It usually happens when I haven't used my car in like a day or so. Sometimes like 5 hours later. I'll start my car, for the most part its runnin fine. I'll put it into gear, whether its D or R, doesn't matter. I'll start to push the gas, right as the car begins to move, it bogs down almost to shutting off, then almost sputters, then runs fine. But I have to give it more gas, so it doesn't stall. It happens every so often. I still haven't gotten tuneup yet, but I will don't worry... but I wanna know why it would come so close to stalling like that??...

BTW.. my rearend makes so much noise, when I turn, time for new fluid I suppose? What kind?

 

Give the throttle body a good cleaning. You'll probably need to clean the IAC motor which keeps your car running when you let off the gas. Although, I had a similar problem just off idle with stumbling and it turned out to be my EGR valve.

 

Get the tune-up, sounds like ya could use one..

 

I'll second the throttle body and IAC cleaning. You may find that you need to readjust the throttle minimum air position and TPS voltage after the cleaning, which only means that you did a thorough job of cleaning. Once you've done that, don't stop there - it's MAINTENANCE time! Remove and clean/regap or replace the spark plugs. Test the spark plug wires. Remove the distributor cap and inspect the cap and rotor. Replace as necessary. Replace the air filter (or clean your K&N element). Replace the fuel filter if it hasn't been done within 30,000 miles. Clean the battery terminals. Change the transmission oil and screen if you're at 30,000 miles on that, too. And if the cooling system hasn't been flushed in the last three years, you're on borrowed time.

As for the differential, if you have 2.77:1 gears, you have a Borg rear end. If you haven't changed the gear oil in the last 30,000 miles you're WELL overdue. Get three quarts of 75W80 synthetic gear oil and a tube of limited slip additive. The additive must meet the GM 1052358 specification.

Contrary to what some may believe, even if you use synthetic gear oil you need to use the posi additive.

Incidentally, all of this is just a recommendation. You don't HAVE to do any of it. You could chose not to and just save your money for lots of new parts....

 

Vader, are we suppose to use synthetic gear oil. Or is it like synthetic engine oil, where it can open up leaks and other bad stuff. How come 75W80? I'm not keen on gear oil, fill me in. Thanks.