My turbo is not on yet, but I've installed my Vortech FMU. Now the car has less power. Is the FMU making the car run richer or something? Just wandering if anyone else has had this problem.

Also, my oil light comes on when the car idles around 700-800 rpm. Checked the oil, its on the max, there is good oil pressure running through. When I installed my feed line I had to strectch the wires for the oil pressure sensor's harness to get it on the sensor. Could I have damaged a wire or the sensor? And, does it matter if the sensor malfunctions? Will it effect anything?

Don't know if it has anything to do with it, but I tee'd off the block, on one end of the tee, it goes into the block, on the other is where the feed line hooks up, and the middle is where I screwed in the sender. After, tightening the tee the hole for the sender was pointing at a downward angle, that why I had to stretch the wires.

Sorry for the long post.

Eric
97 Eclipse GS

1- How do you know your car has less power if you dont have the turbo on? How did you drive the car to notice this?

2- Yes it could matter if you messed up the wires on the oil pressure sender, you may not be getting enough oil now to the turbo, whats your oil pressure reaings at?

-MIKE-

Stroked 2.2L

1- How do you know your car has less power if you dont have the turbo on? How did you drive the car to notice this?

2- Yes it could matter if you messed up the wires on the oil pressure sender, you may not be getting enough oil now to the turbo, whats your oil pressure reaings at?

-MIKE-

Stroked 2.2L

Eric
97 Eclipse GS

Don't mean to be a dick, sorry.

Eric
97 Eclipse GS

On the oil pressure sender question I asked- I used teflon tape on the NPT fittings. Could this be preventing the sender from getting a good enough ground, and therefore making it trigger the oil light. When I idle, it doesnt come on, until the rpms get around 700-800. Then the light flickers, and becomes solid if the rpms go down more, (like when the cooling fan turns on, or the a/c is turned on).

Eric
97 Eclipse GS

-MIKE-

Stroked 2.2L

It doesnt flicker on and off. It comes on, but dim, and the brightness fluctuates. Then if the rpms get a little lower, it is solid.

All thats installed from my kit is the oil lines and the FMU. You can drive a car with those on.

When i searched the forums, one came up where a guy said he ran without one and didnt have any problems except for the light.

Eric
97 Eclipse GS

hmm not sure then, intresting.
im gonna go out on a limb on this one, but maybe because the light comes on and off because the feed line is installed. the sensor may think it doesnt have enough oil pressure or something since some of the oil is go through the feedline, not sure though.

why dont you try taking the feedline off and then starting it again and see if you get the same problem.......

-MIKE-

Stroked 2.2L

What do u think about the FMU question? Could it be making me run too rich and hurt performance?

Eric
97 Eclipse GS

Could I have hooked it up wrong? I ran a fuel line from the fuel return port hard pipe to the IN on the FMU, (fitting on side), and ran a fuel line from the OUT, (center fitting), to the stock FPR.
The vacuum line is from the manifold, so I know its good.

Eric
97 Eclipse GS

I'm 100% sure but I think you have this hooked up wrong.

1995 Eclipse GS - HRC Stage 2 - Retired.
2004 350z Enthusiast / 2008 Nissan Versa SL

Do you have the vac line hooked up? If so, thats why. When you get on it, the fuel pressure will rise and you will run rich cuz your not getting enough air to compensate the fuel. Just an idea, lol. Hope you figure it out.

if your on stock internals and fuel system, besides the FMU, i think your gonna run rich all the time bro...

-MIKE-

Stroked 2.2L

Eric
97 Eclipse GS

about the oil issure, my oil light did the EXACT same thing you are describing. i checked the oil pressure and it was fine, so i installed an oil pressure gauge instead of the sending unit. i figured my sending unit was just bad, or it could have something to do with the turbo. nevertheless, my car is running fine 3 months later, so check your pressure and you should be okay. the fuel issue is interesting, since the fmu shouldnt be kicking in until you install the turbo. good luck

The oil light will come on if it sees less than 4psi of pressure. (I think it's 4--if not, right around there). At idle, since you have the feed line and return line hooked with very little restriction, the sensor is probably reacting to that. I'm assuming when the turbo is in the path, the pressure will rise and the problem will be gone. You said that it's only at idle right?

What is your fuel pressure now that you put the FMU in? Is it too high? My thought would be to throw a gauge on it and see. If it's too high, every time the injector opens, more fuel goes in and it runs rich. You can get a gauge from Summit for cheap. I dunno, just my .02

Brian

Cool, you guys are a lot of help. I'm gonna get a fuel pressure gauge anyways cause I want to monitor my fuel pressure when I put the turbo on. The oil pressure issue is only at idle, but today when I drove it didnt do it once.
I guess the fuel pressure could be higher than normal, i dunno. I have an a/f gauge, it always shows rich, cause our cars run a little rich. But now if i press the gas pedal just a little bit, it goes rich. But we'll see when I put the turbo on this weekend.

LOL, i should have bought the S-FMU or a Cartech FMU, maybe then I wouldnt have this problem.

Eric
97 Eclipse GS

When idling theres vacume. then you step on the gas then is less and that may cause the FMU to raise the pressure.

I eat emo kids for breakfast

1995 Eagle Talon (SOLD)
72' SuperBeetle
72' Standard Beetle
56' Deluxe Beetle

Oh. I thought it would only raise fuel pressure with boost.

I also noticed that after idling for about 10 minutes, my a/f ratio gauge showed all the way (the highest red light) rich and fluctuated between that and the yellow on the rich side. So its definitely running rich. LOL.

Eric
97 Eclipse GS

Your oil line for your turbo is empting out so something with no restrictions. Its like blowing throw a straw, if its open you will blow right throw but if u put your finger on halfway then you get pressure. Since the line is right by the sensor its reading pressure with no restriction. I would sqeeze the line and see if it does it because it will create restriction. BTW stock oil sensors suck