Ford Explorer wont start, throws code P0376
Thread Starter
|
New User
Joined: Aug 2010
Posts: 7
Likes: 0
Ford Explorer wont start, throws code P0376
Ok so I have a 97 explorer (4.0L SOHC) that wont start. I just replaced one of the timing chain tensioners, put it back together and it throws the following error:
P0376 Timing Reference High Resolution Signal "B" Too many pulses. How do I fix this?
Also this thing has been sitting for about 4 years.
P0376 Timing Reference High Resolution Signal "B" Too many pulses. How do I fix this?
Also this thing has been sitting for about 4 years.
Logistics Pro
Joined: Jun 2009
Posts: 4,818
Likes: 83
From: Cedar Rapids, IA
Are you absolutely certain that is the correct code number that you are getting? The factory service manual doesn't list it and it's not a very common code from a Global OBD-II standpoint.
If you are positive this is the code you're getting, I'd suspect it's related to either the Crankshaft Position Sensor (CKP) or Camshaft Position Sensors (CMP).
-Rod
If you are positive this is the code you're getting, I'd suspect it's related to either the Crankshaft Position Sensor (CKP) or Camshaft Position Sensors (CMP).
-Rod
Thread Starter
|
New User
Joined: Aug 2010
Posts: 7
Likes: 0
Actually I figured out it is not throwing any codes. The code reader i am using is on this ancient laptop running windows 95... and it was running under simulation mode so the codes it gave me weren't actually from the vehicle. I figured this out by running it, looking at the codes it gave, and then noticing that the plug that goes to the car wasn't even plugged in... haha
Now i just have the problem that the motor turns over but it wont start. I checked the fuel pressure and it seems like i'm not getting any... so tomorrow I have to check the fuel filter, fuel lines, fuel pressure regulator, and fuel pump... Thanks for the response though. Will post again if I cant seem to figure it out
Now i just have the problem that the motor turns over but it wont start. I checked the fuel pressure and it seems like i'm not getting any... so tomorrow I have to check the fuel filter, fuel lines, fuel pressure regulator, and fuel pump... Thanks for the response though. Will post again if I cant seem to figure it out
Logistics Pro
Joined: Jun 2009
Posts: 4,818
Likes: 83
From: Cedar Rapids, IA
You'll also want to make sure the inertial fuel pump shut off switch is not tripped. If you confirm it's not tripped check for voltage in and out of the switch before swapping out fuel pumps, assuming your fuel filter is not clogged.
-Rod
-Rod
Senior User
Joined: May 2009
Posts: 238
Likes: 1
From: Horseheads NY
Listen for the fuel pump and see if its even turning on when you turn the key on. It will only run for one or two seconds. Make sure that its running for those two seconds and not just a quick pulse. Maybe your factory anti-theft has been triggerd. Does that have the chip in the key?
Thread Starter
|
New User
Joined: Aug 2010
Posts: 7
Likes: 0
I dont think my key has a chip.
So yesterday I disconnected the fuel line right before the fuel filter and when cranking the motor gas was not coming out of the fuel line. So i suspect the fuel pump is bad. I measured the voltage at the inertia switch and it reads about 12V for a second right when you turn the key and then drops down to 6.5V. When you are cranking the voltage goes up to around 10.5V. Does this sound right?
Today I am dropping the tank to get to the fuel pump and wire leads on the tank to measure those voltages and possibly replace the pump.
So yesterday I disconnected the fuel line right before the fuel filter and when cranking the motor gas was not coming out of the fuel line. So i suspect the fuel pump is bad. I measured the voltage at the inertia switch and it reads about 12V for a second right when you turn the key and then drops down to 6.5V. When you are cranking the voltage goes up to around 10.5V. Does this sound right?
Today I am dropping the tank to get to the fuel pump and wire leads on the tank to measure those voltages and possibly replace the pump.
Trending Topics
Senior User
Joined: May 2009
Posts: 238
Likes: 1
From: Horseheads NY
Before you take the tank down. Have someone try starting it and at the same time, take a hammer and bang on the underside of the gas tank, at about the middle of it, thats where the pump should be. Sometimes if the pump is locked up, this will free it up and the vehicle will start. If it does, then you have a bad pump. If it doesn't, well It still could be a bad pump...lol.. But at least you will know for sure if it starts up.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Logistics Pro
Joined: Jun 2009
Posts: 4,818
Likes: 83
From: Cedar Rapids, IA
If the pump is open circuit when you did the test, you should not see any voltage drop. With the voltage dropping like that, it sound like either the pump is stalled like V8Ranger302 suggests or there is corrosion or a bad connection in the circuit (possibly a corroded fuel pump relay).
-Rod
-Rod
Thread Starter
|
New User
Joined: Aug 2010
Posts: 7
Likes: 0
So I pulled the tank and tested the fuel pump yesterday. It was bad. It made a very very quiet humming noise. Went to Orielly's today and picked up a new fuel pump, strainer, and fuel filter. Installed them today and now my explorer runs!!!
It just runs like poop now though. It idles pretty rough and when you give it gas when youre driving there is no power whatsoever. It backfires a lot too.
Code reader gives a P0174 (System too lean bank 2) error code. Any ideas of how to fix it now?
It just runs like poop now though. It idles pretty rough and when you give it gas when youre driving there is no power whatsoever. It backfires a lot too.
Code reader gives a P0174 (System too lean bank 2) error code. Any ideas of how to fix it now?
Senior User
Joined: May 2009
Posts: 238
Likes: 1
From: Horseheads NY
This is what that code means.
A code P0174 may mean that one or more of the following has happened:
A code P0174 may mean that one or more of the following has happened:
- [*]
Logistics Pro
Joined: Jun 2009
Posts: 4,818
Likes: 83
From: Cedar Rapids, IA
Since the code only suggests one bank is lean, I'd focus a bit less on items that would feed both banks and more towards the bank on the driver's side (bank 2). Have you ever had the intake manifold gaskets replaced? I don't recall which bank the PCV elbow is related to, but that might be another item to search this forum for.
-Rod
-Rod
Thread
Thread Starter
Forum
Replies
Last Post
Glaser67
Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W)
64
Jan 13, 2017 10:39 PM
Eaglestroker
1999 - 2003 7.3L Power Stroke Diesel
25
Sep 8, 2015 11:24 AM
justforkicks
1987 - 1996 F150 & Larger F-Series Trucks
1
Oct 22, 2011 07:39 PM
