96 SHO stalling hard in hot weather - Taurus Car Club of America : Ford Taurus Forum
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post #1 of 48 (permalink) Old 05-01-2014, 10:47 PM Thread Starter
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Exclamation 96 SHO stalling hard in hot weather

My taurus stranded me 5 times today in horrific heat. I have NEVER had the car do anything like it did today. Before my car would very rarely miss and die at idle but today it died under hard acceleration and took a minute to start back up. I then took it on an 1/8th mile drive to see if the problem seemed gone and it was ok (i wasn't hard on it after that) so i managed to go probably 5 miles and then it started to lose power, then stall.
Got it to start back up and it went another 5 miles or so and it died again, started up after a few minutes and got another 3 miles and same thing. Then drove to a gas station to give the car a little break before trying to hit the highway again but it started missing hard. I managed to backup a very short distance and it died. Then it wouldn't start enough to stay running, it would miss hard and die. I managed to limp it over to a fence (felt like running on only a couple cylinders where it died as soon as i stopped) I had to pump the throttle to limp it over. After that i kept trying to start it for about an hour and couldn't get it to idle for more than 2 seconds.

So i got a tow truck to show up after exhausting all of my options and it started up in two tries (was like a 4 hour wait) and it made it all the way back home. (10 miles or so). but at a light i was a little harder on the throttle and it didnt have enough power so i let off to make sure i wouldnt kill it. It threw a code but i dont have the reader with me to check it. It didnt throw a code until the final ride home.

I know without me really testing much yet I can't be of much help, but does anyone have any thoughts on this with a SHO? I don't suspect i could have enough ****ty coils to cause it to die and it doesn't really make sense during driving.

I'm going to get some starting fluid so i can try to see if its fuel delivery problem, but now with this being my only car, i cant even trust it to get me anywhere. I'm pretty scared to drive it and get stranded. I was offered $350 for it but I obviously don't want to toss it yet when it may be pointed out by the code.

Also, this problem is not from the fuel level. I literally filled that thing up the day before.

So please shoot me some ideas or things i can try. I am so worried about this car that I cant even drive to my aunts funeral.

Also if anyone is interested in buying a welded 96 sho, i'm not against trying to just get out from under this thing.

96 SHO Silver aka Pocahontas 217k Welded, Stock
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post #2 of 48 (permalink) Old 05-01-2014, 11:34 PM
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Just a shot in the dark, maybe fuel pump on the way out, but working intermittently?

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post #3 of 48 (permalink) Old 05-02-2014, 12:20 AM
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Quote:
Originally Posted by Dirty White Bull View Post
Just a shot in the dark, maybe fuel pump on the way out, but working intermittently?
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post #4 of 48 (permalink) Old 05-02-2014, 05:04 AM
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Fuel pump or CCRM relay going out when getting hot. I had the same problem with my 94 taurus 3.8 awhile back. turned out to be CCRM.
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post #5 of 48 (permalink) Old 05-02-2014, 06:33 AM
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Fuel

Air

Spark

That's how engines go. They try to overcomplicate it. What is missing?

When the car dies, is there pressure in the fuel rail?

217k? in CHICAGO - i.e. rust belt - I would check the usual grounds for corrosion. Next to the computer on the firewall is probably the #1 suspect on a V8 SHO. #2 is the ground on the fender just behind the battery. #3 is the main wire from the battery to the starter.

Air - intake air temp sensor messed up. MAF dirty. TPS not reading correctly.

One of these ideas SHOuld get you back on track.

RICE - ITS WHATS FOR DINNER !

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post #6 of 48 (permalink) Old 05-02-2014, 01:50 PM Thread Starter
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Ok I checked the codes and I have P0307, P0171, P0174.

I do have one spare coil I can swap out with the cylinder 7misfire, bit what are your thoughts about both banks being lean? Bought starting fluid in case it stays dead for a long time. Testing spark sounds unusual with a cop setup. And I don't really know about the shader valve thing for testing fuel. And how can you test air?

Edit* it died again and started back up to make it the 5miles home. So its not only a hot day problem.

96 SHO Silver aka Pocahontas 217k Welded, Stock

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post #7 of 48 (permalink) Old 05-02-2014, 04:42 PM
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Have you tested fuel pressure?
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post #8 of 48 (permalink) Old 05-02-2014, 08:33 PM
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Originally Posted by galan747 View Post
Have you tested fuel pressure?
^^

This.

Take off the little black plastic cap on the small bike tire valve, on the fuel rail at the passenger's side by the pressure regulator.

Turn the key on for 5 seconds and turn off. Do it again. now go and take a small flat screwdriver or similar and depress the valve on the fuel rail.

It should squirt fuel so stand back a bit. No squirt = Bad fuel pump.

RICE - ITS WHATS FOR DINNER !

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post #9 of 48 (permalink) Old 05-03-2014, 09:41 AM
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Seeing as how you say it happened when it was Hot outside & after the engine was fully warmed up, IF your still using, or just before the problem began, bought Winter fuel, which has had its vapor pressure lowered for easier cold weather starts, that lower vapor pressure fuel on a Hot day, in a Hot engine can cause Vapor Lock!!!!

We are on a major north/south interstate route, so see this happen a lot this time of year during a hot spell, with folks from cold country headed south with winter fuel onboard!!!

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post #10 of 48 (permalink) Old 05-03-2014, 11:23 AM
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After doing some research on the codes...

Check the fuel pump, and fuel filter, replace as needed.

Then check the COPs, Plugs, and coil pack, replace as needed.

Then check your MAF Signal, then clean the MAF and TB. Check your EGR Valve, and PCV hose.

You may also have a vacuum leak.

I don't wanna see this SHO go into the wrong hands! Yes I saw your CL ad lol

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