Help.. Hard start, Hot weather

Teknicz · June 15th, 2010, 11:18 PM

I've been noticing this issue but when its hot outside and the sun is beating on my car it takes a long time to start like yesturday it was really hot and the sun was beamin on my car in the parkin lot, it like try to start but takes a while to turn over and the service engine light came on, then went away in the afternoon.. which was kind of strange... today was a cool day and my car started fine... So any ideas?? Thanks for your input......And yea im in florida s0o0o summer time is already here -___-

forcefedcobra · June 16th, 2010, 12:01 PM

do you have aftermarket fuel rails? I had a similar issues after installing my full lethal/fore fuel system. I think it is due to the rails vapor locking after the fuel runs back and the rails fill with vapor..............since I no longer have the pprv in the tank due to it being replaced with the fore tophat some have suggested that I get a russell check valve to put in between the tophat and fuel filter. Also some say cycling the key on and off several times before trying to start the car will help the issue.

Teknicz · June 16th, 2010, 05:19 PM

umm no, well not that i know of, it looks stock, its just when its hot out.. i guess i'll try the cycling of the key. My cuz have a diagnostic machine so i guess i'll let him have a look, last resort is to take it to ford -___-

WabashaCobra99 · June 18th, 2010, 10:19 PM

I'm seeing the same issue on my 99 Cobra. It's not real bad, but taking longer than I'd like to start on warm days, and no check engine light. I'm gonna try new plugs before I worry too much about it.

I'm assuming you only fill up with premium.

TheUNZippee! · June 18th, 2010, 10:21 PM

A couple of possibilities that will cause hard hot starts are bad timing or a bad starter.

Are you sure it's just the ambient temperature affecting it? Meaning, is the engine operating temperature affecting how it starts?

WabashaCobra99 · June 18th, 2010, 10:27 PM

I forgot what we were talking about here. Having a sudden urge for cotton candy.

TheUNZippee! · June 18th, 2010, 10:53 PM

Teknicz · June 20th, 2010, 11:41 PM

lol yea same here and yes only premium, and na not the engine temp because the car would sit for a couple hours while im in class.. change the plugs and let me know.... And ur a random dude lmao!

WabashaCobra99 · June 21st, 2010, 10:09 PM

New NGK plugs are on order. I'll let you know if issue clears when I get them installed.

WabashaCobra99 · June 26th, 2010, 06:28 PM

I got the new plugs in last night. It was pretty hot out today and the car started right up without any hesitation.

Teknicz · July 20th, 2010, 07:40 PM

I seen u started it, but did u ever have the problem again since you done it? It happened to me again yesturday!

WabashaCobra99 · July 21st, 2010, 08:40 PM

I haven't had any issues since and it's been consistently hot here for awhile. Even restarting with the engine hot hasn't been a problem.

You might be having other electrical problems, maybe a dirty connector or a cold solder joint. I'm an electronics technician and I really hate intermittent issues like that. Unless you have a way to apply pinpoint cooling and heating to specific areas in your ignition circuitry, it can be very hard to find the problem. If you care to identify the main components in your ignition you can use canned air to cool the individual parts by holding the can upside down when spraying.

Cricket · July 21st, 2010, 11:15 PM

But what is hot for you? Hot for you might be a lot different than hot in Orlando.

Also many 4v's need summer and winter tunes since our engines are kinda temperamental.

MadBeau · July 24th, 2010, 06:47 PM

Originally Posted by Cricket

But what is hot for you? Hot for you might be a lot different than hot in Orlando.

Also many 4v's need summer and winter tunes since our engines are kinda temperamental.

Who is that in your avatar...

SLPstell · July 24th, 2010, 07:22 PM

i had the same prob i changed the plugs not a big change but did the trick..

June 15th, 2010, 11:18 PM	#1
Teknicz Regular 99 mustang cobra Join Date: Nov 2009 Location: Orlando Posts: 206 iTrader: 0 reviews	Help.. Hard start, Hot weather I've been noticing this issue but when its hot outside and the sun is beating on my car it takes a long time to start like yesturday it was really hot and the sun was beamin on my car in the parkin lot, it like try to start but takes a while to turn over and the service engine light came on, then went away in the afternoon.. which was kind of strange... today was a cool day and my car started fine... So any ideas?? Thanks for your input......And yea im in florida s0o0o summer time is already here -___- __________________ NO CATS NO GLORY SLP LOUDMOUTH FTW MM Cobra Club #57

June 16th, 2010, 12:01 PM	#2
forcefedcobra Enthusiast 2003 SVT Cobra Join Date: Nov 2008 Location: oklahoma Posts: 535 iTrader: 0 reviews	do you have aftermarket fuel rails? I had a similar issues after installing my full lethal/fore fuel system. I think it is due to the rails vapor locking after the fuel runs back and the rails fill with vapor..............since I no longer have the pprv in the tank due to it being replaced with the fore tophat some have suggested that I get a russell check valve to put in between the tophat and fuel filter. Also some say cycling the key on and off several times before trying to start the car will help the issue. __________________ I buy car mods for the stickers, and I have ALOT of stickers! Travis Billings May 6, 1982 - July 5, 2011 Rest In Peace brother, you will be missed.

June 16th, 2010, 05:19 PM	#3
Teknicz Regular 99 mustang cobra Join Date: Nov 2009 Location: Orlando Posts: 206 iTrader: 0 reviews	umm no, well not that i know of, it looks stock, its just when its hot out.. i guess i'll try the cycling of the key. My cuz have a diagnostic machine so i guess i'll let him have a look, last resort is to take it to ford -___- __________________ NO CATS NO GLORY SLP LOUDMOUTH FTW MM Cobra Club #57

June 20th, 2010, 11:41 PM	#8
Teknicz Regular 99 mustang cobra Join Date: Nov 2009 Location: Orlando Posts: 206 iTrader: 0 reviews	lol yea same here and yes only premium, and na not the engine temp because the car would sit for a couple hours while im in class.. change the plugs and let me know.... And ur a random dude lmao! __________________ NO CATS NO GLORY SLP LOUDMOUTH FTW MM Cobra Club #57

July 20th, 2010, 07:40 PM	#11
Teknicz Regular 99 mustang cobra Join Date: Nov 2009 Location: Orlando Posts: 206 iTrader: 0 reviews	I seen u started it, but did u ever have the problem again since you done it? It happened to me again yesturday! __________________ NO CATS NO GLORY SLP LOUDMOUTH FTW MM Cobra Club #57

June 18th, 2010, 10:19 PM	#4
WabashaCobra99 Who needs titles... 1999 Mustang Cobra Join Date: Jun 2010 Location: Plainview, MN Posts: 1,114 iTrader: 0 reviews	I'm seeing the same issue on my 99 Cobra. It's not real bad, but taking longer than I'd like to start on warm days, and no check engine light. I'm gonna try new plugs before I worry too much about it. I'm assuming you only fill up with premium.

June 18th, 2010, 10:27 PM	#6
WabashaCobra99 Who needs titles... 1999 Mustang Cobra Join Date: Jun 2010 Location: Plainview, MN Posts: 1,114 iTrader: 0 reviews	I forgot what we were talking about here. Having a sudden urge for cotton candy.

June 21st, 2010, 10:09 PM	#9
WabashaCobra99 Who needs titles... 1999 Mustang Cobra Join Date: Jun 2010 Location: Plainview, MN Posts: 1,114 iTrader: 0 reviews	New NGK plugs are on order. I'll let you know if issue clears when I get them installed.

June 26th, 2010, 06:28 PM	#10
WabashaCobra99 Who needs titles... 1999 Mustang Cobra Join Date: Jun 2010 Location: Plainview, MN Posts: 1,114 iTrader: 0 reviews	I got the new plugs in last night. It was pretty hot out today and the car started right up without any hesitation.

July 21st, 2010, 08:40 PM	#12
WabashaCobra99 Who needs titles... 1999 Mustang Cobra Join Date: Jun 2010 Location: Plainview, MN Posts: 1,114 iTrader: 0 reviews	I haven't had any issues since and it's been consistently hot here for awhile. Even restarting with the engine hot hasn't been a problem. You might be having other electrical problems, maybe a dirty connector or a cold solder joint. I'm an electronics technician and I really hate intermittent issues like that. Unless you have a way to apply pinpoint cooling and heating to specific areas in your ignition circuitry, it can be very hard to find the problem. If you care to identify the main components in your ignition you can use canned air to cool the individual parts by holding the can upside down when spraying. __________________ MM Cobra Club Member #97 Just call me Jon Minnesota! Jon's Sig Collection

July 24th, 2010, 07:22 PM	#15
SLPstell Newbie 2007 mustang gt Join Date: Apr 2007 Location: bergen county Posts: 27 iTrader: 0 reviews	i had the same prob i changed the plugs not a big change but did the trick..

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