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Redfoxx · 06-12-2007, 09:01 PM

ok today my check engine light came on ironically when i was on my way to order an oil pan for my Merkur.

i'm not to sure on what the problem is? i drove mostly on the interstate and then on out of town highway though i ended up racing an Evo VIII and my mechanical boost gauge pressure hose popped off. i ended up driving on a lot of gravel road to the auto salvage yard to and back. so when i got there i just slipped the hose back in, ordered the oil pan i needed, and headed back home...

...about 5 miles later i built up full boost pressure and the hose popped out again! i didn't notice the check engine light untill i got onto the interstate, and mind you i pay attention to my dashboard about every 5 sec. the engine wasn't making any weird noises or anything, and the stock boost gauge was reading fine.

someone at work said that it might be that my open air intake is to dirty but i don't think that it is, because i rubbed my finger over it and it seemed only dusty like it should be since it is an open air intake. then i was thinking that maybe it's because i'm due for an oil change and the gravel road and hard driving didn't make it any better, but i don't really know if that's why my check engine light should be on.

(...and yes, my gas cap is ON and tight as it's suppose to be)

StX221 · 06-12-2007, 09:04 PM

no sir, its cause t7 is more picky than a 5 year old that cant pick the damn ice cream flavor at baskin robins. gotta go over all 32 damn flavors 800 times before he can make up his mind.

the time you drove with the line unplugged for the boost gauge was probably enough to throw a random misfire code.

pull the code and i bet you get a P0300, or a P1300. both are random misfire's.

Redfoxx · 06-12-2007, 09:08 PM

pull the code? do you mean the check thing that the SID does everytime you start the car? if that's what you mean, the SID does it's check and says ok, but the check engine light is the only thing saying anything.

Palmer · 06-12-2007, 09:15 PM

Go to an Auto Zone, and borrow the OBD reader. It plugs into a port under your steering column.

That will "pull the code" and tell you what it is.

Redfoxx · 06-12-2007, 09:18 PM

Quote:

Originally Posted by Palmer

Go to an Auto Zone, and borrow the OBD reader. It plugs into a port under your steering column.

That will "pull the code" and tell you what it is.

ok, that's what i thought he ment.
and if it is just the misfire code because of my boost gauge, do i just need to unplug the battery to reset it or can the OBD II sensor do that for me?

Palmer · 06-12-2007, 09:19 PM

I think the reader can do it, but pulling the power is a good excuse to go and do some nice pulls in 3rd and 4th.

Red DIC · 06-12-2007, 09:19 PM

I don't answer these questions until codes have been pulled. Autozone and Advanced pull cels for free.

WyldSaabMan · 06-13-2007, 05:30 AM

yea the line popping off can definetly freak T7 out. Get the code, post it here. Clear the code, and make sure you secure that line to you gauge so it doesnt happen again, and then see what happens.

NahumCC · 06-13-2007, 05:49 AM

Put a zip tie line on your boost gauge line in the engine bay. You won't have to worry about blowing the line out. Suprised T7 didn't get angry with you over the missing air in the system.

StX221 · 06-13-2007, 03:58 PM

Quote:

Originally Posted by NahumCC

Suprised T7 didn't get angry with you over the missing air in the system.

have you been under a rock for the rest of the thread???
i am pretty sure that is what happened!

NahumCC · 06-13-2007, 07:09 PM

Quote:

Originally Posted by StX221

have you been under a rock for the rest of the thread???
i am pretty sure that is what happened!

I guess I was thinking it would throw more of a misfit than just misfires.......such as LHM.

SPG-GASM · 06-13-2007, 07:42 PM

blowing off the vaccum line is going to throw of the air devaition calculated to the air deviation actual. Thats pretty much saying that the air entering the system is not the correct amount of air that should be there from value reading of the MAF sensor. Yes, this will throw a CEL for a misfire.

StX221 · 06-13-2007, 07:54 PM

so, spg-gasm had to put all complex words in, but in simple terms, air in at filter, does not equal air in at the throttle plate....

like for example, the other night i got on the highway and cruised for a few miles (3 or 4) in 4th at like 65, waiting to nail it in 4th and watch the speed gain... when i finally nailed it, i saw a nasty boost spike to 25ish, and then flashing CEL. no misfire codes were stored, but it still thought there was a misfire, just due to the insane difference in pressure. car still runs like a dream though... its all just t7 being picky.

i think i remember that it has to read 200 or so "misfires" before the CEL stays lit though, otherwise it will just flash.

Redfoxx · 06-14-2007, 06:04 PM

went to Advance Auto today to use their OBD II reader and the code that was reading was P1110, which is 'fuel air metering'. so which i'm guessing is that the fuel/air meter is bad then, which is probably gona need a trip to the dealer...anyone want to loan me an arm and a leg?

Jameson · 06-14-2007, 06:09 PM

Quote:

Originally Posted by Redfoxx

went to Advance Auto today to use their OBD II reader and the code that was reading was P1110, which is 'fuel air metering'. so which i'm guessing is that the fuel/air meter is bad then, which is probably gona need a trip to the dealer...anyone want to loan me an arm and a leg?

$120 part and 5 mins to do yourself.

Red DIC · 06-14-2007, 06:21 PM

Quote:

Originally Posted by Redfoxx

'fuel air metering'. so which i'm guessing is that the fuel/air meter

Fuel air metering is controlled by your oxygen sensor, which would be your air/fuel "meter".

WyldSaabMan · 06-14-2007, 07:15 PM

that could definetly be caused by that line blowing off. Clear the code and see if it come back before spending lots of money.

always try the simple shit first

Palmer · 06-14-2007, 07:20 PM

What about the MAF?

SPG-GASM · 06-14-2007, 07:27 PM

thats what the code is for the MAF. Like what was described up above about the air deviation thing i said its going to cause the fuel trims to adjust to the loss of metered air in the system.

Redfoxx · 06-14-2007, 10:50 PM

Quote:

Originally Posted by WyldSaabMan

that could definetly be caused by that line blowing off. Clear the code and see if it come back before spending lots of money.

always try the simple shit first

ya, that's what i've been thinking about doing, now that i think about it would make more sense for it reading that code if that boost gauge hose popped out.

06-12-2007, 09:01 PM	#1
Redfoxx Flirting With TSL Addiction Join Date: Jan 2006 Location: Sioux Falls, SD Posts: 558	Check Engine Light! ok today my check engine light came on ironically when i was on my way to order an oil pan for my Merkur. i'm not to sure on what the problem is? i drove mostly on the interstate and then on out of town highway though i ended up racing an Evo VIII and my mechanical boost gauge pressure hose popped off. i ended up driving on a lot of gravel road to the auto salvage yard to and back. so when i got there i just slipped the hose back in, ordered the oil pan i needed, and headed back home... ...about 5 miles later i built up full boost pressure and the hose popped out again! i didn't notice the check engine light untill i got onto the interstate, and mind you i pay attention to my dashboard about every 5 sec. the engine wasn't making any weird noises or anything, and the stock boost gauge was reading fine. someone at work said that it might be that my open air intake is to dirty but i don't think that it is, because i rubbed my finger over it and it seemed only dusty like it should be since it is an open air intake. then i was thinking that maybe it's because i'm due for an oil change and the gravel road and hard driving didn't make it any better, but i don't really know if that's why my check engine light should be on. (...and yes, my gas cap is ON and tight as it's suppose to be) __________________ To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

06-12-2007, 09:04 PM	#2
StX221 Elder Join Date: May 2005 Location: Greater Portland, ME Posts: 4,295	no sir, its cause t7 is more picky than a 5 year old that cant pick the damn ice cream flavor at baskin robins. gotta go over all 32 damn flavors 800 times before he can make up his mind. the time you drove with the line unplugged for the boost gauge was probably enough to throw a random misfire code. pull the code and i bet you get a P0300, or a P1300. both are random misfire's. __________________ Time for a comeback tour? To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts. '02 9-5 Aero '05 Yamaha R6

06-12-2007, 09:08 PM	#3
Redfoxx Flirting With TSL Addiction Join Date: Jan 2006 Location: Sioux Falls, SD Posts: 558	pull the code? do you mean the check thing that the SID does everytime you start the car? if that's what you mean, the SID does it's check and says ok, but the check engine light is the only thing saying anything. __________________ To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

06-12-2007, 09:15 PM	#4
Palmer Deez Nutz Site ModeratorElder Join Date: Oct 2005 Location: Cheese Country Posts: 15,679	Go to an Auto Zone, and borrow the OBD reader. It plugs into a port under your steering column. That will "pull the code" and tell you what it is. __________________ S55/LC100/KL

06-12-2007, 09:19 PM	#6
Palmer Deez Nutz Site ModeratorElder Join Date: Oct 2005 Location: Cheese Country Posts: 15,679	I think the reader can do it, but pulling the power is a good excuse to go and do some nice pulls in 3rd and 4th. __________________ S55/LC100/KL

06-12-2007, 09:19 PM	#7
Red DIC Elder Join Date: Dec 2006 Location: Saratoga/Albany Posts: 3,257	I don't answer these questions until codes have been pulled. Autozone and Advanced pull cels for free. __________________ To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

06-13-2007, 05:30 AM	#8
WyldSaabMan Elder Join Date: Nov 2004 Location: Fancy Connecticut Posts: 3,059	yea the line popping off can definetly freak T7 out. Get the code, post it here. Clear the code, and make sure you secure that line to you gauge so it doesnt happen again, and then see what happens. __________________ 99 Saab 9-3se Imola Red 90 Saab 900 SPG Talladega red 88 Saab Powered Jeep Wrangler - 1999 Saab 2.0l T5 04 Yamaha YZF600R 00 Polaris XC700 99 Saab 9-3-RIP 98 900s N/A-RIP

06-13-2007, 05:49 AM	#9
NahumCC Elder Join Date: Aug 2006 Location: Columbus, OH Posts: 9,197	Put a zip tie line on your boost gauge line in the engine bay. You won't have to worry about blowing the line out. Suprised T7 didn't get angry with you over the missing air in the system. __________________ 2013 FR-S To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

06-13-2007, 07:42 PM	#12
SPG-GASM Live, eat, and sleep by TSL Join Date: Jan 2007 Location: Iowa City, IA Posts: 1,240	blowing off the vaccum line is going to throw of the air devaition calculated to the air deviation actual. Thats pretty much saying that the air entering the system is not the correct amount of air that should be there from value reading of the MAF sensor. Yes, this will throw a CEL for a misfire. __________________ To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

06-13-2007, 07:54 PM	#13
StX221 Elder Join Date: May 2005 Location: Greater Portland, ME Posts: 4,295	so, spg-gasm had to put all complex words in, but in simple terms, air in at filter, does not equal air in at the throttle plate.... like for example, the other night i got on the highway and cruised for a few miles (3 or 4) in 4th at like 65, waiting to nail it in 4th and watch the speed gain... when i finally nailed it, i saw a nasty boost spike to 25ish, and then flashing CEL. no misfire codes were stored, but it still thought there was a misfire, just due to the insane difference in pressure. car still runs like a dream though... its all just t7 being picky. i think i remember that it has to read 200 or so "misfires" before the CEL stays lit though, otherwise it will just flash. __________________ Time for a comeback tour? To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts. '02 9-5 Aero '05 Yamaha R6

06-14-2007, 06:04 PM	#14
Redfoxx Flirting With TSL Addiction Join Date: Jan 2006 Location: Sioux Falls, SD Posts: 558	went to Advance Auto today to use their OBD II reader and the code that was reading was P1110, which is 'fuel air metering'. so which i'm guessing is that the fuel/air meter is bad then, which is probably gona need a trip to the dealer...anyone want to loan me an arm and a leg? __________________ To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

06-14-2007, 07:15 PM	#17
WyldSaabMan Elder Join Date: Nov 2004 Location: Fancy Connecticut Posts: 3,059	that could definetly be caused by that line blowing off. Clear the code and see if it come back before spending lots of money. always try the simple shit first __________________ 99 Saab 9-3se Imola Red 90 Saab 900 SPG Talladega red 88 Saab Powered Jeep Wrangler - 1999 Saab 2.0l T5 04 Yamaha YZF600R 00 Polaris XC700 99 Saab 9-3-RIP 98 900s N/A-RIP

06-14-2007, 07:20 PM	#18
Palmer Deez Nutz Site ModeratorElder Join Date: Oct 2005 Location: Cheese Country Posts: 15,679	What about the MAF? __________________ S55/LC100/KL

06-14-2007, 07:27 PM	#19
SPG-GASM Live, eat, and sleep by TSL Join Date: Jan 2007 Location: Iowa City, IA Posts: 1,240	thats what the code is for the MAF. Like what was described up above about the air deviation thing i said its going to cause the fuel trims to adjust to the loss of metered air in the system. __________________ To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

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