Believe513

This is my first post so don't b too harsh. Well I have a turbo lude n my check engine light came on. I still.drive it (but don't race it) n it doesn't run the same. I finally did the evi checking today n found out the sci wire has been disconnected. Idk how or when. Has my car been damaged since it hasn't been connected for almost a year now? And I have two codes popping up. 3 and 41. MAP sensor n O2 sensor. What do I do now?

Believe513

I meant ecu, not sci or evi. Sry

acidburn2k2

start by fixing the sensors and see what it does, there is a light on for a reason.

Believe513

Yea but is it the sensor messing up? I know the o2 sensor was on cuz my downpipe broke but I got that fixed two days ago n the code jus stayed in the ecu. But Idk about the MAP sensor. Like what do I. Look for? I don't kno how to adjust my air fuel ratio so that its fixed. I have an apexi safc but im scared to mess with it n lock up my engine.

acidburn2k2

Im just gonna ask you, you bought this car boosted, right? or had a shop do it for you?

IIRC, 94 should have OBD plug that you can go to any autozone/advance and have the codes cleared. Get the codes cleared and see if the CEL comes on again. If it does, pull the codes again and fix whatever is necessary. You might need to replace your sensors

Believe513

Haha yes this was my first car. I got it when I was 17. I've learned alot from it but im.no mechanic when it comes to something turbo charged. Shyt, most mechanics here don't even want to touch it cuz they don't know. How do I clear the codes? How do I know I cleared them? I disconnected the clock fuse for a while but the codes are still there even before I turn the car on.

Believe513

Autozone said my car was too old for their obd. Shops said the same thing. Its pulling up o2 and map sensor. O2 sensor I can fix sense its exhaust issues but the map sensor is my problem. Id like to do what you said but Idk if the codes were actually cleared when I pulled the fuse.

acidburn2k2

I'm just saying, why don't you just replace your MAP sensor? and fix your O2 Sensor?

Believe513

So I bought both sensors. 400 bucks. They come in friday. If that doesn't work, ur gonna get it!!!! Lo

dshaw450

do you know how to check your codes? bc that sure would help you a lot lol and im having problems with my egr valve this is the 2nd time so maybe its that but im not sure the codes help a lot

Believe513

Okay so I bought both sensors. Put them on, erased the codes, turned the car on, waited a lil and then it turned off. I tried turning it back on but nothing. I can't even hear my fuel pump turn on and my safc doesn't turn on either!!!! New fuel pump? Or new relay? Idk!