things control that, the choke pull-off (believe it or not - it also has a link to the AV), and the AV tension spring. Since this is something that developed over time, rather than something it's always done, I'd suspect your choke pull-off has died. Not at all uncommon, and replacements are commonly available, cheap.

Read the Tech Article on q-jet performance. It tells how to adjust the AV tension.

But, you need both. If you try to adjust it with only one (pull-off or AV tension), it'll never work right.