1995 F250 Engine Code Help!
Thread Starter
|
New User
Joined: Apr 2008
Posts: 14
Likes: 0
1995 F250 Engine Code Help!
I am interested in buying a 1995 f-250 powerstroke 7.3. Truck is in decent shape and runs good. The transmission was rebuilt by amco and has a three year warranty. The transmission shifts a little hard especially from 1-2 shift. I used my edge programmer to run a diagnostic check and i get a code P0107- BARO/MAP SENSOR- Low voltage detected! The gentleman that is selling the truck said that the sensor is out and makes the transmission shift hard. Is is this true or do you think there is transmission problems? What does the MAP sensor do? Please help me so i can make a decision to buy this truck.
Thankyou
Luke
Thankyou
Luke
Senior User
Joined: Apr 2010
Posts: 262
Likes: 0
the MAP (Manifold Air Pressure) sensor measures the pressure in your intake manifold. It reads the same thing your boost gauge does, if you have one. I know that MAP is tied into how the transmission selects it's shift point at a given throttle position, but don't know why it would make the trans shift harder... very possible though in my head, and cleatus says it does too, so. I would go with, yeah it could be, I can't imagine a MAP sensor costing too much... Might buy one or tell the guy to replace it to be sure, because as im sure you know, you don't want to have to get into these E4OD's... they're spensive
Postmaster
Joined: Sep 2007
Posts: 4,195
Likes: 6
From: Medford Oregon
P0107 = Baro sensor signal voltage was less than .04 volts for more than .2 seconds. WAG sensor is either defective or unplugged. Map sensors are very expensive so don't buy one for this code.
Don't know about the shifting issue. I've unplugged my MAP sensor before and it shifts just fine. Never tried unplugging the BARO sensor though.
Don't know about the shifting issue. I've unplugged my MAP sensor before and it shifts just fine. Never tried unplugging the BARO sensor though.
Postmaster
Joined: Sep 2007
Posts: 4,195
Likes: 6
From: Medford Oregon
The BARO signal if used to determine altitude to adjust timing and fuel quantity to optimize engine operation and control smoke throughout all altitude conditions.
If the BARO signal is detected out of range by the PCM it will cause the PCM to ignore the BARO and use the MAP signal at low idle as an indication of barometric pressure.
I've never heard of a bad BARO sensor ... always a first time though.
If the BARO signal is detected out of range by the PCM it will cause the PCM to ignore the BARO and use the MAP signal at low idle as an indication of barometric pressure.
I've never heard of a bad BARO sensor ... always a first time though.
Senior User
Joined: Apr 2010
Posts: 262
Likes: 0
really? a MAP sensor costs alot? who am I kidding, it's a FORD part, of course it does... I have no idea where the BARO sensor is, but my best educated guess is it's a barometer to measure atmospheric pressure so that the computer can adjust it's fuel program according to altitude change. Have the owner replace it, clear the codes and drive the truck fresh, or price the sensor and take like double off the offering purchase price... take a good look at the rest of the truck though, because if he won't take care of a sensor, then there are some other things probably been neglected... jsut my $.02
Trending Topics
Thread Starter
|
New User
Joined: Apr 2008
Posts: 14
Likes: 0
Is it normal for the transmission to shift hard from 1-2? It feels like if maybe they put a shift kit in it? The rest of the gears are smooth with no slipping. Transmission was rebuilt by amco and is still under warranty. According to cletus he said that code with make it shift hard but what do i need to do to correct the code? Its a 95 f250 supercab 4x4 151000 miles. Hes asking 4,000 truck is in overall decent shape for being 15 yeras old. I just dont want to buy something that is going to be problems i need to make a good decision.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!
Joe Kucinski
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!
Michael S. Palmer
The Best F-150 Deal of Every Trim Level (XL through Raptor)
Joe Kucinski
Senior User
Joined: Apr 2010
Posts: 262
Likes: 0
well, you can clear the code with any scanner and see if it will stay off for a drive cycle to test drive the truck without the code throwing the tranny into safe mode...
And no, it's not normal for a hard shift, these tranny's are actually notorious for disgustingly loose slippy shifts. More like a car trans than what you would expect from a truck trans really... And like I said, take a good look around the truck for leaks, split seals, ball joints, tie rod ends (splits, looseness), drive it and see if there are any wierd noises, drive it around enough to warm the motor up and let it sit idling and check for running leaks, check the valley of the motor for fuel puddling (lifter pump seal fail), i'd check the oil, trans fluid and fuel bowl for fluid color to get an idea of if it's maintained and check the filter in the fuel bowl, check coolant color, power steering fluid color, and the pump for leaks... stuff like that. There are a few weak points with the peripherals on these trucks, but you won't find a more bulletproof motor around. And devilishly good looks as we might all agree upon
And no, it's not normal for a hard shift, these tranny's are actually notorious for disgustingly loose slippy shifts. More like a car trans than what you would expect from a truck trans really... And like I said, take a good look around the truck for leaks, split seals, ball joints, tie rod ends (splits, looseness), drive it and see if there are any wierd noises, drive it around enough to warm the motor up and let it sit idling and check for running leaks, check the valley of the motor for fuel puddling (lifter pump seal fail), i'd check the oil, trans fluid and fuel bowl for fluid color to get an idea of if it's maintained and check the filter in the fuel bowl, check coolant color, power steering fluid color, and the pump for leaks... stuff like that. There are a few weak points with the peripherals on these trucks, but you won't find a more bulletproof motor around. And devilishly good looks as we might all agree upon
Thread Starter
|
New User
Joined: Apr 2008
Posts: 14
Likes: 0
Ive been reading about the E4OD and i read that sometimes the 1-2 hard shift is cause by the 1-2 accumulator! Could that be the problem? The owner agreed to take back to aamco since it is still under warranty.
Thread Starter
|
New User
Joined: Apr 2008
Posts: 14
Likes: 0
so i spoke to the owner of the truck. he is going to take the truck to the transmission shop! but he keeps telling me that the transmission shop and a diagnositc check from a mechanic both said that the faulty sensor causes the hard 1-2 shift. has anyone had this problem or heard of this????
Thread
Thread Starter
Forum
Replies
Last Post
aclaybor
1987 - 1996 F150 & Larger F-Series Trucks
10
Feb 3, 2017 01:32 PM
coreyw2
1994.5 - 1997 7.3L Power Stroke Diesel
2
Dec 5, 2015 04:52 AM
