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Running Rich

  • Thread starter Thread starter 87stang92sho
  • Start date Start date May 29, 2017
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87stang92sho

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May 7, 2017
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May 29, 2017
#1
  • May 29, 2017
  • #1
my mustang gt 1987 is still running very rich. I have replaced the o2 sensors which were caked in gasoline. I also put the smog pipe on the back of the engine so there will be no air leaks, ive also tightened my collectors from the headers down because they were leaking before. Now with all that fixed its still running bad, the smog system isnt hooked up and there is no cats. Please help!!!
 

mikestang63

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#2
  • May 29, 2017
  • #2
your car is going to run richer because you took the cats off but not to the extreme you mention. Have you run the codes.
 
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87stang92sho

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May 30, 2017
#3
  • May 30, 2017
  • #3
mikestang63 said:
your car is going to run richer because you took the cats off but not to the extreme you mention. Have you run the codes.
Click to expand...
No I actually just ordered a code reader, do you think it will tell me anything that could solve this?
 

a91what

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#4
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The engine codes will tell you what to check. Once you get those then the troubleshooting begins.
 

Mustang5L5

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#5
  • May 30, 2017
  • #5
Start with the codes, but yanking the cats off usually gives you that gassy fume smell that a lot of people associate with running rich. It was strong enough on my car that I had to put the cats back on.
 
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a91what

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#6
  • May 30, 2017
  • #6
+1 I did as well
 
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87stang92sho

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May 30, 2017
#7
  • May 30, 2017
  • #7
Mustang5L5 said:
Start with the codes, but yanking the cats off usually gives you that gassy fume smell that a lot of people associate with running rich. It was strong enough on my car that I had to put the cats back on.
Click to expand...
a91what said:
The engine codes will tell you what to check. Once you get those then the troubleshooting begins.
Click to expand...
If the codes tell me its cats or a emission thing, is there a way i can clear the code or bypass it to make the engine run fine. I honestly don't know what else to do the inside of the exhaust pipes are cakes in black gas and if u put it in reverse the smell will make ur eyes water and its very hard to breathe.
 

mikestang63

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#8
  • May 30, 2017
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87stang92sho said:
If the codes tell me its cats or a emission thing, is there a way i can clear the code or bypass it to make the engine run fine. I honestly don't know what else to do the inside of the exhaust pipes are cakes in black gas and if u put it in reverse the smell will make ur eyes water and its very hard to breathe.
Click to expand...

No- there is no magical way to fix the car running rich and clearing the codes does nothing, as the codes will return if the problem remains.

Run the codes
That will tell you where to start

You also need to tell us more about the engine- stock? any other emissions/EGR removed?
 
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87stang92sho

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#9
  • May 30, 2017
  • #9
mikestang63 said:
No- there is no magical way to fix the car running rich and clearing the codes does nothing, as the codes will return if the problem remains.

Run the codes
That will tell you where to start

You also need to tell us more about the engine- stock? any other emissions/EGR removed?
Click to expand...
Do you want to know modifications or just everything that is removed from emissions?
 

Mustang5L5

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#10
  • May 30, 2017
  • #10
87stang92sho said:
Do you want to know modifications or just everything that is removed from emissions?
Click to expand...


Everything.
 
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87stang92sho

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#11
  • May 30, 2017
  • #11
Mustang5L5 said:
Everything.
Click to expand...
It has a cold air intake, headers, downpipe, h-pipe and mufflers dumped no cats h-pipe and downpipe. Thats all really in modifications besides normal maintenance things. The smog pump wires to the computer im guessing thats where they lead have been cut. I didn't do it my grandmothers mechanic did it years ago. So I basically took everything off with the pump besides the pipe that plugs into the headers. The egr valve is still on.
 

Mustang5L5

That is…until I whipped out my Bissell
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May 30, 2017
#12
  • May 30, 2017
  • #12
Still running the speed density computer?

Pull the codes. 1987 doesn't have a function check engine light, so you'd never know if there was a major issue
 
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87stang92sho

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May 7, 2017
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May 30, 2017
#13
  • May 30, 2017
  • #13
Mustang5L5 said:
Still running the speed density computer?

Pull the codes. 1987 doesn't have a function check engine light, so you'd never know if there was a major issue
Click to expand...
Yes I really rather not put on the mass air conversation. I thought it didn't have a check engine light ether someone told me it did. I guess thats all i can do it check the codes. Now would having lots of gas caked in black in the exhaust cause me to still smell gas and see it or do you think it would be very minimal if it was running perfectly?
 

Mustang5L5

That is…until I whipped out my Bissell
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May 30, 2017
#14
  • May 30, 2017
  • #14
Your car has a check engine light...but it's not wired up properly and functional. It was made functional when mass air came around. No idea why Ford did this.

So you'll need to pull codes
 
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87stang92sho

Active User
May 7, 2017
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May 30, 2017
#15
  • May 30, 2017
  • #15
Mustang5L5 said:
Your car has a check engine light...but it's not wired up properly and functional. It was made functional when mass air came around. No idea why Ford did this.

So you'll need to pull codes
Click to expand...
Ok so how do i pull the codes once my code reader comes in?
 
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87stang92sho

Active User
May 7, 2017
52
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May 30, 2017
#16
  • May 30, 2017
  • #16
Mustang5L5 said:
Your car has a check engine light...but it's not wired up properly and functional. It was made functional when mass air came around. No idea why Ford did this.

So you'll need to pull codes
Click to expand...
Ok so how do i pull the codes once my code reader comes in?
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,146
17,842
224
Massachusetts
May 30, 2017
#17
  • May 30, 2017
  • #17
What code reader did you get? Innova 3145?
 
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87stang92sho

Active User
May 7, 2017
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May 30, 2017
#18
  • May 30, 2017
  • #18
Mustang5L5 said:
What code reader did you get? Innova 3145?
Click to expand...
Yes
 

jrichker

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#19
  • May 30, 2017
  • #19
Dump codes sticky

Look at the top of the 5.0 Tech forum where the sticky threads are posted. One of them is how to dump the computer codes. Codes may be present even if the CEL (Check Engine Light) isn’t on. You don’t need a code reader or scanner – all you need is a paper clip, or if your lady friend has a hair pin, that will do the job.
I highly suggest that you read it and follow the instructions to dump the codes. http://www.stangnet.com/mustang-forums/threads/how-to-pull-codes-from-eec4.889006/

This will work with the Innova 3145 and I have used it that way many times. The basic procedure is the same except that the Innova 3145 replaces all the jumpers and wires that you would use if you didn't have one.

Just be sure to carefully read the instructions through a couple of times until they make sense and you will be good to go.
 
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87stang92sho

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May 7, 2017
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May 31, 2017
#20
  • May 31, 2017
  • #20
Mustang5L5 said:
What code reader did you get? Innova 3145?
Click to expand...
What are these called and what do they do? They were connected to the smog system and the lines where cut for both of these.
 
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