Weird Check Engine Light Now

Reply Subscribe

Thread Tools

Search this Thread

Jan 24, 2022 | 02:48 PM

Prinnypoogirl1

Thread Starter

New User

Joined: Jan 2022

Posts: 7

Likes: 0

Weird Check Engine Light Now

Recently had the truck in my shop for two weeks, 95 250 stockish. Replaced ipr, icp, oil cooler (tube, both housings, & rings), injector o'rings all around, changed oil & coolant, new 6637air filter, spyder intake o'ring, installed riff raffs oil cross over, installed new fuel bowl, & new riff raff return fuel lines.. Truck runs great again but now i am getting a check engine light. Does NOT come on right away, probably 30 secs after running, stays on while driving, BUT, will go off if at a stop light for a period of time, then back on while driving. ZERO noticeable difference in the way the truck runs or acts with the cell on. Both sensors are Ford-Motocraft as well as all o'rings and gaskets, noting skimped here. I know right off while researching other threads you are going to say get it scanned but i do not have quick access to that right now, therefore I simply thought i would ask if anyone has had similar symptoms before able to get scanned. Thanks in advance. Light was NOT present before performing all work.

Jan 24, 2022 | 04:16 PM

farmert

Lead Driver

Joined: Mar 2006

Posts: 5,111

Likes: 1,549

From: western SD

Without the code, you will be like a dog chasing it's tail. It could be this, or it could be that, but the code will tell you what it is that is setting the light.

Jan 24, 2022 | 06:51 PM

Edgethis

Lead Driver

Joined: May 2009

Posts: 6,815

Likes: 708

From: Tobyhanma, PA

Intermittent lights are harder to track down, but definitely try and read a code if you can

Jan 24, 2022 | 10:25 PM

96 OBS

Laughing Gas

Joined: Oct 2019

Posts: 949

Likes: 109

From: Fowler Colorado

I get the struggle I tried it your way too. The $350 for my auto enginuity was worth it to be able to communicate with my truck. You can get forscan pretty cheap from what I understand

Jan 27, 2022 | 12:21 PM

BWST

Got Data?

Joined: Dec 2012

Posts: 4,270

Likes: 1,406

From: Lake Stevens, WA

@Prinnypoogirl1 FORScan and an OBDII dongle are very cheap and effective for code reading, live engine parameter monitoring, and self tests. How-to thread below to get you going.

https://www.ford-trucks.com/forums/1...d-q-and-a.html

Jan 27, 2022 | 08:57 PM

Prinnypoogirl1

Thread Starter

New User

Joined: Jan 2022

Posts: 7

Likes: 0

read codes tonight, first time in the 15 years of owning truck. downloaded forscan and received the adapter in the mail today. codes are as follows:
p0113- IAT Sensor
p0603- circuit interruption
p0237- turbo boost sensor

I went ahead and cleared them but have not ran the truck yet to see which ones come back, if any, will have to wait until tomorrow.

First and third have me scratching my head. Going to start my research now on these but if anyone can chime-in in the meantime that would be great.

Jan 28, 2022 | 09:28 AM

BWST

Got Data?

Joined: Dec 2012

Posts: 4,270

Likes: 1,406

From: Lake Stevens, WA

P0237 - MAP - Turbo boost sensor A circuit low input - Circuit open, short to ground, MAP sensor

You could check the MAP PID with FORScan and see what it reads. Check the MAP sensor wiring for shorts, opens.

Recommend starting up FORScan and taking the rig for a drive, logging all the PIDs in the how-to thread, including MAP, catching the CEL coming on. Post the CSV here and I will graph it for you. This can be helpful to see intermittent glitches.