Just a few issues!!!

[tdykes1234]

Hey guys, I have a few questions that I can't seem to find the answers to. First, I have a '90 Laser RS Turbo FWD, 96K original miles, all maintainence has been kept. My upgrades are now a K&N Air Filter (no air can), "Semi-Hacked" MAS, Intake Tube, Forge Motorsports BOV (recirc), Autometer Boost Gauge, Manual Boost Controller (15psi), & a new alternator. Now starts the questions...

1. Why does my oil pressure gauge read low when coming to a stop (oil full)?

2. Why, at 15lbs. of boost, do I feel I have less power than at the factory settings?

3. Sometimes during a 3rd gear pull, the car will act as if it slips out of gear...the rpms and boost will rise, but the car doesn't go w/it ?

4. I just replaced the alternator & my battery is good, should my headlights brighten when the accelerator is touched?

Thanks for the help guys!!!

 

[fantom73088]

What kind of oil are you running in your engine the vescosity can affect oil pressure. If the lights brighten when the accelerator is pressed you may have excessive load some where or a bad ground most likely a ground unless the alternator is week. For the rpm's rising without the car accelerating as it should you may have a bad clutch. And I'm assuming you are using the stock turbo you may be running out of its efficiency on top end and feels as if you are loosing a lot of power up top, I believe you should have a 14b turbo and to gain a little top end you could port the exhaust inlet of the housing to get some more flow out of it.

Sorry the reply is so choppy and some what incoherent I am responding from my phone. Hope this info helps.

 

[WhiteVoid]

The fact that your boost and rpm go up with no increase in speed points to a boost leak. I had the same problem and it was as simple as a coupling not being tight enough. As for your headlights getting brighter, it sounds like your clutch is dragging. Mine did the same thing and all it took to fix it was adjusting the clutch pedal.

 

[joescool2008]

1. Pump is spinning slower at lower rpm which gives you less pressure. Mine usually gets about 1/8th way from low when I idle. At 2500+ it puts me back into the normal bracket. Really only need like 11psi for idle pressure. Some people get around 20psi on a new motor.
2. Could be pulling timing from knock caused by lack of fuel. Rewire fuel pump may help.
3. Clutch may be slipping or boost leak.
4. My headlights don't brighten when I hit the gas in my 91 gsx.

 

[tdykes1234]

1. I'm running 10W-30 Full Synthetic

2. How can a boost leak cause a car to feel like its coming out of gear? It pulls 15psi in all gears, but sometimes when I go from 2nd-3rd, at about 4500rpm...it's like my rps race up but the car loses momentum?

1. I'm running 10W-30 Full Synthetic

2. How can a boost leak cause a car to feel like its coming out of gear? It pulls 15psi in all gears, but sometimes when I go from 2nd-3rd, at about 4500rpm...it's like my rps race up but the car loses momentum?

 

[pauleyman]

If RPMS rise but car doesn't move the clutch is slipping. You can probably smell it too.

 

[alumascoupe]

Is the oil sending unit the original, how are the connections at the wires (corroded ?) Check your idle. If your idle is too low, oil pressure and alternator voltage will be too.
I second the clutch slipping, to test find the biggest hill possible, climb it in a taller gear, then floor it... symptoms are nearly exactly as you describe, and generally gets worse nearing highway speeds where aerodynamic drag starts coming into play.

 

[tdykes1234]

That makes more sense, how hard is it to replace a clutch on a FWD? Oh & while I'm asking ?'s, is it possible to tune the car to run a non-recalculated BOV w/o running sooooo rich?