Alright, a little while back my car started doing something odd, and I'll do my best to describe it. First, the car is a 2001 with a 2200 and Getrag 5-speed.
Anyway, after a recent oil change the car started running really bad if I happened to be running 1 gear to high. So, if I'm in 3rd gear at 20, 4th at 30 or 5th at 40, for example, and I give it a little gas the car will start to buck and surge and every once in awhile you'll hear a slight popping noise from under the hood. The sound can best be described as a mini-backfire. It's not horribly loud, and it's not repetitive, just every now and again.
Over time the problem has gotten a little worse, and it happens now under heavy acceleration. When running through the gears at WOT, the car will occasionally surge/lag in the middle of 2nd-5th gears...never in 1st. It also only happens during heavy acceleration. Light, day to day driving will not cause these issues.
The air filter, oil, plugs and wires, are all replaced. I also ran engine restore and Gumout fuel system cleaner just to see if it would help, and neither have. I especially made sure to do another oil change, just in case that was the cause. Fuel filter was changed about 40k ago, about when I got my struts put on.
I'm pretty sure it's a fuel issue, but I thought I'd throw this out here and see if anyone has any input on the situation. Thanks in advance.
Edit: I'm at 113000 miles roughly.
Dude, it's time for a timing chain & tensioner. This is common on the 2.2/2200 around your mileage, and the problem you're having would occur on any pushrod engine. Esspecially one with separate cam & crank sensors since the cam tone-ring helps synch the injectors, and yours is falling behind. Plus, doing this now will save you alot of engine repair haedaches and cost latter. Any LN2 owner or buider will atest to this.
Go beyond the "bolt-on".
Fixed. Had nothing to do with the timing chain/tensioner though. Simply busted out the electric contact cleaner and cleaned every sensor under the hood. Car runs great now.
wow.. mysterious fix. anyway if it was the timing chain you would have heard it. and so would the rest of your neighbourhood.
Well, I must've spoken too soon. It was fine yesterday, today it's back to the usual surging, popping, bucking, etc.
The only surefire way to recreate it is to get up to 40mph, put the car in fifth, and then push the gas down about halfway to WOT.
Like I said before, it's very easy to drive the car and never experience this, because the gear range isn't practical for daily driving (or at least accelerating), but it has never done it before, so I'm still working on figuring it out.
funny im haing the same problem with my cr but i have a 98 z24 twin cam i also pulled the cover off for my plugs and i found oil quite a bit of it, like it had been fresh but like im still full of oil, so if any one is good at this send somthin my way please
