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  • SN95 4.6L Mustang Tech

An Engine Problem, But No Trouble Codes

  • Thread starter Thread starter Crzyhrse
  • Start date Start date Aug 18, 2006

Crzyhrse

Active Member
Dec 23, 2004
0
2
38
Seattle, WA
Aug 18, 2006
#1
  • Aug 18, 2006
  • #1
I've only had this happen twice in the past 1 week. Never happened before. Under hard acceleration shifting from 2nd to 3rd gear I get a bog in the engine, and it feels like their is something clogging up the exhaust system as the tone of it changes and sounds like their is something blocking the exhaust way. The "SES" light flashes on and off and then after about 30 seconds the engine is fine again. I hooked up my Predator but no trouble codes showed up. Traction Control was off. Any ideas?
 

nwapache

New Member
Jun 27, 2006
313
0
0
Seattle,WA
Aug 18, 2006
#2
  • Aug 18, 2006
  • #2
So, is it WOT? only from 2-3? if it was under max load at wot I would guess shortage in fuel system maybe? fyi, the last car club challenge is tommorow at bremerton raceway....interested? pm me
 

Crzyhrse

Active Member
Dec 23, 2004
0
2
38
Seattle, WA
Aug 18, 2006
#3
  • Aug 18, 2006
  • #3
It just happen to be a couple times I gunned it from 2nd gear into third and then the engine problem ocurred. I've only got afew mods. X-pipe, Catback, C@L Tru-Flow Intake with MAF, and Predator custom tune.
 
K

Kilgore Trout

Fried or Broiled ?
10 Year Member
Mar 30, 2005
4,749
95
134
Aug 18, 2006
#4
  • Aug 18, 2006
  • #4
Clogged fuel filter?
 

Crzyhrse

Active Member
Dec 23, 2004
0
2
38
Seattle, WA
Aug 18, 2006
#5
  • Aug 18, 2006
  • #5
My Mach has 16,500 miles on it. What's the maintenance schedule for changing the fuel filter?
 

bert96

New Member
Jan 26, 2006
109
0
0
st-jean-sur-richelieu
Aug 18, 2006
#6
  • Aug 18, 2006
  • #6
Kilgore Trout said:
Clogged fuel filter?
Click to expand...


Change your filter! i had almost the same problem,i changed my fuel filter and now everything fine.
 

tjmaxx

Member
Jun 21, 2004
157
3
19
Aug 19, 2006
#7
  • Aug 19, 2006
  • #7
It shouldnt need it yet but it sounds like the fuel fileter.
 

BlackenedSVT

Active Member
Jan 18, 2004
1,841
7
38
New Jersey
Aug 19, 2006
#8
  • Aug 19, 2006
  • #8
Fuel filters shoudl be changed about every 15k miles. While it does sound fuel related, i'd be surprised if ur filter is clogged at 16k miles already. Most people can go like 60k on the same filter... Hell i work at BMW and a fuel filter change isn't even on the maintenance. They recommend changing them every 100k miles.

But BMW does a lot of stupid things like that. I change my fuel filter on my stang every 15k though. Its only a $10 part and very simple to do yourself.

Maybe could you get some live data feeding as you drive the car and the problem occurs? Maybe check the fuel trims? It definately sounds fuel related but im not sure what it would be. Possibly a clogged injector...gives u good fuel pressure until you hit WOT then the clog prevents you from adding more fuel to the cylinder or cylinders Run some seafoam through that bitch =)
 

tjmaxx

Member
Jun 21, 2004
157
3
19
Aug 19, 2006
#9
  • Aug 19, 2006
  • #9
Thats actually what I was thinking, running some seafoam through it should burn up a clog
 

CRZYHRSGT

New Member
Feb 14, 2004
240
0
0
5.7 miles north of THE Ohio State University
Aug 19, 2006
#10
  • Aug 19, 2006
  • #10
UDTBadkarma said:
Fuel filters shoudl be changed about every 15k miles. While it does sound fuel related, i'd be surprised if ur filter is clogged at 16k miles already. Most people can go like 60k on the same filter... Hell i work at BMW and a fuel filter change isn't even on the maintenance. They recommend changing them every 100k miles.

But BMW does a lot of stupid things like that. I change my fuel filter on my stang every 15k though. Its only a $10 part and very simple to do yourself.

Maybe could you get some live data feeding as you drive the car and the problem occurs? Maybe check the fuel trims? It definately sounds fuel related but im not sure what it would be. Possibly a clogged injector...gives u good fuel pressure until you hit WOT then the clog prevents you from adding more fuel to the cylinder or cylinders Run some seafoam through that bitch =)
Click to expand...

I work for VW/Audi and they're the same way. I believe they call them a "lifetime filter" which, as you said for BMW, translates to 100k. The only ones that get done as part of a maintenance is the TDi (diesel) and that's every 20k.

I like to stick to the 15k increment. Our fuel filters are extremely small (compared to the German ones that I'm used to which are about the size of a Foster's oil can) so they can't contain that much media. Plus, considering the price of it, I consider it cheap preventative maintenance.
 

Crzyhrse

Active Member
Dec 23, 2004
0
2
38
Seattle, WA
Aug 19, 2006
#11
  • Aug 19, 2006
  • #11
Yep, I think I'll do both. Some Seafoam and get the fuel filter changed also. Thanks alot for the help everyone.
 

1fast03pony

Member
Jul 1, 2003
749
0
17
New york
Aug 19, 2006
#12
  • Aug 19, 2006
  • #12
My car did the same thing. New fuel filter, all is good.
 

atari

New Member
Aug 10, 2005
15
0
0
Canal Winchester, Ohio
Aug 19, 2006
#13
  • Aug 19, 2006
  • #13
I have been told to change plugs and oil after seafoam. I dont know myself but I have a can in my hand and I think I will change the oil at least.
 
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