So I've noticed that when I take my car up over hills and mountains, it will usually pull ~2700RPM, but when I keep a steady foot on the pedal, the engine seems to lag for a bit and then speed back up. It only does it in really small increments, but when I hit ~2700RPM, it will hold that for a period of time, then it will revv down without me changing pressure on the pedal to about 2600RPM, and then after a while it will revv back up.

I've never had any problems with it going up hill, like any funny noises or anything. Its never stalled up a hill or died, its just done this. And its been doing it for a while, and its kinda worrying me now after I just got the car back after not having it for almost a month.

 

If you're foot isn't changing position, I'd almost call it normal, with steep hills. Next time you're on one of these hills, watch the speedo. The speed should drop, which will lag the engine, until the trans and ECM decide enough is enough and unlock the torque converter, at which point, the engine speed will come up to about 2700 RPM or more (depending on vehicle speed, of course). Then the TCC will lock back up again down the other side of the hill because there isn't a need for additional power, and the cycle will repeat.

Also, how close is your tach to the actual engine speed? There are a lot that are off.

If you're really worried about it, I'd start with checking the ignition timing, even though you just got it back from the dealer. I take it the new harness is working for you?

 

Hell yeah that new harness is working!

I know the TCC will make the engine do that, but all this is happening when the TCC is unlocked, so its not trying to lock back up up the hill, I usually don't let it if its already come unlocked until I make it to the top of the hill.

The tack is wayyy off, I still need to send you my money order for the tach that you said you'd sell me if you still have it and everything. But I know how bad its off and by what factor so I can always calculate the actual engine speed based on what the tach tries to tell me it is. Multiply the tach speed by .6674 to get the real engine speed.

As far as I know the ignition timing should be good, and its always done this for me as long as I've had it, even before my last visit to the car vet. Since my problem was ignition, then they should have checked everything with the ignition system, which I hope they did. It seems to me like somethings wrong with the fuel system or something that makes it "pulse" or surge after its been under a heavy load for so long.

The problem with that is that it only does it when I'm going up hills and over mountains, and not when I'm just racing around on a flat surface. And thats the thing that gets me about it!

 

how steep?

Steep enough n long enough to cause oiling problems?

 

I'm not sure, but that crossed my mind too.

http://www.mapmyride.com/route/us/pa...27925660640098

If you click the show elevation it will show you just how steep it is. This is one of the hills it always does it on.

 

I don't like the few step over passes I go up, let alone ones like that that go on and on.

I can see oil poling in the back maybe, it then reaches and over flow point, spills back down to the pan and you gain a 100rpm, start to pool again n ya lose 100rpm till it spills over agian.

Id run your oil so it reads full on the dipstick when running, which will be 1/2 a quart over, which is fine, I run all mine like that.

I like my pan full of oil when running with oil in the top end.

 

I'll put the rest of the fill up jug that I got in it and see if that solves it. I thought a while back that it was an oiling issue, but I don't know any better haha. And I started to think that since I've had minor fuel system problems and major electrical problems that it was either one of those two.

 

not gonna say it will solve it but with steep long grades like that, a bit more sure wont hurt.

That or just move

Flat as far as you can see here.

 

Haha I don't think I could, I love living in a valley being surrounded by the mountains like I am here. Its un-natural for me to look and not see mountains on either side of me. It was too weird when I was in California for a while. I couldn't wait to get back into the Appalachians!

 

If you ever build an engine, use 4x4 tricks for your steep grade oiling so youcan breath easy. Over sized pan, sweeping picks ups, oil routing mods to feed it to places that get it to slow naturaly on a grade...............

 

I've been debating on rebulding this engine kinda lightly, just small mods, not something like a hybrid, just taking it all down, cleaning everything up, new bolts, gaskets, replace anything thats worn, as many performance parts as I can get my hands on, and just putting it all back together. A friend of mine does this all the time, right now hes working on his new Mustang that he just blew up haha, so I know where to go for help.