toms93lx

I bought a 93 lx a month ago and this is what i have done so far....
1) cap and rotor
2) plugs and wires
3) msd coil
4) tranny flush
5) radiator flush
6) set timing 12-14
7) set TPS to .99
8) cleaned MAF sensor
9) cleaned that air idler bypass thing

thats about it .....i run 93 in it also

the problem is it doesnt seem to have much power. it is an automatic but still. i get not check engine lights. the only light i get is the air bag light and dont know why. I ran codes on it and the first test (just key on and not running) comes up good. but when i run the test when you run the car i get codes 41 and 91. will the leaned condition make the car run like **** and i cant keep the idle low wants to idle at 2000 rpm. no ,atter what i do i cant get it to idle under 1000 rpm. even with the set srew backed all the way and not even touching the throttle arm.

right now i think that my 2000 318 durango could out run it. when i had it at the shop getting the work from above done on it he said it felt like it had a de-tune chip in it.....is that possible?

so what should i do......change the O2's (i get no check engine light)
or could it be the EGR?

open for ideas.....................

mjr46

no you have no detune chip in it, lol.........first thing I'd do since o'2s are picking up a lean condition is make sure ther eisn't a restriction in the fuel filter and or replace it, and check fuel pressure at idle and under a load/while driving it, = tape gauge to the windshield.

wildcobrar

I had a stock 5.0 lay down on me too. Did a fuel pressure check after doing the tune up.(plugs,wires,fuel filter, air filter, timing0 and found that the stock fuel pressure regulator went south. Spring inside got coroded and it forced the fuel pressure to go low. Now lean condition was noticed by the o2 sensors/computer but the fuel presure gauge never lied.

Car was a whole new deal with an adjustable regulator on it.

Joe

wildcobrar

I had a stock 5.0 lay down on me too. Did a fuel pressure check after doing the tune up.(plugs,wires,fuel filter, air filter, timing0 and found that the stock fuel pressure regulator went south. Spring inside got coroded and it forced the fuel pressure to go low. Now lean condition was noticed by the o2 sensors/computer but the fuel presure gauge never lied.

Car was a whole new deal with an adjustable regulator on it.

Joe

toms93lx

yea i changed it .........where is the regulator

mudvayne1

Air bag light on means its been wrecked I'd say. The passenger airbag in mine was deployed and they just cut the bag out and velcroed the covers back together. The light stays on.