86 full size xlt 5.0

kaspercolorado · 12-05-2012, 01:09 PM

I just bought a 86 xlt fullsize 5.0. Here's my issue I have changed my tank fuel pump, both fuel filters, oil change, distributor, cleaned the injectors, re- timed, and ran a fuel pressure test. The only mod I have not done myself is put on roller rocker racing heads. Now the problem is it will drive for a good 30 min but when my thermostat gets to about 190 degrees or hotter it just wants to die. It will idle fine but when I accelerate she wants to die and starts to sputter like she is not getting gas and in some cases she just dies completely and I have to wait for her to cool down to start again. I want to know if this may be from the ignition module getting too hot since it is on the distributor and that gets wicked hot. Is there a way to move the module or get one that has a higher heat resentance or is there something else that could be wrong? I love this girl and want to get her running like a champ again so she can play in the mud please help me thank you!!

**wdford** · 12-05-2012, 01:25 PM

What was the last thing you did before this happened? Whya was all that other stuff changed, to resolve this issue?

**JBfab** · 12-05-2012, 01:30 PM

Here you go for relocating the tfi
http://www.fullsizebronco.com/forum/...ad.php?t=42192

kaspercolorado · 12-05-2012, 02:31 PM

Quote:

Originally Posted by wdford

What was the last thing you did before this happened? Whya was all that other stuff changed, to resolve this issue?

nothing i bought it and it had this problem and im trying to fix it

96EB5.8 · 12-06-2012, 01:08 PM

Check the fuel pressure when this happens if it drops it is the pump in the frame rail. if not it is probably the tfi module or the pick up in the dist.

FSB BOSS · 12-06-2012, 10:57 PM

i had the same problem. turns out it was my icm all together was bad. take it off and see if the glue underneath is cracked or melting. thats 1 sign its bad. but only 30$

Kansas Wanderer · 12-07-2012, 03:01 AM

Also check fuel pressure when this happens. My 86 would run fine for about 15 to 30 minutes then die. Fuel pressure was fine cold but the regulator failed when warm. I agree with the other posts too.

**Seattle FSB** · 12-07-2012, 09:36 AM

For remote mounting of the Gray Distributor Mount Push Start TFI ICM, all you need is a remote mount heat sink with this sweet harness...

RJM Injection Technologies Remote TFI Harness

I also agree with checking the fuel pressure first. And, as always, check for Diagnostic Trouble Codes.

12-05-2012, 01:09 PM	#1
kaspercolorado Registered User Join Date: Dec 2012 Location: colorado springs,colorado Posts: 6 iTrader: (0) Bronco Info: 1986 fullsize xlt 5.0	86 full size xlt 5.0 I just bought a 86 xlt fullsize 5.0. Here's my issue I have changed my tank fuel pump, both fuel filters, oil change, distributor, cleaned the injectors, re- timed, and ran a fuel pressure test. The only mod I have not done myself is put on roller rocker racing heads. Now the problem is it will drive for a good 30 min but when my thermostat gets to about 190 degrees or hotter it just wants to die. It will idle fine but when I accelerate she wants to die and starts to sputter like she is not getting gas and in some cases she just dies completely and I have to wait for her to cool down to start again. I want to know if this may be from the ignition module getting too hot since it is on the distributor and that gets wicked hot. Is there a way to move the module or get one that has a higher heat resentance or is there something else that could be wrong? I love this girl and want to get her running like a champ again so she can play in the mud please help me thank you!!

12-05-2012, 01:25 PM	#2
wdford Fullsize Member Join Date: Feb 2011 Location: Rancho Cordova, CA Posts: 152 iTrader: (0) Bronco Info: 1995 EB 351W, E40D	What was the last thing you did before this happened? Whya was all that other stuff changed, to resolve this issue? __________________

12-05-2012, 01:30 PM	#3
JBfab Fullsize Member Join Date: Oct 2010 Location: Emerald, PA Posts: 1,984 iTrader: (8) Bronco Info: 94 C150, 351/zf,5"lift,35" xterains,flow40, mac headers,sag swap, elec fan, 4WDB	Here you go for relocating the tfi http://www.fullsizebronco.com/forum/...ad.php?t=42192 __________________ It's not custom if you bought it from a catalog! Visit my build thread- http://www.fullsizebronco.com/forum/...d.php?t=211825

12-07-2012, 09:36 AM	#8
Seattle FSB Fullsize Member Join Date: May 2007 Location: Seattle, WA Posts: 3,251 iTrader: (4) Bronco Info: 1990 EB FSB, MAF, 6.7L, E4OD, 4" Rancho, 4.56, 33" on 15x10 Alcoa's	For remote mounting of the Gray Distributor Mount Push Start TFI ICM, all you need is a remote mount heat sink with this sweet harness... *RJM Injection Technologies Remote TFI Harness* I also agree with checking the fuel pressure first. And, as always, check for Diagnostic Trouble Codes. __________________ 1990 Bronco, MAF, 408 Stroker, Level 10 E4OD, Currie F9+, Electric Boost Brakes, *lots more...*

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12-06-2012, 01:08 PM	#5
96EB5.8 Registered User Join Date: Jul 2012 Location: florida Posts: 110 iTrader: (0) Bronco Info: 96 eb 351 auto	Check the fuel pressure when this happens if it drops it is the pump in the frame rail. if not it is probably the tfi module or the pick up in the dist.

12-06-2012, 10:57 PM	#6
FSB BOSS Registered User Join Date: Aug 2012 Posts: 107 iTrader: (0) Bronco Info: 1985 F-150 4x4 - 351w, 33's	i had the same problem. turns out it was my icm all together was bad. take it off and see if the glue underneath is cracked or melting. thats 1 sign its bad. but only 30$

12-07-2012, 03:01 AM	#7
Kansas Wanderer Registered User Join Date: Jun 2011 Location: Wichta Kansas Posts: 4 iTrader: (0) Bronco Info: 1986 Bronco XLT 302 AOD mostly stock, Sixlitre tuneup, rebuilt BW 1345 Tcase	Also check fuel pressure when this happens. My 86 would run fine for about 15 to 30 minutes then die. Fuel pressure was fine cold but the regulator failed when warm. I agree with the other posts too.

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