Weird Problem with my S14 Please Help!

[N1smoDrift]

KA24DE 1996. 150,000 miles on it.

Alright my car was pretty much running fine up until last night.

My car starts up fine, this morning i reversed it out of my driveway onto the street i put it in 1st gave it some gas and it died i figured maybe i didnt give it enough gas and tried again with the same result.

This takes me back to last night i was pretty much driving the same way i always do i speed from time to time and then i make a left turn from a stop and when i press on my gas my check engine light flashes and my rpm gauge kinda flickers or jumps up and down, ive had a CEL on for a while now, and the only things that were wrong with it were crankshaft position sensor(which i changed) and an 02 sensor which i havent changed yet but either way it was running fine like that for a few months.

So back to this morning the only way it doesnt die when i drive, is if i rev up to about 2000 maybe 2500 rpms this is really weird to me considering i havent done anything to mess with the car and just the plain fact that it was running fine before, the car has also been having some back fires lately not loud but i can hear them from inside the car when i shift from1st to 2nd. If anyone has had the same problem or know what the problem is please help. Thank You.

[N1smoDrift]

anyone?

[spooled240]

how has your mileage and power been lately? Sounds like you have to change the O2 sensor, it may have just crapped out on you.

[N1smoDrift]

how has your mileage and power been lately? Sounds like you have to change the O2 sensor, it may have just crapped out on you.

the power has been low since ive changed my clutch and before that i had a header on it, now that the header is gone it feels rly slow to me and the clutch doesnt feel to great either but it works. would the o2 sensor make the car do that when i press the throttle though? its the o2 sensor on the exhaust manifold (i should have specified that). thanks for ur responce please get back to me.

[tctomasc]

it can. You may be out of timing if you put the CAS in wrong. Try retiming. USually a pop means lean, and a gluging pop means rich.

[N1smoDrift]

it can. You may be out of timing if you put the CAS in wrong. Try retiming. USually a pop means lean, and a gluging pop means rich.

whats a CAS?

[spooled240]

a bad 02 sensor can mess with your fuel delivery which can also cause stalling and backfiring issues.

[N1smoDrift]

Alright so i just tried driving it again to get to autozone. its not gona happen lol this sucks it reverses just fine but when i engauge the clutch in 1st and try to go forward the car just wants to die. any suggestions? o2 sensor?

[N1smoDrift]

anyone else's input? im limited on money and i cant afford to buy the wrong part

[driftneil]

did you search??? try the maf

[CRyan]

Well apparently its not something electrical - unless it something coming undone with the forward motion of the vehicle. Look through out the engine bay see if ANY connectors could be loose.

My next assumption would be something with fuel delivery. Stock fuel pump I assume, find out if it's ever been changed if so by whom.

Also, the O2 sensor being bad could be throwing your cars tune completely off. You have to know that the O2 sensor is relaying information to the ECU, along with the MAF sensor. If these aren't working accordingly, you could have a problem.

With fuel injected engines, with an ECU, they rely on information from all sensors that are monitoring the motor as soon as you turn the key to the on position. When one is flawed, the rest begin to work a little bit more different, thus leading to some type of mis-communication to the ECU to tell something else to do something. If that made since.

My own 2 cents - hope it helps.

[N1smoDrift]

did you search??? try the maf

yeah i have searched cant find anything with my exact problems, MAF isnt the problem it would still be drivable ive replaced it before and drivin with a bad one for a few months(a long time ago).

[N1smoDrift]

Well apparently its not something electrical - unless it something coming undone with the forward motion of the vehicle. Look through out the engine bay see if ANY connectors could be loose.

My next assumption would be something with fuel delivery. Stock fuel pump I assume, find out if it's ever been changed if so by whom.

Also, the O2 sensor being bad could be throwing your cars tune completely off. You have to know that the O2 sensor is relaying information to the ECU, along with the MAF sensor. If these aren't working accordingly, you could have a problem.

With fuel injected engines, with an ECU, they rely on information from all sensors that are monitoring the motor as soon as you turn the key to the on position. When one is flawed, the rest begin to work a little bit more different, thus leading to some type of mis-communication to the ECU to tell something else to do something. If that made since.

My own 2 cents - hope it helps.

i dont think it would be the fuel pump, a friend of mine had a bad fuel pump on his s13 and it wouldnt start at all. mine starts and idles fine just doesnt want to go forward in 1st gear. im going to check all of the sensors and i guess i should replace the o2 sensor anyway. thanks any words give me some hope lol

[driftneil]

yeah i have searched cant find anything with my exact problems, MAF isnt the problem it would still be drivable ive replaced it before and drivin with a bad one for a few months(a long time ago).

Then it prob wasn't bad, a blown maf doesnt let your car idle over 2500 or so.

[N1smoDrift]

Then it prob wasn't bad, a blown maf doesnt let your car idle over 2500 or so.

yes it was. I checked my ecu with a scanner, and once I replaced it my car ran fine? And as i said my car idles fine right now it just wants to die wen i go forward in 1st so a MAF wouldnt be the problem and you just proved it.

[spooled240]

hmmm a bad O2 sensor would mess with you idle if I remember correctly as it controls the lower rpm range.

When you take off in first, does it take off fine then shut off? Tell us all the details, that will only help

[N1smoDrift]

hmmm a bad O2 sensor would mess with you idle if I remember correctly as it controls the lower rpm range.

When you take off in first, does it take off fine then shut off? Tell us all the details, that will only help

Idk my idle was fine, I fixed it, it was a bad o2 sensor. Thanks for the help.