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  • 1996 - 2004 SN95 Mustang -General/Talk-

Strong Gas/exhaust Smell At Idle

  • Thread starter Thread starter ace305
  • Start date Start date Oct 25, 2017
A

ace305

Active Member
Dec 28, 2011
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Oct 25, 2017
#1
  • Oct 25, 2017
  • #1
I purchased the car used and it runs fine. I just find the exhaust has a stronger smell than most cars. Is it a characteristic of these cars? I have a 2001 Bullitt. From what I know the only mods are h pipe and Borla exhaust. Is there something I can change to help with this?

thanks
 

DSG_Mach

Active Member
Jul 23, 2016
115
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Oct 25, 2017
#2
  • Oct 25, 2017
  • #2
Does it have catalytic converters?
 
A

ace305

Active Member
Dec 28, 2011
171
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Oct 25, 2017
#3
  • Oct 25, 2017
  • #3
DSG_Mach said:
Does it have catalytic converters?
Click to expand...
looks like 2 on the factory mid pipe
 

DSG_Mach

Active Member
Jul 23, 2016
115
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Oct 25, 2017
#4
  • Oct 25, 2017
  • #4
ace305 said:
looks like 2 on the factory mid pipe
Click to expand...


Cats are inefficient when they are cold, so if you smell gas fume smell at cold engine temps they just aren't warmed up yet. If you smell rotten eggs when they are warm that's an indicator that the cats are going bad.

My mom's DeVille reeks of gasoline when it first starts but after it's warmed up it does not smell as strong.
 
A

ace305

Active Member
Dec 28, 2011
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Oct 25, 2017
#5
  • Oct 25, 2017
  • #5
well that is it. I only smell on cold start up. Thanks man
 

General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
Aug 25, 2016
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Oct 25, 2017
#6
  • Oct 25, 2017
  • #6
Have you scanned for codes?
I asked my mechanic about this and he said you should never smell gas at any time.
 
A

ace305

Active Member
Dec 28, 2011
171
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Oct 25, 2017
#7
  • Oct 25, 2017
  • #7
Hey thanks. Its just a heavy exhaust smell.
 

Mattstang04

15 Year Member
Sep 15, 2006
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St. Louis, MO
Oct 25, 2017
#8
  • Oct 25, 2017
  • #8
Maybe take off the mid pipe and see if someone gutted the cats. Is that h pipe aftermarket? Cuz stock h pipes came with 4 converters.

Sometimes people can bang the substrate out to make it look like it's got cats for inspections purposes.
 

Neuron

5 Year Member
Nov 6, 2016
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Oct 26, 2017
#9
  • Oct 26, 2017
  • #9
If the cats were gutted or worn out wouldn't you get a code from the O2 sensors servicing the cats?
 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
Admin Dude
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Oct 26, 2017
#10
  • Oct 26, 2017
  • #10
Neuron said:
If the cats were gutted or worn out wouldn't you get a code from the O2 sensors servicing the cats?
Click to expand...


Unless MIL eliminators were installed.
 

Neuron

5 Year Member
Nov 6, 2016
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Oct 28, 2017
#11
  • Oct 28, 2017
  • #11
Noobz347 said:
Unless MIL eliminators were installed.
Click to expand...
Agreed, OP said "From what I know the only mods are h pipe and Borla exhaust.", but he could be wrong.
 
A

ace305

Active Member
Dec 28, 2011
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Oct 28, 2017
#12
  • Oct 28, 2017
  • #12
thanks everyone. I only see 2 cats on the mid pipe. The O2 sensors dont have mill eliminators on them. Seems like its only during initial warming up of the car.
 

General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
Aug 25, 2016
27,945
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203
polk county florida
Oct 28, 2017
#13
  • Oct 28, 2017
  • #13
Nowhere here do I see where you have checked for codes.
 
A

ace305

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Dec 28, 2011
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Oct 28, 2017
#14
  • Oct 28, 2017
  • #14
karthief said:
Nowhere here do I see where you have checked for codes.
Click to expand...
i havent. I will have to take my car in to have it checked.
 

General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
Aug 25, 2016
27,945
10,584
203
polk county florida
Oct 28, 2017
#15
  • Oct 28, 2017
  • #15
 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
Admin Dude
Jan 4, 1985
43,134
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Box behind Walmart
Oct 29, 2017
#16
  • Oct 29, 2017
  • #16
Amazon product ASIN B005NLQAHSView: https://www.amazon.com/BAFX-Products-34t5-Bluetooth-Android/dp/B005NLQAHS/ref=sr_1_1?ie=UTF8&qid=1509291064&sr=8-1&keywords=OBDKey

Google App works with Iphone too:
https://play.google.com/store/apps/details?id=org.prowl.torque&hl=en

How crappy would it be to just pull your codes from your phone?
 
Reactions: General karthief
A

ace305

Active Member
Dec 28, 2011
171
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Oct 29, 2017
#17
  • Oct 29, 2017
  • #17
Noobz347 said:
Amazon product ASIN B005NLQAHSView: https://www.amazon.com/BAFX-Products-34t5-Bluetooth-Android/dp/B005NLQAHS/ref=sr_1_1?ie=UTF8&qid=1509291064&sr=8-1&keywords=OBDKey

Google App works with Iphone too:
https://play.google.com/store/apps/details?id=org.prowl.torque&hl=en

How crappy would it be to just pull your codes from your phone?
Click to expand...
AWESOME thanks I am gonna order that set up.
 
A

ace305

Active Member
Dec 28, 2011
171
17
28
Oct 29, 2017
#18
  • Oct 29, 2017
  • #18
Noobz347 said:
Amazon product ASIN B005NLQAHSView: https://www.amazon.com/BAFX-Products-34t5-Bluetooth-Android/dp/B005NLQAHS/ref=sr_1_1?ie=UTF8&qid=1509291064&sr=8-1&keywords=OBDKey

Google App works with Iphone too:
https://play.google.com/store/apps/details?id=org.prowl.torque&hl=en

How crappy would it be to just pull your codes from your phone?
Click to expand...
hey will this work for iphone with the app you sent?

Amazon product ASIN B07537GBSLView: https://www.amazon.com/Reader-compatible-Android-Windows-Devices/dp/B07537GBSL/ref=sr_1_3?s=automotive&ie=UTF8&qid=1509324774&sr=1-3&keywords=OBDII+Scan+Tool+ios
 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
Admin Dude
Jan 4, 1985
43,134
21,305
234
Box behind Walmart
Oct 29, 2017
#19
  • Oct 29, 2017
  • #19
ace305 said:
hey will this work for iphone with the app you sent?

Amazon product ASIN B07537GBSLView: https://www.amazon.com/Reader-compatible-Android-Windows-Devices/dp/B07537GBSL/ref=sr_1_3?s=automotive&ie=UTF8&qid=1509324774&sr=1-3&keywords=OBDII+Scan+Tool+ios
Click to expand...

It should.
 
A

ace305

Active Member
Dec 28, 2011
171
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28
Nov 1, 2017
#20
  • Nov 1, 2017
  • #20
Noobz347 said:
It should.
Click to expand...
Hey Noobz,

I took your advice. I got code P0420 and P0430
 
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