Go Back   F150online Forums > Powertrain & Mechanical > V8 Engines
Sign in using an external account
Register Forgot Password?
Register Photos Vin Decoder FAQ Members Search Today's Posts Mark Forums Read Vendor DirectoryGarage

Welcome to F150Online Forums!
Welcome to F150Online.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the F150Online Forums community today!





Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
  #1  
Old 10-04-2004, 07:57 PM
Junior Member
Garage is empty, add now
 
Join Date: Oct 2004
Vehicle: 1994 Ford F150
Posts: 3
94 F150 MAP Sensor location

Need some help here, I have talked with a couple of different for shops about the location of the MAP sensor on my 94 F150. 'Autozone says it is located upper firewall, passenger side. I have looked everywhere, cannot locate the thing. Only thing I see on the passenger side is the AC and heater blower. Anyone know where this thing is located. 2wheel drive 5.0 engine.

thanks
Reply With Quote
  #2  
Old 10-04-2004, 08:46 PM
Senior Member
Garage is empty, add now
 
Join Date: Feb 2003
Location: So. California
Vehicle: 03 Ford f150
Posts: 755
Send a message via AIM to Pestco1
Do you still have the underhood vac routing diag. Might help you to find the vac hose and then you can follow it.
Reply With Quote
  #3  
Old 10-04-2004, 09:16 PM
Senior Member
Garage is empty, add now
 
Join Date: Jan 2003
Vehicle: 2003 Ford F150
Posts: 232
If I remember right, the '94 F150 with the 5.0 litre Engine uses a mass air flow sensor instead of a map sensor for fuel controll.
__________________
'03 F150 XLT Reg. Cab 4x4 Flareside, True Blue/Arizona beige accent,4.6, 4R70W,3.31GR,pwr everything,SRW,Cab Steps,Tow Pkg,Cast Alum. Wheels,Ford snapless tonneau Cover, Bedrug.

"The music is reversable, but time is not----Stand Back----Stand Back" - Fire on High.......ELO
Reply With Quote
  #4  
Old 10-08-2004, 08:28 PM
Junior Member
Garage is empty, add now
 
Join Date: Oct 2004
Vehicle: 1994 Ford F150
Posts: 3
Thumbs up Reply

Thanks everyone for the help. Tailgator, your correct, mine uses the MAF. But it turned out not to be to common knowledge as to this particular year not having one. I had even bought a Haynes manual, they even showed a picture of where it was located on the fire wall. But once you started looking at thier diagrams, the one for my VIN# did not show a MAP sensor. So now I have to diag other things. Having problems after about 60 miles of driving the Check Engine light comes on, and power disappears. The light cycles on and off. But the power fluctuations are not in sync with the light going off an on. If i'm idling and the power comes back, drops the tranny into first gear and takes off, fraid of dropping the trans like that. On the highway, I will loose anywhere from 5 to 10 miles an hour until it cycles backs on again. any ideas?

Gene
Reply With Quote
  #5  
Old 11-05-2004, 06:29 PM
Junior Member
Garage is empty, add now
 
Join Date: Nov 2004
Location: Michigan
Vehicle: 1994 Ford F150
Posts: 5
A

My truck has the same problem as Gene described, except mine does it after 15-20 minutes instead of after 60 miles. It drives fine until the check engine light comes on, then I lose power. The light will be off and on periodicaly and is usually off when I stop but has a hard time getting back up to speed and jerks when shifting. It also doesn't idle right in P&{N} it revs up then suddenly drops and sometimes kills and if it doesn't kill it keeps going up and down, but idles fine in any drive. I just replaced TPS but didn't help.
My truck is a 94 F-150 5.0 AT 4x4 with almost 170,000 miles
Any ideas would be a great help.
__________________
Stephen
stevmatt@iserv.net
Reply With Quote
  #6  
Old 11-06-2004, 01:08 PM
Senior Member
Garage is empty, add now
 
Join Date: Nov 1998
Location: Windsor, ON, Canada
Vehicle: 1994 Ford F150
Posts: 729
Cool

Guys, check you Oxygen Sensors. Had a similar problem where I would be driving and the truck would feel as if it was flooding itself (bog) and then about a minute later, it would pickup and just take off quickly. Ended up the codes was saying too lean and too rich, changed the sensor and never had a problem again.

Have Fun & Keep on Truckin'
Dean
__________________
1994 F-150 XLT Supercab, Long Box, 306 EFI, 3.55 LS, Superchip, K&N FIPK, Automatic, Royal Blue in and out, Captain Chairs. Lightly Tinted, Soft Tonneau Cover. And a few goodies ...
Reply With Quote
  #7  
Old 11-08-2004, 03:25 PM
Junior Member
Garage is empty, add now
 
Join Date: Nov 2004
Location: Michigan
Vehicle: 1994 Ford F150
Posts: 5
Oxygen Sensor

Thanks for your input Dean, I changed oxygen sensor and that seemed to fix most off my problem. What a Load of my mind, I thought for sure I had an expensive repair coming up but thanks to you it only was only $43.
I still have problem with idle in park and nuetral, I tried it with transfer case in nuetral and transmision in drive and it still had problem. So it only has problem when there is no load on engine.

Thanks again Dean, and nice truck that color is awsome!
__________________
Stephen
stevmatt@iserv.net

Last edited by Steve94Truck; 11-08-2004 at 03:27 PM.
Reply With Quote
  #8  
Old 11-09-2004, 09:20 AM
Senior Member
Garage is empty, add now
 
Join Date: Nov 1998
Location: Windsor, ON, Canada
Vehicle: 1994 Ford F150
Posts: 729
Cool

Steve, no problem. I am glad to help and thanks for the comments on the truck.

When you put the Oxygen sensor in the truck did you reset the computer ?? Another thing is check you IAC (Idle Air Control), it is on the side of the throttle body. Take it off and give it a good cleaning or if you wish change it out but I would try cleaning first, always the cheaper way if it doesn't solve your problem.

Have Fun & Keep on Truckin'
Dean
__________________
1994 F-150 XLT Supercab, Long Box, 306 EFI, 3.55 LS, Superchip, K&N FIPK, Automatic, Royal Blue in and out, Captain Chairs. Lightly Tinted, Soft Tonneau Cover. And a few goodies ...
Reply With Quote
  #9  
Old 11-09-2004, 07:13 PM
Junior Member
Garage is empty, add now
 
Join Date: Nov 2004
Location: Michigan
Vehicle: 1994 Ford F150
Posts: 5
Question IAC

Yes I Reset the computer by unplugging battery and turned headlights on for more than ten minutes then plugged it back in.
I have also cleaned the IAC and I may try switching this with my brothers Sable that apears to have the same one, but have been told it would have problem in drive idle too.
__________________
Stephen
stevmatt@iserv.net
Reply With Quote
Old 11-09-2004, 07:13 PM


 
 
 
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


All times are GMT -4. The time now is 07:39 AM.


 
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company
Contact Us Advertising Privacy Statement Terms of Service Jobs Forum Text Archives
Emails & Contact Details

Search Engine Friendly URLs by vBSEO 3.5.2