Join Date: May 2012
Location: Big Rapids, MI - Ferris State University
Coyner Jr is offline
Re: Surging During Acceleration
I have no cold start issues, starts every time.
I did learn a couple of interesting facts about this particular motor, which actually make sense. If my fuel pump was even somewhat close to not being perfectly perfect, it wouldn't start at all in the cold. It would just turn over and over and over and over.
The other thing I learned is that when Chevrolet was making this motor in the late 90's, they basically made it so that it "surges" when it's in overdrive. They did this to save fuel, because, for whatever reason, we needed to save fuel in the 90's. While it's in overdrive, the computer basically tells the transfer case to go into lock up, and that's what causes the surging. If I downshifted into 3rd gear and accelerated, it would prevent the transfer case from locking up and it wouldn't surge. Most full size trucks have those towing buttons on them, and those prevent the transfer case from locking up like mine does. So, shifting mine into 3rd does the same thing as a tow button would do. And this does make sense to me because it only surges occasionally. Most of the time, but sometimes it runs like a million bucks. A few years back, my dad had a 2000 ZR2 Chevrolet and he said his does the same thing mine did. Trucks with my engine and transmission with a year close to mine all do this, as a fuel conserving thing like I said earlier. And if I were to unplug the transfer case sensor to make it never surge again, it would apparently wreck my fuel mileage..
So as for what's being done to my truck... it is getting plugs, wires, cap, rotor and a PCV valve, and then I'll get it back. My godfather (who's during the work) doubts that will clear the surging, but I suppose we'll just have to wait and find out!
2000 Chevrolet S-10
Ex. Cab | 4.3L "W" | Auto | 4x4 | 3.73 Posi-Traction
Dual Exit Exhaust w/Flowmaster Super 44 Muffler | eBay "Cold" Air Intake
Hankook Dynapro's | U.S. Wheel 844's
PCMForLess Custom Tune
-Sold: 1994 S-10 | Std. Cab | 2.2L | 5spd. | 4:10's
I once purposely did a rolling 35-70mph burnout past a prius just because it had some smart ass eco loving bumper sticker on it.