Thanks for the information of how-to.....
I am planning on doing it tomorrow hopefully.
The 1991 Lex LS400 has 174,800 mi.
I already change the first fuel filter on the driver side on 6/28/06. I blow into the old fuel filter and black crud came out.
Well, here is my problem: I was going home on 520 west and I was accelerating hard as the sweet Lex hums it's beautiful quiet engine to big rpms. All of a sudden around the last corner. It's a long "S" corner hitting the last part around 65m.p.h. coming out of 2nd gear into 3rd after hitting 6200rpm with ECT pwr mode on. All of a sudden it lost power as I hold the throttle to the floor. The temperature in WA is 92, As soon I gain control of throttle by releasing the pedal to close I immediately push down on the throttle and ease the girl at a cruising rpm of 2 grand at 60m.p.h. I add more throttle and it accelrate just fine to the point where it hit the 4000rpm - 6200rpm scale and the Lex suddenly "Lost Power" and it feels and hears like it hit the rev limiter if you were to do that. As soon as you hit 4grand it starts the "Lost of Power" 3500rpms drives normal. I lost power and speed quickly.I check the oil, tranny and it check o.k. Just for safety maintainence. Then my mechanic said, it wouldn't be a bad idea to check the fuel filter. Since it hadn't been change since I own the Lex. 3 1/2 yrs. At first I thought it was bad gas in the tank. I first put redline fuel system cleaner. Didn't seem to fix the problem but it may had help it. No, it's too late by then...
So, after I change the first fuel filter I put the brand new Wix filter in the Lex. (reminder it's the driver side fuel filter) test the Lex. Same problem occur "Lost Power" same range 4k - 6200 rpm.
One more thing I took the car to the local Chevron station to a tech. mechanic he said it was a unusual problem meaning more than just fuel filter problem? I said there's should be more testing. But I won't do it until after changing the 2nd fuel filter. I will let you all know how the process went of taking the 2nd fuel filter.
That's my "Lost of Power" story problem....Any suggestions or ideas that would else cause the Lex to lost power in the power band range please add reply.
Thanks
Paul