when i drive and am on 4 rpm the gas just stops and slows down to like 3 rpm then the gas come on it just started to do it like 2 days ago can some one help me

 

I don't necessarily understand you.

Do you mean that the engine cuts out at 4,000 rpm and does not recover until 3,000 RPM?

I would guess that you have a fault code (is your check engine light on?)

Otherwise, more information will help:

What year is the car?

How much throttle are you giving it?

Does the Check Engine Light come on while running?

Does the Check Engine Light come on with only the ky on, engine not running?

 

its a 87 gxl and when im driving it and i give it gas and it go up to 4000 rpm the gas stop but the car is still on then when i give it gas it will pop then go and then when it gets to 3000 rpm the gas come back on

 

Your second post makes no more sense than the first one. If you push the gas pedal to the floor, it makes it to 4k RPM, then stumbles and tries to die until it catches itself by about 3k RPM?

Maybe your secondary fuel injectors are unplugged/have corroded connectors? 3.8k RPM is where primary injectors have their duty cycle cut in half, and the secondaries come on. If they don't work, you basically will get a fuel cut at 3.8k.

It could just be a seriously plugged cat too I guess. Although that usually feels like the car has no power at high RPMs, but doesn't cause it to almost stall.

 

yea i think its the injectors because i took them out and put them back in then it started to do it at 2 rpm then i turn it off and it was fine then i drove it and it started to do it at 4 rpm then i took it down to 6 and the same thing happen

 

You took it 'down' to 6....what??

You need to be way more specific and start using actual numbers or adding the k to signify thousand.

 

i was in first and second gear when i pass 4000 rpm its feels like no gas is goin in and the car just stop goin but is still on then drop to like 3000 rpm and then gas come back on but some 1 told its the fuel pump about to go so i think that wat it is