Frikking 3.7 - Page 3 - Jeep Garage - Jeep Forum

Go Back   Jeep Garage - Jeep Forum > Jeep Technical Discussion > Troubleshooting/Problems Discussion

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #25  
Old 11-02-2015, 01:51 AM
coaldigger's Avatar
Member
 
Join Date: Oct 2015
Posts: 110
Thanks: 24
Thanked 13 Times in 13 Posts
Rep Power: 531
coaldigger is on a distinguished road
Re: Frikking 3.7

Torque downloaded and dongle ordered. Will the app test map and iat?

Reply With Quote
Sponsored Links
Advertisement
 
  #26  
Old 11-02-2015, 02:56 PM
Frango100's Avatar
The beast from Brazil

My Jeep: 2004 4.7L WJ
 
Join Date: Dec 2009
Location: Brazil
Posts: 7,267
Thanks: 17
Thanked 366 Times in 353 Posts
Rep Power: 529382
Frango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond repute
Re: Frikking 3.7

It will not test the MAP nor IAT, but will show the live data from the sensors. The MAP should show actual barometric pressure with engine off and will show a much lower value with engine running. The IAT should show outside temperature when the engine is cold.
For the O2 sensors, you will have to look at the upstream sensors, ie the 1-1 (bank 1, sensor 1) and 2-1 (bank 2, sensor 1). The voltage should jump up and down between 0.2-0.8V and the STFT (short term fuel trim) should read a single digit value (mostly +- 5). This is on a steady running engine, not during acceleration. If the STFT becomes double digit values ( so +-10 or more), it is a sign that something is not regulating well. Can be for example due to a faulty O2 sensor, low fuel pressure, vacuum leak or other problems.
__________________
Frank

JEEP Grand Cherokee 4.7 Lmtd 2004
HID 8000K in low and fog / Quad Squad member
KYB Gas-a-Just shocks / Pirelli Scorpion ATR 245/65/17 - Transgo reprogramming shiftkit.

VW Beetle 2.0 TSI 2013
My new toy
Reply With Quote
  #27  
Old 11-03-2015, 03:09 AM
coaldigger's Avatar
Member
 
Join Date: Oct 2015
Posts: 110
Thanks: 24
Thanked 13 Times in 13 Posts
Rep Power: 531
coaldigger is on a distinguished road
Re: Frikking 3.7

So the iat is in the intake tube from airbox and the map is? I've been told and read that the 05 3.7 does not have a map sensor. Is this true?
Reply With Quote
  #28  
Old 11-03-2015, 06:12 AM
Frango100's Avatar
The beast from Brazil

My Jeep: 2004 4.7L WJ
 
Join Date: Dec 2009
Location: Brazil
Posts: 7,267
Thanks: 17
Thanked 366 Times in 353 Posts
Rep Power: 529382
Frango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond repute
Re: Frikking 3.7

Donīt know who told you that, but it should have a MAP sensor. Its mounted with two bolts to the forward side of the intake manifold.
__________________
Frank

JEEP Grand Cherokee 4.7 Lmtd 2004
HID 8000K in low and fog / Quad Squad member
KYB Gas-a-Just shocks / Pirelli Scorpion ATR 245/65/17 - Transgo reprogramming shiftkit.

VW Beetle 2.0 TSI 2013
My new toy
Reply With Quote
  #29  
Old 11-03-2015, 06:18 AM
coaldigger's Avatar
Member
 
Join Date: Oct 2015
Posts: 110
Thanks: 24
Thanked 13 Times in 13 Posts
Rep Power: 531
coaldigger is on a distinguished road
Re: Frikking 3.7

Yea...sorry about that. I was thinking about the egr.
Reply With Quote
  #30  
Old 11-16-2015, 09:15 PM
champagneinhand's Avatar
Member
My Jeep: 2016 3.2L KL
 
Join Date: Dec 2013
Location: Upstate Western NY State
Posts: 233
Thanks: 29
Thanked 18 Times in 17 Posts
Rep Power: 1332
champagneinhand is on a distinguished road
Garage
Re: Frikking 3.7

If all else fails you might consider seeing if the valves are in speck or need adjustment. I didn't see how many miles on the '05. I bought my daughter a 2005 CRV and I replaced every fluid, plugs, belts , starter and it's finally running well but the valves are a little noisy. When I pulled these plugs at just under 142K miles just plug 4 slowed signs of having a rich fuel blend or a need to adjust the exist valves. That will have to wait until spring when I can get better access removing the head cover and replace the gasket. We are just about to go into the heavy Winter season in a Lakeshore snow belt. You try you best but salty, snowy I've filled Winters are hard on any vehicle and the CR-Vs are known for being quite durable. I can't see how she went so long on the same coolant, tranny and Rear diff fluids. The brake fluid and power steering were both almost black. One turkey baster and changed those fluids. I did brakes/rotors and tired as well. Luckily we got it for $1500 and know the previous owner. With some minor passenger body work and all the maintenance we are in just over $4500. Hopefully it will run for another 4-6 years. Jeeps are maintenance excessive but we know this going into things.

Best of luck there.
Reply With Quote
Reply

Thread Tools
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 Off
Refbacks are Off


Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 08:59 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community

JeepGarage.org is in no way associated with or endorsed by FCA US LLC. Chrysler, Dodge, Jeep, Ram, Mopar and SRT are registered trademarks of FCA US LLC.