3.4L DOHC performance rebuild

[Anonymous]

Mine tends to fluctuate with the idle. Course I am using an auto chip in it I found that raising my idle up to 1000 solved a lot of the surging and stumbling.

They did that to mine too-it holds at 1200 until the car fully stops, then it drops to 800.

Bowtiekid was surprised at how well mine idled, he said that "all 5-speeds do it, Ben's, mine, and John's"

[blk92z34getrag]

Mine is pretty erratic too. Hols around 1200 till I stop, then to about 800 and bogs pretty bad when the I turn on the signals.

[Anonymous]

Mine is pretty erratic too. Hols around 1200 till I stop, then to about 800 and bogs pretty bad when the I turn on the signals.

Also characteristic of a getrag, the signals kill it. That is so weird! I no longer use them because they make it die.

[DEI37]

You ought to see how much mine stalls out. It's a 1992 GP SE with the 3.4 DOHC and an auto, and around corners mainly, the thing dies out. It gets worse as the fuel level drops. Haven't gotten ambitious enough to check fuel pressure, but I'm suspecting a bad fuel pump in my case. Intake gaskets are fine, and I don't set any SES light.

[Anonymous]

This board is weird!!!

Mine does the same, when slowing around a corner. I also thought it may be fuel, maybe low fuel pressure. But I do not know.

It is not intake gaskets though, for mine are new.

[jmgtp]

Mine lopes like hell with the different cam timing but it never stalls, slowing to idle, turning, nope. Although I do admit after about 5-6 minutes of idle only (without ever touching the throttle during that period) the lope gets really really bad and has on a few occassions stalled then. But usually I'm not idling for that long, and if I am a blip of the throttle every few minutes is all it takes to smooth things out. This was all after the modded cam timing, before then it could idle indefinetly.

2 weeks ago I went for a ride in 2 other LQ1 vehicles... I forgot how smooth a stock cam timing idle is. I used to think mine wasnt that bad, but in comparison... damn! When the idle gets real lopey (like I described above after 5+ mins) if you stand 10 feet behind the car you can actually see the whole vehicle surging up and down with the engine. lol. But traffic light to light the idle isnt bad at all, you can hear it and feel it a little but its nothing like what it does after 5 mins... turns into a whole different beast then. Its almost as if after 5 mins the idle drops even lower. I wonder what the original topic of this thread was? beats me, i have no clue. lol

[pendan]

Did you ever think maybe its the design of the gas tank? I know our '90 Olds eighty eight did that when comming to a stop on a downsloped hill it always stalled and the gas gauge would go to empty if sitting for a while.

If its so common in your cars, it must be something from the factory that causes it, so dont rule out the gas tank, that was our problem.

[SappySE107]

When I replaced the gas tank in my GP, it had 1 less baffle. This would cause it to lose power on sharp turns if i was in the red. It never stalled though.

[RidgeRunner]

My tank won't pick up much below 1/4 tank under acceleration in any direction at all. It gets herky-jerky like it's running out of gas.

[Anonymous]

My tank won't pick up much below 1/4 tank under acceleration in any direction at all. It gets herky-jerky like it's running out of gas.

My tank only does that around corners, and it embarrasses the SHIAT outta me. I hate it. So I have to try and keep it above 1/4 tank.

[blk92z34getrag]

Speaking of gas tanks (sorry we sort of killed this thread) how hard is it to replace a fuel sender? Because the one in my mom's Euro just took a crap.

[Juglenaut]

If you are going to replace the Fuel sender might as well get a 50-70 dollar fuel pump to while you are at it.

The fuel sender is mounted inside the tank like the pump and it is just as hard to replace too as to it because the sender and fuel pump comes out the same hole in one piece.

[93gtpdohc]

my car use to do the same thing when going around coners slow, or when you were in stop and go traffic, i never got a ses light, all it was 2 leakin injectors, so i just put 2 brand new ones in and i was good to go again, [/quote]

[pocket-rocket]

2 weeks ago I went for a ride in 2 other LQ1 vehicles... I forgot how smooth a stock cam timing idle is. I used to think mine wasnt that bad, but in comparison... damn!

Ditto. I got used to the smooth stock timing on the 92 over the summer. Then I jumped back in the 91 for the winter. I was like, damn, this thing sounds like ass! Then I rode in a 92 auto 3.4 SE GP. He got on it, and the memories of how bad the auto cars sound like they are going to blow when it shifts came back. I remember Ben telling me when the 91 was an auto that the 5 speed guys shift at 7k when I was asking him to lower the shift points some because I didn't like the way it sounded. I didn't belive him for a while. I took his word for it, and then I got the 5 speed in the car and tried it out myself, lol.

[Anonymous]

Yah I actually shift at 6500, just because with the correct cam timing, the car doesn't pull well past 6500.