New Old Fox

[Driver3]

Just purchased, as in yesterday, a 1987 Mustang LX Convertible 5.0
So far car is awesome except for mild idle surge issue which I've already been researching.
I'll be sure to have questions going forward

 

[AeroCoupe]

First thing you need to do is check for codes.

Electrical Thread 'How To Pull Codes From EEC-IV In 86- 95 5.0 Mustangs'

Jan 27, 2016

@Noobz347 - The code dump procedure isn't in the sticky - you may want to add it...



Dump the codes: Codes may be present even if the Check Engine Light (CEL) isn't on.

Dumping the computer diagnostic codes on 86-95 Mustangs

Revised 26-July-2011. Added need to make sure the clutch is pressed when dumping codes.

Codes may be present even if the check engine light hasn’t come on, so be sure to check for them.

Here's the way to dump the computer codes with only a jumper wire or paper clip and the check engine light, or test light or voltmeter. I’ve used it for...

• jrichker
• Replies: 10
• Forum: Fox 5.0 Mustang Tech

• 

The solution to your problem is most likely in this thread. Read it all the way through and then work through the instructions methodically from start to end until the problem is fixed.

Thread 'Cranks OK, but No Start Checklist for Fuel Injected Mustangs'

May 22, 2006

Cranks OK, but No Start Checklist for Fuel Injected 5.0 Mustangs model years 1986-1995

A word about this checklist before you start: it is arranged in a specific order to put the most likely failure items first. That will save you time, energy and money. Start at the top of the list and work your way down. Jumping around will possibly cause you to miss just what you need to see to find and fix the problem. Don’t skip any steps because the next step depends on the last step working correctly.

Revised 26-Jul-2017 to add fuse link diagram.

All text applies to...

• jrichker
• Replies: 93
• Forum: Fox 5.0 Mustang Tech

• 

 

[General karthief]

Very unusual color, nice score!
First thing I'd do is go through all the vacuum lines and replace as necessary, most idle issues are bad vacuum lines.
Join us down in the fox forums,

 

[Driver3]

I've already perused that thread, a wealth of information there.
According to what I've been able to research there were only 170 of this color and only 70 convertibles.
The car has zero rust, including the undercarriage, and all original besides the wheels. Remarkable for a northern car. Obviously has never seen snow or salt.