running so rich! its rediculous 10 mpg!!! help!

2000stangGT · June 23rd, 2006, 11:10 PM

my mustang is running so rich its sad. i just bought it a week ago. everything should have been fine but no its not. im getting 10-12 mpg with city and highway driving. what could be causing this? i have no cels. only mod i know of is a bassani catback. i can get the car into the shop until 2 weeks. is there anything i can do? im spending 100 a week on gas. help!

Drgnracin72 · June 23rd, 2006, 11:37 PM

go get a custom tune thatll help it ou ta lot where are you from?

2000stangGT · June 24th, 2006, 12:57 AM

im from ct. its a not a tuning issue. theres somethere really wrong with the car. it only had a bassani catback. im driving it liek a baby. shifting at 2-2500 all the time. on a warm start the car turns over then immediately shuts off and backfires.

Drgnracin72 · June 24th, 2006, 02:35 AM

well if you get a tune they can equal out the fuel tables the make the car run not rich

2000stangGT · June 24th, 2006, 12:46 PM

some PART is not functioning right. i know some stuff about fuel systems but not alot. i was inquireing that parts could be broken to make a car run that rich. a tune is not going to fix a busted injector or o2 sensor...

Roadhawg · June 24th, 2006, 03:27 PM

Well I would start by checking each spark plug and check thier condition....

Drgnracin72 · June 24th, 2006, 04:45 PM

well i would start ooking right there and see if you can find it. but catback themselves would not change that. thats strnge. anyways good lucj and i hope ya get it figured out.

mdvaldosta · June 24th, 2006, 04:57 PM

I'd start with the plugs and front o2 sensors. 02's could be bad and not triggering a light.

Casper98GT · June 24th, 2006, 07:17 PM

but headers themselves would not change that

Im lost, who said anytihng about headers??? Maybe i missed something..

Im guessing by now you have gone through a few tanks of gas and actually know youre getting 10-12 MPG.

Yes, check the plugs. Check youre air filter, check youre fuel filter. GIVE IT A TUNE UP.... How many miles? Check youre MAF. does it run good? Bad? Give us some more problems youre having. If you slowly accelerate does it feel good, if you get right into the gas and give her hell, does it skip, fall on its face.

No lights on doesnt mean much, maybe the person you bought it from yanked the bulb. Because they too were having problems. Run a KOER test on it.

Better yet, bring it to a dealership and let them run a few tests on it.

Also you said on a warm start, it fires up and then dies right after>? Does it backfire, then die. Or die and backfire on its way out?

Does the car still have cats or not?

Casper...

Casper98GT · June 24th, 2006, 07:19 PM

PS. give me youre VIN, im gonna do a little searching..

Drgnracin72 · June 24th, 2006, 07:49 PM

i mean t cat back

97snakercin · June 26th, 2006, 12:17 PM

HEY! I had a problem similar to yours once. I had bottomed out pretty hard and nailed my catalytic conv..... it promptly shattered and lodged chunks of it all up and down my exhuast all the way into my mufflers. My exhaust was getting so hot it fried one o2 sensor and discolored my mufflers and the shielding on the bottom of my car. Plus it was melting pieces of the cat material and i know they withstand some intense heat. Get your car up on a rack and get under it. Do a bump test (bang on ur exhaust pipes along the length of them to include mufflers) to see if there are any loose items in your exhaust somewhere. Good luck man!

June 23rd, 2006, 11:10 PM	#1
2000stangGT Enthusiast 2000 Mustang Gt 13.56 @ 106 Join Date: Jun 2006 Location: CT Posts: 806 iTrader: 0 reviews	running so rich! its rediculous 10 mpg!!! help! my mustang is running so rich its sad. i just bought it a week ago. everything should have been fine but no its not. im getting 10-12 mpg with city and highway driving. what could be causing this? i have no cels. only mod i know of is a bassani catback. i can get the car into the shop until 2 weeks. is there anything i can do? im spending 100 a week on gas. help!

June 23rd, 2006, 11:37 PM	#2
Drgnracin72 I Post Entirely Way Too Much Join Date: Jan 2006 Location: somewhere in oklahoma Posts: 10,635 iTrader: 2 reviews	go get a custom tune thatll help it ou ta lot where are you from? __________________ RIP ΜΟΛΩΝ ΛΑΒΕ Political Correctness is a doctrine, fostered by a delusional, illogical, liberal minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end. One Big Ass Mistake America SHEEPDOGS

June 24th, 2006, 12:57 AM	#3
2000stangGT Enthusiast 2000 Mustang Gt 13.56 @ 106 Join Date: Jun 2006 Location: CT Posts: 806 iTrader: 0 reviews	im from ct. its a not a tuning issue. theres somethere really wrong with the car. it only had a bassani catback. im driving it liek a baby. shifting at 2-2500 all the time. on a warm start the car turns over then immediately shuts off and backfires. __________________ JLT - Accufab - MPH Heads - VT Stage 2 N/A cams Manley Valves/Springs - Centerforce Dual Friction BBK LT's - BBK o/r H - Bassani catback FRPP 4.10s - XCAL2 - BBK UDP's 306rwhp/333rwtq

June 24th, 2006, 02:35 AM	#4
Drgnracin72 I Post Entirely Way Too Much Join Date: Jan 2006 Location: somewhere in oklahoma Posts: 10,635 iTrader: 2 reviews	well if you get a tune they can equal out the fuel tables the make the car run not rich __________________ RIP ΜΟΛΩΝ ΛΑΒΕ Political Correctness is a doctrine, fostered by a delusional, illogical, liberal minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end. One Big Ass Mistake America SHEEPDOGS

June 24th, 2006, 12:46 PM	#5
2000stangGT Enthusiast 2000 Mustang Gt 13.56 @ 106 Join Date: Jun 2006 Location: CT Posts: 806 iTrader: 0 reviews	some PART is not functioning right. i know some stuff about fuel systems but not alot. i was inquireing that parts could be broken to make a car run that rich. a tune is not going to fix a busted injector or o2 sensor... __________________ JLT - Accufab - MPH Heads - VT Stage 2 N/A cams Manley Valves/Springs - Centerforce Dual Friction BBK LT's - BBK o/r H - Bassani catback FRPP 4.10s - XCAL2 - BBK UDP's 306rwhp/333rwtq

June 24th, 2006, 03:27 PM	#6
Roadhawg Regular Join Date: Dec 2005 Location: Chesapeake, VA Posts: 431 iTrader: 0 reviews	Well I would start by checking each spark plug and check thier condition.... __________________ 2003 Mustang Mach1 1995 Thunderbird LX 4.6L; 1995 Mustang 4.2L; Eaton MPX Supercharger, 11.61 @ 118mph

June 24th, 2006, 04:45 PM	#7
Drgnracin72 I Post Entirely Way Too Much Join Date: Jan 2006 Location: somewhere in oklahoma Posts: 10,635 iTrader: 2 reviews	well i would start ooking right there and see if you can find it. but catback themselves would not change that. thats strnge. anyways good lucj and i hope ya get it figured out. __________________ RIP ΜΟΛΩΝ ΛΑΒΕ Political Correctness is a doctrine, fostered by a delusional, illogical, liberal minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end. One Big Ass Mistake America SHEEPDOGS

June 24th, 2006, 04:57 PM	#8
mdvaldosta MM Fanatic 2002 Mustang GT 11.47@120.58 Join Date: Aug 2005 Location: Valdosta, GA Posts: 3,940 iTrader: 0 reviews	I'd start with the plugs and front o2 sensors. 02's could be bad and not triggering a light.

June 24th, 2006, 07:19 PM	#10
Casper98GT Hardcore Enthusiast Join Date: Aug 2005 Location: NEW HAMPSHIRE Posts: 2,393 iTrader: 0 reviews	PS. give me youre VIN, im gonna do a little searching.. __________________ 91 LX, 5spd. Ex:Toyota/Ford tech Marine Machinery Technician, Department of Defense.

June 24th, 2006, 07:49 PM	#11
Drgnracin72 I Post Entirely Way Too Much Join Date: Jan 2006 Location: somewhere in oklahoma Posts: 10,635 iTrader: 2 reviews	i mean t cat back __________________ RIP ΜΟΛΩΝ ΛΑΒΕ Political Correctness is a doctrine, fostered by a delusional, illogical, liberal minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end. One Big Ass Mistake America SHEEPDOGS

June 26th, 2006, 12:17 PM	#12
97snakercin Newbie Join Date: Jun 2006 Location: Harrison Arkansas Posts: 47 iTrader: 0 reviews	HEY! I had a problem similar to yours once. I had bottomed out pretty hard and nailed my catalytic conv..... it promptly shattered and lodged chunks of it all up and down my exhuast all the way into my mufflers. My exhaust was getting so hot it fried one o2 sensor and discolored my mufflers and the shielding on the bottom of my car. Plus it was melting pieces of the cat material and i know they withstand some intense heat. Get your car up on a rack and get under it. Do a bump test (bang on ur exhaust pipes along the length of them to include mufflers) to see if there are any loose items in your exhaust somewhere. Good luck man! __________________ The Impossible is really only unatainable in your mind.

Remove Advertisements Sponsored Links
Ford Mustang Forum Advertisement

Threads Similar to: running so rich! its rediculous 10 mpg!!! help!
Thread	Thread Starter	Forum	Replies	Last Post
running really rich	90pro5.0	5.0 Mustangs	4	October 5th, 2007 06:30 PM
car is running bad rich	1quickstang02	99-04	5	September 25th, 2007 08:36 PM
Running Rich	dezzrat1	94-95	2	June 22nd, 2007 07:15 PM
87 GT running way too rich?	SDHW44	5.0 Mustangs	4	April 19th, 2007 09:08 PM
Running Rich	87Stang	5.0 Mustangs	14	March 7th, 2007 10:51 PM

All times are GMT -4. The time now is 04:21 PM.
Contact Us - Modded Mustangs : Ford Mustang Forums - Privacy Statement - Top
Modded Mustangs is ©2005-2008, All Rights Reserved, And is Not Affiliated with Ford Motor Company. Forum is powered by vBulletin ©2000 - 2012, Jelsoft Ent. Ltd. & SEO by vBSEO 3.3.2 ©2009, Crawlability, Inc.