I have a 1998 Honda accord lx 4 cylinder when you put it in gear an give it a little gas you hear like a back fire in the air box an it hessitates to take off. Once the rpms are over 2000 or around that it is fine.nif I turn the AC on while sitting still it starts to idel rough an cuts off some time. I just replaced the tps sensor an its still doing the same thing what could the problem be?
Country: United StatesMake: HondaModel: AccordYear: 1998Engine: 4 cylinder
I have installed a newntps sensor an set it with a volt metter
Hi, my name is XXXX XXX I'm a Honda expert here at JustAnswer.com. I'd be glad to help you with your question.
Is the check engine light coming on at all?
Any recent repairs? Accidents?
no check engine light. first repair on the car since i have had it which is 2 years
The idle problem sounds like a bad idle air control valve to me. The backfire sound I'm not real sure about or if they are even related.
I would probably recommend checking the ignition parts next (spark plugs, dist. cap/rotor) if they are worn out it could cause a problem like you described with that backfire type noise.
when you hit the gas from a idel it sputters you give it more gas it goes.
Yeah that could definitely be worn plugs, cap or rotor.
That's a good first start. You don't have to automatically replace it all either I would just inspect it all.
it idel fine in netural i can put itin gear an turn the ac on ingetbthat rough idel some times it will cut off. itbhas never had plugs,wires etc ince i have had the car.
i get is the first miss spelled word. the last is it has
It can act different when in neutral because the engine isn't under any load so it's easier for the ignition system to provide spark. When it's under a load it's going to be more noticable.
sounds good i will start with plugs cap an rotor an go from there thanks.
No problem. If you can get them from a Honda dealer or source them online from an online dealer. The ignition parts are much better from the dealer. Only use NGK plugs in that engine too. Trust me on this. I just replaced a bunch of aftermarket stuff on a Civic today that was causing a misfire and it was brand new from a national auto parts chain.
Honda Dealer Tech, ASE Master Auto Tech
I replaced the plugs rotor button and cap the idel in gear is better. When I turn the ac on it starts tonight to sputteran idel down low. The car reves good in park. When I start to drive its that low end sputter once I get above 2000 rpm it picks up pretty good. I unplug the idel air control sensor drove it down the street an back seems to pick up better like it normal would. If you cut the car off an cut it on put it in gear it does not sputter then after that it will start back. Still getting the little spitting noise In the air box.
Relist: Incomplete answer.The things I changed did not fix the problem.
Different expert here Im sorry you had to change these parts that did not fix the issue.Let me ask you did this all start happening after having the a/c recharged?
The ac has been charged for two years now. With the ac off when I put it in gear an hit the gas like normal driving it spits an sputter through the air box. Once it gets over 2000 rpm it does not do it any more. I did unplug the idel air control valve when you first crank it an put it in gear an hit the gas it does not do it at first. After that if you hit the gas it spits an sputter. With it unplugged I had better speed pic up.
Try this disconnect the battery and remove and clean the throttle plate along with the throttle body.Also remove and clean the idle air control valve then reconnect the battery and see if it makes a difference.Also does the engine light come on then go out when cycling the key ?
As far as a check engine light one does not come on. Just normal one you first turn the car on it goes right out. The best way to clean all that is to take the upper intake off an take everything part correct?
Yes thats the best option .Use throttle body or carburetor cleaner to clean these parts.If these all check out ok it can be a shorted coil,igniter,distributer or faulty fuel pressure regulator.I would have these checked next for this issue.
Relist: Inaccurate answer.All the parts that I was told that I should replace none of them fix the problem.
hi lets start back at the beginning you replaced the tps senser did you go after market or honda also are you sure you did not plug something in wrong the tps senser and map senser can be switched
Everything is plugged in correct. I just put a new distributor in an a new fuel pressure regulator. Still the same problem. It only does it when its under a load. Sitting there keeling its fine when I put it in gear or cut the ac on it sputters to the point it will cut off.
If the vehicle runs fine until you turn the a/c on there is a problem with the a/c is overcharged or the compressor is seizing causing the engine to strain and causing this issue. You need to have the a/c checked next . Hoped this helped. Positive feedback and bonuses greatly appreciated.
Even with the ac off if I put it in gear it does the same thing. If you give it a little gas it spits an sputter an if you give it a little more it will go.
Let me ask you something was the timing belt ever replaced ? Also does the engine light come on then go out for its self check when cycling the key ?
I have had the car for 2 years. I don't know if it has ever been replaced. When I turn the key on the check engine light comes on as normal.
Ok sounds like the vehicle jumped time . Do you want directions on how to check timing ?
This is for a 1994 but the same set up and timing marks .Regardless this will show you how to change the timing belt and balancer belt.Heres the link.ClickHereHoped this helped.Positive feedback and bonuses greatly appreciated.HondaPlatinum41052.5741269676
Relist: Inaccurate answer.Everything that was mention has been changed. Still have a little sputter not as bad as it was. I have noticed that when I pull plug wire #2 it shuts off. 1,3,4 it runs with a miss. Its a little sluggish at times on take off. Sometimes it picks up good.
Ok what's the compression reading on all cylinders sounds like number 2 cylinder is dead .
I have not checked it. One thing I forgot to mention the wires have not been changed. The engine has good power when its right. Sitting keeling it runs fine reving it revs good. I was thinking maybe a bad injector possibly bad eye valve?
Very possible or the valves just out of adjustment . If it was a wire or injector issue it would misfire at idle also. I still would do a compression reading to rule that out .
At idel if you cut the ac on in gear it shuts down. It acts as if something is stopped up.
Could very well be a faulty alternator or shorted ECM located under passenger carpet . If there is any signs of water under passenger carpet that's ECM is shorted out and the issue . I would also have a charging system test done to rule out a faulty alternator.
How can I test ecm to see if it is bad? Could my alternator be bad no light has come on.
Yes absolutely the alternator can be bad have it load tested in the car. The ECM if it's wet or shows signs of water it's bad . You can send it out to be tested for about 100 dollars. If needed eBay or a salvage yard you can get it for about 100 dollars.
After a test 3 codes come up iat, an both o2 sensors. I'm tring to find part numbers for the o2 sensors. Mine has one in the converter. I see alot online that go in before the converter. Where can I find the part numbers at?
You need number 18 that gives you the part number and price . Here's the diagram.ClickHereIf there is still an issue it can be a faulty ECM.Hoped this helped. Don't forget to click accept so I get compensated for my time . Positive feedback and bonuses greatly appreciated.