91 GT fox overheating

Jim925 · Aug 29, 2018

New 91 GT 5.0 motor with 97 explorer intake and plenum, headers get red hot and valve covers real hot to the touch in less then a min idle, timing set, vacuum good, not sure if I'm missing a step, have the factoryTB, and egr plugs in back of heads, EGR still on TB, coolant line from TB to intake has no spot to go, not sure if that's my problem or not?

Mustang5L5 · Aug 29, 2018

If the headers are getting red hot, you are running lean.

Jim925 · Aug 29, 2018

Timing is set, vacuums. Is good, I'm running stock TB on the explorer intake, removed the EGR tube and plugged heads, coolant line from the TB to intake is not hooked up,

Mustang5L5 · Aug 29, 2018

Fuel pressure? Are o2's installed? Do you have any codes that would point to something that would control fuel/timing curves such as coolant sensor or o2?

Jim925 · Aug 29, 2018

I don't have any code readers, the car came with 2 ECU, the original one A9L is unhooked and the A9S is hooked up, also not sure if I have to drill a spot on the intake for the TB coolant line.

Mustang5L5 · Aug 29, 2018

TB coolant line won't make a difference here. This doesn't sounds like a typical water temp overheating issue.

It really sounds like you are very lean. Is your firing order correct? have you pulled plugs to make sure all plugs are firing? Inspect the plugs to see if they look white hot?

Jim925 · Aug 29, 2018

Also I don't have that censor that goes inside the oil pan hooked up, I will inspect plugs now,

Jim925 · Aug 29, 2018

This pic is plug from back left of motor, #8 plug I belive

Jim925 · Aug 29, 2018

#8 plug

a91what · Aug 29, 2018

replace the plugs with a standard copper plug

Jim925 · Aug 29, 2018

And this will make it to where my headers and valve covers won't get extremely hot?

General karthief · Aug 29, 2018

This is the first step in resolving your issue ( stock copper core plugs) make sure your timing is 10-12° and check for codes, there is a thread on checking codes in the 5.0 tech/how to forums, likely not any one thing is going to work.

a91what · Aug 29, 2018

Glowing headers usually says retarded timing to me.... how did you set the timing? Did you remember to pull the spout when you set it?

Jim925 · Aug 29, 2018

Is the spout the little plug in connector off of the distributor wires?

General karthief · Aug 29, 2018

Jim925 · Aug 29, 2018

Then yes

General karthief · Aug 29, 2018

What did you set it at?

Jim925 · Aug 29, 2018

I have timing set to 12

Jim925 · Aug 29, 2018

When I first started the car the headers would get hot enough to almost melt within a min or less, after I set the timing it took about 3 min to get red hot but doesn't get as red.

Mustang5L5 · Aug 29, 2018

What plugs are those? Also it's too far away to see the electrode tip. Really need a pic like this

91 GT fox overheating

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That is…until I whipped out my Bissell

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That is…until I whipped out my Bissell

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That is…until I whipped out my Bissell

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wonder how much it would cost to ship you a pair

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wonder how much it would cost to ship you a pair

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wonder how much it would cost to ship you a pair

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Member

That is…until I whipped out my Bissell

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