Engine loses power

Did you use what it calls for or an after market universal O2 sensor
if used the universal they may not work well
also check if you have federal or California emission it makes a different too

This guide will help us find it

https://www.2carpros.com/articles/engine-has-low-power-output

Please run down this guide and report back.

I have a honda civic si 1999 1.6 L DOHC in California and I recently changed to better spark plugs, fuel filter, air filter, oil, and oil filter. The car previously had acceleration problems and i thought that this would fix it, but no real difference occured. The car starts accelerating fine in first gear and second gear but in third gear the car just looses some power between 2000-3000 RPM and feels like i can floor it and not speed up. The only thing left that come to mind is the clutch, but i recently got it repaired 2 yrs ago and i do not know what to do.

Replace the ignition cap, rotor and ignition wires.

If the problem is still there, have the ECU scanned, you may have a sensor that is out of parameter.

[quote:745fadddd5="F4I_guy"]Replace the ignition cap, rotor and ignition wires.

If the problem is still there, have the ECU scanned, you may have a sensor that is out of parameter.[/quote:745fadddd5]

Thanks I will def. look into that! about two years ago i had most of the sensors replaced, but i'll look into that as well.

99 civic going up hill loses almost all power and goes about 5mph. Tranny seems to be not shifting correctly also.

is the check engine light on? also, verify that the transmission has fluid at the correct level.

light is on and transmission fluid is correct

1999 honda civic ex code p0420 (auto zone)describes as follows:, air leak at o2 sensor/or bad sensor; vacuum leak; faulty catalytic converter. when in park/or neutral car idles & excellerates normal, but when put in gear there is no power and cannot gain speed past 15 mph. Fuel filter is clear and fuel pump operation allows me to hold back pressure easily w/ a finger. The car's Exhaust is without obstruction. Does this make sence and can you help me?

Yesterday i was driving home about 40-50mph when suddenly i noticed that my speedometer dropped to 0, and afterwards on a stop light when i was accelerating i was having a hard time speeding up from 1st gear to 2nd gear. I was stepping on the gas and RPM says about 2500 to 3000 with no or very little speed on 1st gear trying to make it to 2nd gear. After in second gear all things seems normal with the exception of my speedometer dead. Both happened at the same time, Any thought. Thanks in advance.

you need to get to the bottom of this. you should not drive vehicle until its fixed. your transmission is going into fail safe mode. your speed sensor tells transmission when to shift. if it does not work your transmission does not know when to shift. check your fuse box under drivers side dash. check all fuses. replace it if it is bad. there are a number of things that could cause this, just as simple a a vehicle speed sensor. have it checked out right away. if you keep driving it you will damage transmission. hope this helps. feedback and votes are greatly appreciated.

bought 99 1.4i honda civic today,car seem's to be going great only for it has no power going up hills,,can u help plz

it's only a 1.4! try downshifting to lower gear?

Have a tune-up performed and retest.

last car was 1.4 and could take a mile long hill in 5th gear and be 65mph,,but with the new car which is 1.4 on same hill i be in 3rd gear doing 35mph..have been riped off in past,,so i dont just want to put car into garage and be iped off again,,thanx for help

If the engine is out of time etc, you would have power losses. It could be ignition timing, clogged fuel filter and without any diagnostics, you would not be able to figure out what is wrong.

i have a 99 honda civic ex which i just had the engine, intake manifold, wiring hareness, computer, and my clutch replaced about a month ago. it was working fine until now. my car is idling very low to the point that half the time it dies. when i press on the gas it will hesitate and it also makes a spitting noise. what could this be? please help me!

Hi sessions4,

When the idling speed is too low, you need to clean the throttle body and IAC valve.

shoulda went up hill before you bought it? coulda got it cheaper or moved on?

thanks. but wat could be causeing the spitting noise.

bignob, any word on this? Have you had it scanned for codes or got rid of it?

Hi sessions4,

It is not easy for me to diagnose what the noise is without knowing where it is coming from and the possible cause.

Does it sould like intermittent hissing noise? Maybe like a steam engine train?
Since you have irregular idling, I would suggest checking if the spark plugs are tightened securely.
It could be a leaking valve. It could be improper adjusted belting noise, or compressor clutch engaging/disengaging. The list could go on and on.

the spitting noise sounds like air being shot out of a tube. ive noticed its coming out near the back of the engine to the left. the more i press on the gas the faster and louder it gets.

Rebuilt honda y7 engine and it runs and I can rev it up to a higher rpm and it runs but when I give it gas it bogs down!!!

Hi sessions4,

On top left of engine there is the EGR valve and that is the only thing I can think of that might be the cause of the spitting noise. Maybe the gasket is leaking.

verify timing belt for marks.
make sure fuel pressure is correct.
make sure distributor timing is correct.

did you use stock parts??

Roy

Yes it is stock and timing marks r on and we will check fuel pressure and distributed timing thanks

Is the MIL indicating?

No it is not on

I have a 1999 Honda Civic, 1.6L LX 4door with 92K miles. I drove to work this morning, and everything seemed to be running fine. About two hours later, I had to drive to a meeting, and my car started to idle rough. When I accelerated, the engine still ran rough with a lack of power. It seems like one of the cylinders is not firing, but not sure. I checked and re-gapped the plugs (the gap was very wide on a couple.) Didn't help, so I replaced the plugs. The engine doesn't run as rough, but the problem is still there. The wires look fine, but I checked the resistance anyway...about 2.4 kOhm for the two shorter wires and 3.0 kOhm for the two longer wires. They don't appear to be "leaking" energy, either. I also took off the distributor cap, and it appears to be OK (no crack). The distributor rotor has some wear on it. I was going to replace the rotor next (cheaper than new wires), but wanted to check if there might be something else I should also check/check instead. Or could there be a problem with the cap I don't see? Thanks for any help.

I would consider trying the old method of having the engine running and pull off a wire at a time to see which one has little effect on the running of the car. Take it from there but the wires would be my suspect.

OK, check the ignition timing first.

I will be driving for a liitle while and the car starts bogging down and most of the time will die. Sometimes it will start right back up like nothing ever n
Happened and other times it will take a few minutes of turning it over to start up and it will run fine . When it is bogging down and almost dying I can push on the accelerator and sometimes it will bog a little bit and come back running like it should without dying. Some people say it is a fuel issue and others say electrical. Trying to figure this problem out and hoping you can help thanks Darren

The car is a 1999 Honda civic 2 door 1.6 liter engine. No modifications

Take it into an auto parts store and they will tell you why the CHECK ENGINE LIGHT is on. I am assuming it is based on your description. You can start troubleshooting from there.

I have really bad acceleration. My car has always been pretty slow because it is a 4 cyl but it has been getting worse. I took it to be looked at and he said that it probably needs a tuneup. I got the tuneup and it is still running super slow. He told me it wasn't my cadilac converter. How would i know what it is.

You have to get a second opinion or take it back to the original shop and tell them they did not solve the original problem.

A tune-up is a great idea to begin with, however if you are still having an issue you will have to do numerous tests. Such as compression checks, MAP sensor, timing, etc.

1999 Honda Civic

I am sorry i cannot make a donation at this time due to a 1400 dollar repair bill that has not fixed the a/c. if this works i will be back to make a donation. YOU CAN COUNT ON THAT. my 99 civic wood die when the a/c was turned on and if i kept the car running the compressor wood turn on and off real fast. i took it in and they replaced the compressor, evaporater, and r/d and now the car bogs down when the a/c turns on and the compressor cycles like normal but my pressures are maxed on the low side and slightly higher than normal on the hi side.they then flushed the system but nothing has changed what do i need to do to get a/c that works without stalling the car.

Hi gil lyke,

When the low and high pressure are too high, it would result in heavy load on the compressor and that could be the reason the engine is stalling and the compressor is kicking in and out.

Possible causes for both side high pressure are :

1. Reduced air flow through condenser.

Probable causes :

a. Clogged condenser fins.
b. Condenser fan not working properly.

Remedy:

a. Clean the fins.
b. Check fan rpm.
c. Check fan direstion.


2. No bubbles in sight glass when condenser is cooled by water.

Excessive refrigerant in system.

Evacuate and recharge.

I own a Honda civic LX 1999 1.6L with 84k miles. I hear a tuk tuk sound(sounds like something is rotating in the front) when i slow down the car.But I
do not hear it when I accelerate.what could be the problem? Is the problem serious enough to be taken to a mechanic?

Sounds like you might some brake issues. maybe pads are worn or comeing apart. i'd have it checked out. if it needs brakes its a little $ now or a lot $ later

I just got my brake checked, even flushed and refilled the brake fluid,brake seems to work well(no noise coming from the brake). I feel something is rotating.