Car dies on hot start

[evilmonkeyMSP]

Anyone else had this problem before or have any insight into why?

<O</OEvery once in a while after i have been driving the MSP around in this hot ass FL weather w/ the A/C on i will shut the car off and let the TT run like i usually do and go into where ever i am. Once i come back out and get in and start the car it sometimes just loses revs and just dies. I can keep it alive by blipping the gas. Sometimes i can get it to stop my just revving it up a bit and let it go but sometimes i do that and then it still falls on its face.<O</O
<O</O

Then i usually just blip the gas and back out and go on my way and once i get driving it doesnt do it at the next stop. <O</O
<O</O

Im not really concerned about it because the car drives perfectly and i just chock it up to the heat and using the A/C because it doesnt happen when im not using the a/c.<O</O
<O</O

Any ideas?<O</O

 

[sanblaster]

Do a cold start then.. And be my neighbor in Illinois where it is cold...

 

[evilmonkeyMSP]

lol shut up santos

 

[evilmonkeyMSP]

oh, i forgot to mention...after this happens and the problem ends my Vac still reads 21...

 

[kamon8404]

Yeah, I'm not in hot ass FL but my car has a crazy idle just at start up. Once I rev it about 2 grand it usually cures the problem. However it doesn't always. After it jumps around like crazy the idle is fine, at stops, and all around regular driving. I have a strong idle at about 800 or so. In addition to the fact that I look like a goober reving my car with a loud ass exhaust. I'm beginning to think that its the EGR valve and was going to clean it and see if that takes care of the problem.

 

[evilmonkeyMSP]

yeah, i didnt even think of the EGR...that could be my issue

 

[BOOSTR]

Sounds like a gremlin. Nasty little buggers. Doubt is an EGR and more like faullty electrical connection somewhere. Longshot is potential or developing fuel delivery problem. How many miles do you have?

I've not yet experienced that problem driving down here yet.

 

[evilmonkeyMSP]

a little over 60k i believe...it used to happen every now and then back when i had less miles too...

It could just be a gremlin.

 

[BOOSTR]

Check your wires and coil packs and the alternator connections to rule those out. I've 65K and the only gremilin that I get is an occasional turning off of the a/c light when the fan is on speed 2.

 

[fr0st]

dont forget that richness aned hot temperatures will make the nasty side show up..

on cooler temps, the richness isin't as bad..

same goes for my race bike..

 

[evilmonkeyMSP]

thats what i was kind of thinking..it acts like it gets fuel overload and the VAC dives and it just stalls...

dont forget that richness aned hot temperatures will make the nasty side show up..

on cooler temps, the richness isin't as bad..

same goes for my race bike..

 

[peajay]

Doubt it's egr if it's only at idle, try different fuel.

 

[RevLimitLaunch]

i had a similar problem, but on a 97 eclipse gs-t. cold start up would be perfect as could be, but after getting up to proper temp, more apt to happen the hotter it was outside, if i shut it off it wouldn't want to start. twist the key and all it would do is turn, couldn't even pop start it 3/4 of the time. there were some times it would randomly suddently catch but that was very few lol. after letting it sit for a half hour or so it would start up perfectly. ended up being my CAS (cam angle sensor).

 

[RevLimitLaunch]

is your check engine light on at all? if so, check it out at the nearest autozone (free to check).

 

[evilmonkeyMSP]

no engine light

 

[kamon8404]

I filled up at BP yesterday as opposed to the get go i usually fill up at, and the crazy idle at start up seems to have dissipated. I'm still planning on cleaning the EGR valve for good measure. I just bought the carb cleaner today, and was going to buy the lube but, i thought that i already had some.

 

[shane02pro5]

If you find an answer let me know! I figured it was just heatsoak and until some fresh air is cycled thru the IC it does it every time to me. Same in traffic once up to temp sitting in any stand still after a while I have to kill the stereo and constantly blip the gas to keep her running!

I'm hoping to find some little vac leak or a bare wire someday! EGR cleaning=waste of time. If it does anything it doesn't last long!!

 

[evilmonkeyMSP]

glad im not the only one. It never does it in traffic, only on start up when really hot so you could be right as far as it being heatsoak

 

[HBreeder]

I've had this problem on and off for a few years now on my MSP. My conclusion is that the bad idle is a result of heatsoak.

It has never happened on the first start up of the day or if the engine has cooled down. It only has happened if I've driven around for more than 20 mins and park somewhere only to start it up again within an hour of shutting it off. It especially happens on hot days which really suck here in the SFV.

I have the TH SMIC w/ hardpipes which get pretty hot with the radiant heat in the engine bay when its been turned off. The problem diminished a bit when i covered the hot pipe with thermal wrapping, but the SMIC gets pretty hot sitting next to the radiator. Been thinking about putting a thermal barrier between the two like sticking the wrap to that one side of the SMIC.

This has been my way of dealing with it. The idle does fix itself once you get cooler air flowing for a minute.

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