mystery sohc vtec
12-19-2006, 03:11 PM
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mystery sohc vtec. THIS IS SCREWING UP MY CHRISTMAS!
car runs fine until warm. then it acts like it is starving for fuel or air. drained tank. changed fuel filter, air filter, spark plugs, wires. cannot figure it out. no cels. car even cuts off when warm sometimes. appreciate opinions/ advice
Modified by nello a. at 9:06 AM 12/20/2006
Modified by nello a. at 9:06 AM 12/20/2006
12-19-2006, 03:17 PM
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Re: mystery sohc vtec (nello a.)
Sounds like ur IACV but it would throw a CEL.
Does the RPM struggle (bouncy idle) before it stalls? Or does it just go out?
Does the RPM struggle (bouncy idle) before it stalls? Or does it just go out?
12-19-2006, 03:20 PM
#4
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Re: mystery sohc vtec (Syndacate)
IAC wont throw a code unless the valve itself is damaged. When IAC gives you problems it just gives you problems and doesnt sound like this.
If you could get a video of how the car dies it would help alot. But it could be anything from main relay going out to spark. Try swapping out the main relay. Also when your driving and gettng to operating temp the car just shuts off or how does it go exactly?
If you could get a video of how the car dies it would help alot. But it could be anything from main relay going out to spark. Try swapping out the main relay. Also when your driving and gettng to operating temp the car just shuts off or how does it go exactly?
12-19-2006, 03:26 PM
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Re: mystery sohc vtec (Luserkid)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Luserkid »</TD></TR><TR><TD CLASS="quote">IAC wont throw a code unless the valve itself is damaged. When IAC gives you problems it just gives you problems and doesnt sound like this.
If you could get a video of how the car dies it would help alot. But it could be anything from main relay going out to spark. Try swapping out the main relay. Also when your driving and gettng to operating temp the car just shuts off or how does it go exactly?</TD></TR></TABLE>
I dunno man, my probe threw an IACV code and the valve wasn't damaged - just was giving me problems.
Though if it's just dying like that - it sounds exactly like an IACV problem, I drove my car for a year w/ that problem.
Won't do it while it's cold either.
Usually starves out, the RPM drop a little, then the ECU tries kicking them back up, and it creates an idle flux once or twice then stalls.
'Tis why I asked if it bounces a bit or just cuts out completely.
EDIT:
So I guess I can also add the question:
If you give it gas while it's stalling or choking does it keep going? Or continue choking?
If you could get a video of how the car dies it would help alot. But it could be anything from main relay going out to spark. Try swapping out the main relay. Also when your driving and gettng to operating temp the car just shuts off or how does it go exactly?</TD></TR></TABLE>
I dunno man, my probe threw an IACV code and the valve wasn't damaged - just was giving me problems.
Though if it's just dying like that - it sounds exactly like an IACV problem, I drove my car for a year w/ that problem.
Won't do it while it's cold either.
Usually starves out, the RPM drop a little, then the ECU tries kicking them back up, and it creates an idle flux once or twice then stalls.
'Tis why I asked if it bounces a bit or just cuts out completely.
EDIT:
So I guess I can also add the question:
If you give it gas while it's stalling or choking does it keep going? Or continue choking?
12-19-2006, 04:12 PM
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it struggles back and forth once or twice, then it dies. i am getting this car running-ie, i bought it not running. no cels. i dont get it
12-19-2006, 04:14 PM
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when driving, the car will be ok for about 5 mins, then it wont rev(like it is down a cylindeer or something). you can keep it alive if you play with the throttle.
main relay is new
main relay is new
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12-19-2006, 04:16 PM
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Re: (nello a.)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nello a. »</TD></TR><TR><TD CLASS="quote">when driving, the car will be ok for about 5 mins, then it wont rev(like it is down a cylindeer or something). you can keep it alive if you play with the throttle.
main relay is new</TD></TR></TABLE>
Oh, okay, so it happens while you're driving (at a steady throttle amount)?
If so, exclude my IACV idea.
main relay is new</TD></TR></TABLE>
Oh, okay, so it happens while you're driving (at a steady throttle amount)?
If so, exclude my IACV idea.
12-19-2006, 04:27 PM
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warm engine is all i got. it happens when driving-it happens when idling. it acts like it is starving, or down a cylinder. injectors are working. cracked spark plug?(one of the guys in the shop said this). i am getting pissed.
12-19-2006, 04:31 PM
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Re: (nello a.)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nello a. »</TD></TR><TR><TD CLASS="quote">warm engine is all i got. it happens when driving-it happens when idling. it acts like it is starving, or down a cylinder. injectors are working. cracked spark plug?(one of the guys in the shop said this). i am getting pissed.</TD></TR></TABLE>
Doubtful if you changed the spark plugs.
Might wanna change the rotor and cap to just to be on the safe side.
Other than that I'm pretty bogged down, hard to tell sometimes w/o actually looking at it. :-\.
Doubtful if you changed the spark plugs.
Might wanna change the rotor and cap to just to be on the safe side.
Other than that I'm pretty bogged down, hard to tell sometimes w/o actually looking at it. :-\.
12-19-2006, 08:29 PM
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Re: (nello a.)
if theres no engine light its proly not the plugs, wires or cap cuase it would most likely throw the misfire codes! did u check fuel delivery to each cylinder ? check ur o2 sensor!
12-19-2006, 09:53 PM
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What do you think about having a faulty spark plug wire?
Do you have anyone around you that will let you swap wires really quick? While the car is idling pop the wires off one by one. It should bog a bit every time you yank one.
If you yank one and nothing happens...It may be bad.
Just my idea..I could be way off
Good luck man.
Do you have anyone around you that will let you swap wires really quick? While the car is idling pop the wires off one by one. It should bog a bit every time you yank one.
If you yank one and nothing happens...It may be bad.
Just my idea..I could be way off
Good luck man.
12-19-2006, 10:01 PM
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Re: (SkipMic2006)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SkipMic2006 »</TD></TR><TR><TD CLASS="quote">this sounds like what my hatch did to me on a sohv vtec and it was a bad disturbutor, then i put a another on there and it ran just fine..</TD></TR></TABLE>
Thats what I originally thought too, but he said he swapped the dizzy already and didnt correct the problem. Weird, huh?
Thats what I originally thought too, but he said he swapped the dizzy already and didnt correct the problem. Weird, huh?
12-19-2006, 10:31 PM
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Re: (SkipMic2006)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SkipMic2006 »</TD></TR><TR><TD CLASS="quote">huh? that is weird ... honda fuel pump is rarely to go out are they?</TD></TR></TABLE>
To be honest I'm not sure how common a faulty one is. I've owned 2 Civics and an Integra and replaced a few fuel FILTERS for maintainence but I've never had the fuel pumps cause me any problems.
Guess anything is possible though, yanno?
To be honest I'm not sure how common a faulty one is. I've owned 2 Civics and an Integra and replaced a few fuel FILTERS for maintainence but I've never had the fuel pumps cause me any problems.
Guess anything is possible though, yanno?
12-20-2006, 07:08 AM
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help guys. it is almost like it is on a timer. when the car is warm and cuts off, then is restarted, it runs fine(idle and revs)for a few mins., then struggles a few times and dies.
i am going to 6try another distributor again and different wires. this sounds like some kind of sensor though.
i am going to 6try another distributor again and different wires. this sounds like some kind of sensor though.
12-20-2006, 07:25 AM
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I don't know, I can ALMOST settle with the idea that it's fuel related but it'd most definitely do it then when it's cold as the engine's pumping MORE fuel than when it's idling warm so it can warm up as quickly as possible.
12-20-2006, 08:41 AM
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Re: (o_fatmike_o)
it cant really be a plug wire or dizzy prob becuase it would misfire and throw a code(wouldn't it)! not to mention it would do it cold as well not just warm. IT AlMOST HAS TO BE A SENSOR! proly on the throttle body or intake manifold(not real knowledgeable with hondas sensors) if its fuel related its got to be injectors but like i said before CHECK UR O2 SENSOR! i could be wrong about the o2 but if heard of simular problems and a new 02 cured it.could this possibly be a cracked head or bad head gasket???!