wont start after its warmed?

02gtbangstang · March 4th, 2011, 08:45 PM

Ya how do you test the tfi? also what is that lol..............

MIGHTYJO3YOUNG · March 4th, 2011, 11:18 PM

My old fox did this. It was so annoying. I could get it to start after it was warmed and shut off, but I would have to crank it and hit the gas at just the right time for it to start. My guess is that it was the ignition system. If I missed that mark, I would have to wait like you for an hour or so till it cooled off, or I'd get some people to push me and crank the key and dump the clutch and it would start.

02gtbangstang · March 5th, 2011, 09:39 AM

ya its annoying luckly its not my DD and am not too worried about it, just got to to tinker on so am just trying to get some ideas on what to look for!

moneymo · March 5th, 2011, 08:13 PM

I had the same thing happen and im pretty sure its yout TFI, i would get the checked out. I bought a re locator kit on mine so i wont have this problem again.

mogie · March 6th, 2011, 10:30 AM

i have same problem as u,,, when its warm and wont start disconect the fuelpump relay under the driver seat and crank it over,, untill it fires,,, then once it fires it wont stay running,, plug relay back in and it should start

02gtbangstang · March 7th, 2011, 08:12 PM

Originally Posted by mogie

i have same problem as u,,, when its warm and wont start disconect the fuelpump relay under the driver seat and crank it over,, untill it fires,,, then once it fires it wont stay running,, plug relay back in and it should start

Does this mean the relay is bad?

franklikegore · March 8th, 2011, 09:21 PM

Ii had the same problem.. Changed the tfi that wasn't it, changed the coil that wasn't it, changed the distributor pick up that wasn't it. Turns out it's the ignition relay..18$ part.

boosted89gt · March 9th, 2011, 04:04 AM

i had the same problem also and it turned out to be the tfi module so i always keep a spare band new one with me and with the tfi module tool also

tranram · March 9th, 2011, 09:50 AM

man i have got crap for this fix, but i think it will help you, unhook one of the upper intake lines, under upper intake,and see if after it running, if it stays running with one of the vac line unhooked, iam not saying to run it that way just see if it helps, if it does help ill pm you with the fix.

87mustangcoupe · March 10th, 2011, 11:11 PM

hey guys; i'm new here as well but i have the exact same problem. its been this way for years for me. also the exact same symptoms as mightyjo3young. i have replaced the tfi a while ago and that didnt help my situation. i have not tried the relays yet. any other information you come upon let me know. thanks!

02gtbangstang · March 12th, 2011, 09:54 AM

K thanks for all the idea's guys!!

March 4th, 2011, 08:45 PM	#21
02gtbangstang Regular 2002 Mustang Gt 13.0 Join Date: Jan 2008 Location: Greeley, Co Posts: 267 iTrader: 0 reviews	Ya how do you test the tfi? also what is that lol.............. __________________ bbk longtubes,bbk hpipe,flowmasters,CAI,mgw shtshft, Nitrous, mach2 ram air hood, 04 cobra frntbmpr,saleen s281 drag wing, 04 svt chrome wheels, "HONDAS ARE LIKE TAMPONS EVERY PUSSY HAS ONE!"

March 4th, 2011, 11:18 PM	#22
MIGHTYJO3YOUNG Enthusiast 1992 mustang Lx 13.4@ 106 Join Date: Dec 2006 Location: MD Posts: 569 iTrader: 0 reviews	My old fox did this. It was so annoying. I could get it to start after it was warmed and shut off, but I would have to crank it and hit the gas at just the right time for it to start. My guess is that it was the ignition system. If I missed that mark, I would have to wait like you for an hour or so till it cooled off, or I'd get some people to push me and crank the key and dump the clutch and it would start. __________________ 1992 5.0 lx_soon to be powered by a m122 GT500 supercharger

March 5th, 2011, 09:39 AM	#23
02gtbangstang Regular 2002 Mustang Gt 13.0 Join Date: Jan 2008 Location: Greeley, Co Posts: 267 iTrader: 0 reviews	ya its annoying luckly its not my DD and am not too worried about it, just got to to tinker on so am just trying to get some ideas on what to look for! __________________ bbk longtubes,bbk hpipe,flowmasters,CAI,mgw shtshft, Nitrous, mach2 ram air hood, 04 cobra frntbmpr,saleen s281 drag wing, 04 svt chrome wheels, "HONDAS ARE LIKE TAMPONS EVERY PUSSY HAS ONE!"

March 5th, 2011, 08:13 PM	#24
moneymo Premium Member 1991 Mustang Gt 5.0 Join Date: Sep 2010 Location: Grayson, GA Posts: 197 iTrader: 0 reviews	I had the same thing happen and im pretty sure its yout TFI, i would get the checked out. I bought a re locator kit on mine so i wont have this problem again. __________________ 91 Mustang Gt 306/Under Drive Pulleys/gt40 heads/ so many more goodies

March 6th, 2011, 10:30 AM	#25
mogie Newbie 1989 5.0 Mustang Join Date: Dec 2010 Location: Santa Cruz CA, Posts: 3 iTrader: 0 reviews	heres the trick i have same problem as u,,, when its warm and wont start disconect the fuelpump relay under the driver seat and crank it over,, untill it fires,,, then once it fires it wont stay running,, plug relay back in and it should start

March 8th, 2011, 09:21 PM	#27
franklikegore Newbie Join Date: Feb 2011 Posts: 2 iTrader: 0 reviews	Ii had the same problem.. Changed the tfi that wasn't it, changed the coil that wasn't it, changed the distributor pick up that wasn't it. Turns out it's the ignition relay..18$ part.

March 9th, 2011, 04:04 AM	#28
boosted89gt Newbie 1989 mustang gt Join Date: Jan 2010 Location: ho town Posts: 45 iTrader: 0 reviews	i had the same problem also and it turned out to be the tfi module so i always keep a spare band new one with me and with the tfi module tool also

March 9th, 2011, 09:50 AM	#29
tranram Regular 94 5.0 302 gt in the making Join Date: Dec 2010 Location: HOME OF BILL CLINTON Posts: 89 iTrader: 0 reviews	man i have got crap for this fix, but i think it will help you, unhook one of the upper intake lines, under upper intake,and see if after it running, if it stays running with one of the vac line unhooked, iam not saying to run it that way just see if it helps, if it does help ill pm you with the fix.

March 10th, 2011, 11:11 PM	#30
87mustangcoupe Look Ma! My First Post! 1987 mustang 14.00@108 Join Date: Mar 2011 Location: pennsylvania Posts: 1 iTrader: 0 reviews	hey guys; i'm new here as well but i have the exact same problem. its been this way for years for me. also the exact same symptoms as mightyjo3young. i have replaced the tfi a while ago and that didnt help my situation. i have not tried the relays yet. any other information you come upon let me know. thanks!

March 12th, 2011, 09:54 AM	#31
02gtbangstang Regular 2002 Mustang Gt 13.0 Join Date: Jan 2008 Location: Greeley, Co Posts: 267 iTrader: 0 reviews	K thanks for all the idea's guys!! __________________ bbk longtubes,bbk hpipe,flowmasters,CAI,mgw shtshft, Nitrous, mach2 ram air hood, 04 cobra frntbmpr,saleen s281 drag wing, 04 svt chrome wheels, "HONDAS ARE LIKE TAMPONS EVERY PUSSY HAS ONE!"

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wont start after its warmed?

heres the trick