Strange idle surging and mpg drop..
#1
Strange idle surging and mpg drop..
Hey guys so another question that i have is my car is idling a little strange it kinda shakes then i press a little in the gas pedal and it stops shaking but you can hear the engine rev up and down a little then you press it for a little more and this stops in neutral and park its not that bad this is the only thing that happens but on drive and r it just sounds sluggish and without any power until i press the pedal and it gets better if i dont and just put it in drive most of the times it will just die... another thing is im getting really bad gas millage and the exhaust smells like gas when on.. Would appreciate your help my friends
Honda civic 93
Honda civic 93
Last edited by JD Romo; 09-25-2014 at 08:21 PM.
#2
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Re: Strange idle surging and mpg drop..
I hate to be the one to give you bad news buts its a bad head. Your going to need a new motor this same thing happened to me
#3
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Re: Strange idle surging and mpg drop..
That seems like a quick jump on the gun there, I'm sure plenty of other things can contribute to the symptoms the OP is seeing. Did you compression test the engine? This might be your answer as to why it's sluggish and have you adjusted your idle screw or cleaned out your IACV recently? If not, do that. Steps are in the FAQ stickies for both test I mentioned.
Good luck.
Good luck.
#4
I never narc'd on nobody!
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Re: Strange idle surging and mpg drop..
Rules, Thread Titles, Car Information, Searching, Trial Users, and Picture Posting
Read that, then try again. We don't do advice for rotary swapped Caprices.
Read that, then try again. We don't do advice for rotary swapped Caprices.
#6
Re: Strange idle surging and mpg drop..
im really sorry for doing things incorrectly guys and today i clean the IAC havent messed around with the screw will try to find post and do it and by the way guys the car is a 1993 honda civic.
thanks for the replay i appreciate the advice
thanks for the replay i appreciate the advice
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#9
Re: Strange idle surging and mpg drop..
Thanks for the manual guys and thank you for the suggestions.. will try that today when i get of off work will post as soon as I've done it.. or in case i have a doubt haha.. and do you guys think uploading a video would help determine the problem maybe with the noises that can be heard? I'm also thinking maybe my timing could be wrong.. will anything contribute? Will take pictures or video of anything you guys tell me to.
#10
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Re: Strange idle surging and mpg drop..
Any additional info would help just to confirm things, video the sound and take some of the timing marks, cam and crank. Cover will have to come off but to verify, that's what you'll have to do. What do you mean will anything contribute? As in would the timing contribute to the symptoms you are experiencing? Yes, timing would effect the idle and possibly explain the surging. Have a timing light handy?
#11
Re: Strange idle surging and mpg drop..
Any additional info would help just to confirm things, video the sound and take some of the timing marks, cam and crank. Cover will have to come off but to verify, that's what you'll have to do. What do you mean will anything contribute? As in would the timing contribute to the symptoms you are experiencing? Yes, timing would effect the idle and possibly explain the surging. Have a timing light handy?
#12
Re: Strange idle surging and mpg drop..
Ok guys so here's the video its not thr best in quality and its a little to noisy but i think the problem can be heard easily
http://youtu.be/A5OKn5mcqq4
Thanks in advance for the help or advice you might give me.
http://youtu.be/A5OKn5mcqq4
Thanks in advance for the help or advice you might give me.
#13
Re: Strange idle surging and mpg drop..
Turns out the distributor was a little off i messed around with it and now the cars a little better i cheked the iac valve and im missing one of the lines i have no clue what its function is.. apperantly my mpg has incresed a little i went to a shop and they used transmission oil to clean my o2 sensor i dont know if this really helped im still getting the cel for the o2 sensor The car is still dieing (at times) on Drive and Reverse.. the guys there said it was the iac valve and nothing alse but im not so sure about this.. any info would be great..
When getting cel codes i still get a code for the o2 and a code for the iac valve..
When getting cel codes i still get a code for the o2 and a code for the iac valve..
#17
Re: Strange idle surging and mpg drop..
I couldent get a picture because i dont have any tools here where i am but anyway i got this little video hope you guys can see
https://www.youtube.com/watch?v=P9EM...ature=youtu.be
the line im missing is number one on this picture
http://i11.photobucket.com/albums/a1...r/IMG_1228.jpg
(Thats not my car its a picture i found on google)
EDIT:
yes 09chaplak i reset the ecu by taking of the 7.5 fuse
NotARacist yeah i have no clue but it is missing
Theres the pic and video specially for you tony haha
I was also wondering maybe the time isnt all the way correct? because i still smell some gas (not as much as before) the guys messing around with the distribuitor position helped out with the smell but im still getting some
https://www.youtube.com/watch?v=P9EM...ature=youtu.be
the line im missing is number one on this picture
http://i11.photobucket.com/albums/a1...r/IMG_1228.jpg
(Thats not my car its a picture i found on google)
EDIT:
yes 09chaplak i reset the ecu by taking of the 7.5 fuse
NotARacist yeah i have no clue but it is missing
Theres the pic and video specially for you tony haha
I was also wondering maybe the time isnt all the way correct? because i still smell some gas (not as much as before) the guys messing around with the distribuitor position helped out with the smell but im still getting some
#18
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Re: Strange idle surging and mpg drop..
That line is coming off of your IACV, and goes to a small nipple, either on the water tube on the back of the engine, or on your thermostat housing. If you don't have it, then your IACV and FITV aren't getting a flow of coolant, and can't do their jobs. Get a replacement line. It doesn't have to be anything special - just a length of tube from your local parts store. Install it.
#19
Re: Strange idle surging and mpg drop..
That line is coming off of your IACV, and goes to a small nipple, either on the water tube on the back of the engine, or on your thermostat housing. If you don't have it, then your IACV and FITV aren't getting a flow of coolant, and can't do their jobs. Get a replacement line. It doesn't have to be anything special - just a length of tube from your local parts store. Install it.
#21
#23
Re: Strange idle surging and mpg drop..
heres a picture!
EDIT: the middle hose from the little can
the one thats loose is the middle hose
#24
Re: Strange idle surging and mpg drop..
That's part of the evap for the fuel system. I believe that's the charcoal canister in your pic.
You said you have a 93 civic, what trim level? CX/DX/SI/VX.
Then also, look on the front of the motor (side facing the radiator) and find the sqare 2-3 inch flat spot, it should have a D15 number or D16 stamped into that square, can you provide whether it says D15B8, D15B7, D15Z1 or D16Z6?
I can provide all the FSM pages for these hoses you have issues for and we can get your 93 up and running properly. But first we need to know the motor that is in it, and the trim level of the car to verify it's still the stock motor.
You said you have a 93 civic, what trim level? CX/DX/SI/VX.
Then also, look on the front of the motor (side facing the radiator) and find the sqare 2-3 inch flat spot, it should have a D15 number or D16 stamped into that square, can you provide whether it says D15B8, D15B7, D15Z1 or D16Z6?
I can provide all the FSM pages for these hoses you have issues for and we can get your 93 up and running properly. But first we need to know the motor that is in it, and the trim level of the car to verify it's still the stock motor.
My car is a DX coupe
the flat plate says D15 B7