Check Engine Light

zhunter · January 17th, 2006, 09:56 AM

im sure this is just a glitch in the electrical system, but i had the diagnostics ran on my '95 and they came back clean, yet the check engine light stays on, how can this be taken care of

lemon · January 17th, 2006, 10:01 AM

gas cap

... sometimes it can make the light turn on

99mustang232 · January 17th, 2006, 11:09 AM

If your CEL is illuminated you are probably thowing some sort of code, I would take it back to have the code re-scanned, if there is no code they should be able to clear it.

Twist 2 Go · January 17th, 2006, 04:04 PM

if the light stays on, there should be a dtc. either in memory or as a hard-fault. disconnect the neg battery cable for a few minutes and then drive the car and see if the light comes back on.

87vert · January 19th, 2006, 02:10 PM

Originally Posted by Twist 2 Go

if the light stays on, there should be a dtc. either in memory or as a hard-fault. disconnect the neg battery cable for a few minutes and then drive the car and see if the light comes back on.

bayareastangs · September 12th, 2006, 11:54 AM

Can someone help I have a 98 3.8 and the check engine light is on I cheked the codes and is giving me po171 system too lean bank 1 and po174 system too lean bank 2

I already replaced all 4 h02 sensors and did a tune up including new fuel filter but I still get the check engine light even after resetting it will light up after driving it for about 2 or 3 miles

Twist 2 Go · September 12th, 2006, 12:03 PM

vacuum leak or a bad maf sensor

bayareastangs · September 12th, 2006, 12:05 PM

that was what I was afraid off cause maf sensor is expensive and I dont know how to check for a vacuum leak

bayareastangs · September 15th, 2006, 02:09 AM

ok I replaced the MAF sensor and the light stayed off for about 2 days but it all of a suden turned on again.

jealousy · September 21st, 2006, 11:35 PM

90% of the time your light comes on its something to do with air polution control. ide suggest checking for vaccum leaks

bayareastangs · October 20th, 2006, 03:32 AM

Well its still giving me a code that reads system too lean bank 2 how do I fix this?

January 17th, 2006, 09:56 AM	#1
zhunter Newbie Join Date: Jan 2006 Location: Marion, VA Posts: 39 iTrader: 0 reviews	Check Engine Light im sure this is just a glitch in the electrical system, but i had the diagnostics ran on my '95 and they came back clean, yet the check engine light stays on, how can this be taken care of

January 17th, 2006, 04:04 PM	#4
Twist 2 Go Hardcore Enthusiast Join Date: Aug 2005 Location: Chesapeake, Virginia Posts: 1,716 iTrader: 0 reviews	if the light stays on, there should be a dtc. either in memory or as a hard-fault. disconnect the neg battery cable for a few minutes and then drive the car and see if the light comes back on. __________________ 88 Mustang Coupe 2006 FFW Richmond True Street Runner-Up www.rickscarcare.net

September 12th, 2006, 12:03 PM	#7
Twist 2 Go Hardcore Enthusiast Join Date: Aug 2005 Location: Chesapeake, Virginia Posts: 1,716 iTrader: 0 reviews	vacuum leak or a bad maf sensor __________________ 88 Mustang Coupe 2006 FFW Richmond True Street Runner-Up www.rickscarcare.net

September 21st, 2006, 11:35 PM	#10
jealousy Regular Join Date: Sep 2006 Posts: 120 iTrader: 0 reviews	90% of the time your light comes on its something to do with air polution control. ide suggest checking for vaccum leaks __________________

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January 17th, 2006, 10:01 AM	#2
lemon Enthusiast 1999 GT Rag Join Date: Aug 2005 Location: Charleston, SC Posts: 697 iTrader: 0 reviews	gas cap ... sometimes it can make the light turn on

January 17th, 2006, 11:09 AM	#3
99mustang232 MM Fanatic 1999 Ford Mustang V6 Join Date: Sep 2005 Location: newport news, va Posts: 3,745 iTrader: 0 reviews	If your CEL is illuminated you are probably thowing some sort of code, I would take it back to have the code re-scanned, if there is no code they should be able to clear it.

September 12th, 2006, 11:54 AM	#6
bayareastangs Newbie Join Date: Sep 2006 Location: Richmond Ca Posts: 4 iTrader: 0 reviews	Can someone help I have a 98 3.8 and the check engine light is on I cheked the codes and is giving me po171 system too lean bank 1 and po174 system too lean bank 2 I already replaced all 4 h02 sensors and did a tune up including new fuel filter but I still get the check engine light even after resetting it will light up after driving it for about 2 or 3 miles

September 12th, 2006, 12:05 PM	#8
bayareastangs Newbie Join Date: Sep 2006 Location: Richmond Ca Posts: 4 iTrader: 0 reviews	that was what I was afraid off cause maf sensor is expensive and I dont know how to check for a vacuum leak

September 15th, 2006, 02:09 AM	#9
bayareastangs Newbie Join Date: Sep 2006 Location: Richmond Ca Posts: 4 iTrader: 0 reviews	ok I replaced the MAF sensor and the light stayed off for about 2 days but it all of a suden turned on again.

October 20th, 2006, 03:32 AM	#11
bayareastangs Newbie Join Date: Sep 2006 Location: Richmond Ca Posts: 4 iTrader: 0 reviews	Well its still giving me a code that reads system too lean bank 2 how do I fix this?

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