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I drive a Honda Civic 1998 Dx. So I recently replaced the Map sensor because I had a p0108 code. After replacing the CEL go away.
I'm trying to sell my car, so I had a couple of dudes come and test the car. When the A/C is on the engine sounds pretty "normal" but when it's off it makes this weird vacuum noise?( I'm not sure how to explain it). So one of the guys wanted to check was making it. He kept messing with the throttle opening. After the 4th or 5th time of revving my engine my CEL turned on and my car turned off.
I was able to turn it back on but only drove 20 feet before it turned off again. I was able to turn it back on (enough to get to my house which was only a block away)
There I noticed every time I stepped on the gas pedal my engine shakes violently!
When I plugged in my scanner I got code p0170 and p0171.
​​​​​​My car has been sitting for a long time so it's not in the best condition but it wasn't doing that prior to these guys messing with it.
Any help would be appreciate it!

 
Rep Power: 222

Check to see if something chewed the wires while the car was sitting

 
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Can anyone help or any suggestion i am having the same code P0171 with my si, installed new injectors full tune up and new oxygen sensor i have freeze frame data if anyone is good with that stuff,i am wondering if my stock 20yr fuel pump might be on the way out or if it is even anything fuel related at all

 
Rep Power: 222

What brand was the o2 sensor?

 
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Can anyone help or any suggestion i am having code P0171 come up with my si, installed new injectors full tune up and new oxygen sensor i have freeze frame data if anyone is good with that stuff,i am wondering if my stock 20yr fuel pump might be on the way out, car drives fine with and without the light on no difference in idle



this was all at idle pretty much

 
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had the same code prior to sensor but was a denso sensor ? maybe try another one?

 
Rep Power: 222

Did you buy it online? How much was it?

 
Rep Power: 222

And don't create/respond to multiple threads with the same question

 
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bought it in store

 
Rep Power: 224

Long term fuel trim of 18%, short term shows 25%. It's adding a bunch of fuel because the sensor is saying it's lean. Does the exhaust smell like it's running really rich?

 
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not at all drives and smells fine minus a little black smoke very little,and the thing is once the car is been driving for a few hours the light would not come on it usually does within the first 30 min of driving