Car wont stay running for more than a second - P0102 & P0198 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

STS-V · 06-22-2014, 04:00 PM

Hi all,

Trying to get my car running. Everything is in, when I turn it over it fires for a split second then dies. I am getting P0102 (Mass or Air Flow Circuit, low input) and P0198 (Engine oil temperature sensor high).

I bought a new mass air flow sensor, and am going through the wiring now. Any other suggestions?

jflogerzi · 06-22-2014, 04:25 PM

What mods are done to the car? is your MAF sensor plugged in?

stugray · 06-22-2014, 04:29 PM

Quote:

Originally Posted by STS-V

Hi all,

Trying to get my car running. Everything is in, when I turn it over it fires for a split second then dies. I am getting P0102 (Mass or Air Flow Circuit, low input) and P0198 (Engine oil temperature sensor high).

I bought a new mass air flow sensor, and am going through the wiring now. Any other suggestions?

This might sound stupid but I have done it:

Did you hook the intake back up from the MAF to the throttle body?

White64Goat · 06-22-2014, 06:03 PM

Still under warranty? If yes, dealer let repair it.

stugray · 06-22-2014, 06:46 PM

Quote:

Originally Posted by STS-V

I bought a new mass air flow sensor, and am going through the wiring now. Any other suggestions?

Ok, here is the $10k question:

WHY did you need to replace the MAF????
(my bet is this will be good....)

gramicci101 · 06-22-2014, 06:48 PM

STS-V bought a totaled FR-S and is repairing/rebuilding it. It wouldn't surprise me if the MAF sensor was damaged in the accident.

steve99 · 06-22-2014, 07:13 PM

Quote:

Originally Posted by STS-V

Hi all,

Trying to get my car running. Everything is in, when I turn it over it fires for a split second then dies. I am getting P0102 (Mass or Air Flow Circuit, low input) and P0198 (Engine oil temperature sensor high).

I bought a new mass air flow sensor, and am going through the wiring now. Any other suggestions?

Consentrate on the maf sensor and wiring or connectors. Engine wont run without maf sensor.

Another guy on here had exact same symptoms after mouse ate through his air filter and some crap got lodged in maf sensor and car would just fire then stall

STS-V · 06-22-2014, 08:30 PM

Quote:

Originally Posted by jflogerzi

What mods are done to the car? is your MAF sensor plugged in?

Maf Sensor is plugged in... I even ran new wires from the harness. Still nothing.

Quote:

Originally Posted by stugray

This might sound stupid but I have done it:

Did you hook the intake back up from the MAF to the throttle body?

All of it is in, except the sound tube. Then again, it ran after wrecked with half the intake missing.

Quote:

Originally Posted by White64Goat

Still under warranty? If yes, dealer let repair it.

Nope. Not by a long shot.

Quote:

Originally Posted by stugray

Ok, here is the $10k question:

WHY did you need to replace the MAF????
(my bet is this will be good....)

Quote:

Originally Posted by gramicci101

STS-V bought a totaled FR-S and is repairing/rebuilding it. It wouldn't surprise me if the MAF sensor was damaged in the accident.

The original map sensor was cracked, but it still ran like that. I bought a new one, hoping this would solve the issue.

Quote:

Originally Posted by steve99

Consentrate on the maf sensor and wiring or connectors. Engine wont run without maf sensor.

Another guy on here had exact same symptoms after mouse ate through his air filter and some crap got lodged in maf sensor and car would just fire then stall

Ok. I think I will continue on this. Thanks for everyones helpful answers.

stugray · 06-22-2014, 08:38 PM

SO has the car run since the accident?

See I expected more to this story :-)

STS-V · 06-22-2014, 11:01 PM

Quote:

Originally Posted by stugray

SO has the car run since the accident?

See I expected more to this story :-)

http://www.ft86club.com/forums/showthread.php?t=60238

The issue is that it ran fine before we put the new underhood harness and front clip on.

mike the snake · 06-22-2014, 11:29 PM

You sure you have fuel pressure/fuel pump working?

Poodles · 06-23-2014, 01:13 AM

I wonder if the P0198 code would cause the engine to shut down? I know many cars will shut down if they detect low oil pressure to protect the engine.

STS-V · 06-23-2014, 08:31 AM

Quote:

Originally Posted by mike the snake

You sure you have fuel pressure/fuel pump working?

I can hear the fuel pump kick on during ignition for a second or two. And it does fire and run for a second before it just dies. I will double check.

Quote:

Originally Posted by Poodles

I wonder if the P0198 code would cause the engine to shut down? I know many cars will shut down if they detect low oil pressure to protect the engine.

I dont think so. I had this sensor completely disconnected when I was lot running and driving it at the body shop.

STS-V · 06-23-2014, 02:37 PM

Got it. She lives part 2 SHE RUNS.

Thats actually a video. click it.

It ended up being a bad ground. I had a ground attached to trans and not the body, who would have thought.

06-22-2014, 04:00 PM	#1
STS-V Banned Join Date: Feb 2014 Drives: 2013 FR-S Location: Cleveland Posts: 591 Thanks: 126 Thanked 130 Times in 80 Posts Mentioned: 12 Post(s) Tagged: 0 Thread(s)	Car wont stay running for more than a second - P0102 & P0198 Hi all, Trying to get my car running. Everything is in, when I turn it over it fires for a split second then dies. I am getting P0102 (Mass or Air Flow Circuit, low input) and P0198 (Engine oil temperature sensor high). I bought a new mass air flow sensor, and am going through the wiring now. Any other suggestions?

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06-22-2014, 06:03 PM	#4
White64Goat Senior Member Join Date: Jun 2012 Drives: 13 BRZ CBS LTD MT, 02 WRX Location: Fred. Co. Md. Posts: 2,351 Thanks: 65 Thanked 1,113 Times in 628 Posts Mentioned: 19 Post(s) Tagged: 1 Thread(s)	Still under warranty? If yes, dealer let repair it.

06-22-2014, 06:48 PM	#6
gramicci101 Off Topic Join Date: Feb 2014 Drives: 2014 Subaru BRZ Limited Location: Vegas, baby! Posts: 4,610 Thanks: 2,369 Thanked 4,243 Times in 2,170 Posts Mentioned: 43 Post(s) Tagged: 3 Thread(s)	STS-V bought a totaled FR-S and is repairing/rebuilding it. It wouldn't surprise me if the MAF sensor was damaged in the accident.

06-22-2014, 08:38 PM	#9
stugray Banned Join Date: Sep 2013 Drives: 2013 GBS BRZ Limited Location: Colorado Posts: 1,925 Thanks: 627 Thanked 1,445 Times in 711 Posts Mentioned: 41 Post(s) Tagged: 0 Thread(s)	SO has the car run since the accident? See I expected more to this story :-)

06-22-2014, 11:29 PM	#11
mike the snake Senior Member Join Date: Jul 2013 Drives: 2013 BRZ Location: Norcal Posts: 1,592 Thanks: 1 Thanked 623 Times in 378 Posts Mentioned: 15 Post(s) Tagged: 0 Thread(s)	You sure you have fuel pressure/fuel pump working?

06-23-2014, 01:13 AM	#12
Poodles Senior Member Join Date: Oct 2013 Drives: 2015 Series.Blue Location: Fort Worth, TX Posts: 1,781 Thanks: 88 Thanked 781 Times in 481 Posts Mentioned: 16 Post(s) Tagged: 0 Thread(s)	I wonder if the P0198 code would cause the engine to shut down? I know many cars will shut down if they detect low oil pressure to protect the engine.

06-23-2014, 02:37 PM	#14
STS-V Banned Join Date: Feb 2014 Drives: 2013 FR-S Location: Cleveland Posts: 591 Thanks: 126 Thanked 130 Times in 80 Posts Mentioned: 12 Post(s) Tagged: 0 Thread(s)	Got it. She lives part 2 SHE RUNS. Thats actually a video. click it. It ended up being a bad ground. I had a ground attached to trans and not the body, who would have thought.

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