318ti.org forum

Go Back   318ti.org forum > Technical, Maintenance and Modifications > Engine

Notices

Engine Tuneups, chips, wires, spark plugs.

.
» Recent Threads
SALVAGE ALERT!
10-21-2014 05:34 AM
Last post by Sito
Yesterday 10:34 PM
11 Replies, 376 Views
PA: Project car or...
07-09-2014 04:36 AM
Last post by hotmilk400
Yesterday 09:00 PM
35 Replies, 3,528 Views
For Sale 1995 318TI One...
Yesterday 08:45 PM
Last post by fun2drive
Yesterday 08:45 PM
0 Replies, 49 Views
Bought 3.15 LSD but ...
10-18-2014 08:02 PM
Last post by stevenwrichards
Yesterday 07:16 PM
2 Replies, 275 Views
1997 318ti + DASC to sell
10-20-2014 08:48 PM
Last post by M-technik-3
Yesterday 07:10 PM
3 Replies, 305 Views
FS: 16x7 Style 42 -...
05-04-2014 02:56 AM
Last post by M-technik-3
Yesterday 06:38 PM
20 Replies, 1,706 Views
Engine swap Exhaust...
10-19-2014 11:39 PM
Last post by M-technik-3
Yesterday 06:28 PM
4 Replies, 359 Views
1997 318ti 5 speed...
Yesterday 05:16 PM
Last post by swellconvivialguy
Yesterday 05:16 PM
0 Replies, 91 Views
1998 318ti...
08-30-2014 08:49 AM
Last post by bazar01
Yesterday 05:16 PM
21 Replies, 1,066 Views
Midnight Tuning...
02-08-2012 05:38 PM
Last post by Shadowhunter
Yesterday 05:27 AM
97 Replies, 15,513 Views
Reply Share/Bookmark
 
Thread Tools Display Modes
Old 04-10-2012, 10:04 PM   #1
ryszardsh
Member
 
Join Date: Oct 2009
Location: Louisiana
Posts: 54
iTrader: (0)
Default Instruments lead to questions

I have gotten myself a bluetooth OBD monitor that plugs into the port by the driver's left knee. Really shows a bunch of things I never knew and I am still poking around with the software (Torque on an Android tablet) Short term fuel trim data is quite interesting.

One question already - my cooling water temp runs 98 -101 C at all times,on the low end of that range when the A/C is on, on the 100-101 end once warmed up and A/C off. Is that correct, the proper range? Seems I recall the thermostat being a much lower number but cannot lay hands on spec just now. My thermostat is practically brand new, replaced last fall when I did the radiator and hoses so I doubt that is problem. Clearly temp drops when fan kicks in on high with A/C so maybe running right at 100 all the time is correct?

RAS
ryszardsh is offline   Reply With Quote
Old 04-10-2012, 11:44 PM   #2
zoner
Senior Member
 
zoner's Avatar
 
Join Date: Oct 2008
Location: Los Angeles, CA
Posts: 1,384
iTrader: (7)
Default

Assuming your car is an OBD-II M44, the stock thermostat spec. is 95*C. There are, however, any number of things that could cause it to run hotter, including: air in the system, deteriorated water pump impeller, clogged radiator, clogged water jackets in the head/block, etc. If the temp. is noticeably fluxuating when the A/C kicks on and off, something isn't quite right. Does the temp needle noticeably move as well, or is it just on your OBD monitor?
zoner is offline   Reply With Quote
Old 04-10-2012, 11:49 PM   #3
familytruckster
Senior Member
 
Join Date: Jul 2009
Location: MD/PA/DC
Posts: 1,629
Vehicles
iTrader: (3)
Default

Normal operating temperature is 12*F over the temperature of the thermostat IIRC.

These things are designed to run hot.
__________________
No more ti.
familytruckster is offline   Reply With Quote
Old 04-11-2012, 01:04 AM   #4
ryszardsh
Member
 
Join Date: Oct 2009
Location: Louisiana
Posts: 54
iTrader: (0)
Default instruments and temps

This is a 98 M44 OBD II. I do not see any real temp needle movement when the a/c kicks on, a very slight (1/4 needle width?) downward shift. I doubt I have a clogged radiator, as it is practically new, and if it is supposed to run at 12F above thermostat then I am almost dead on that at highest reading, just a little lower (12 f above 95 C is ~ 102C)

Maybe 98-101 is just dead normal. Is there some reference for 12F above the thermostat spec?

RAS

Last edited by ryszardsh; 04-11-2012 at 01:05 AM. Reason: typo
ryszardsh is offline   Reply With Quote
Old 04-11-2012, 01:19 AM   #5
1996 328ti
Senior Member
 
1996 328ti's Avatar
 
Join Date: Jun 2003
Location: Greenville, SC
Posts: 8,967
Vehicles
iTrader: (1)
Default

Quote:
Originally Posted by ryszardsh View Post
I do not see any real temp needle movement when the a/c kicks on, a very slight (1/4 needle width?) downward shift.
You won't. Since the E36, water temp gauges are useless.
I can be on the track at WOT in 95 degree weather and the needle is dead center. Then take my E30 where the needle actually moves up and down slightly whether I'm sitting or moving.
__________________
...steven
BMW CCA #146825
1995 BMW 318ti Club Sport 1996 BMW 328ti 1991 BMW 325iC 2003 MINI Cooper S
www.bmwcca.org
1996 328ti is offline   Reply With Quote
Old 04-11-2012, 04:08 PM   #6
bullmand
Senior Member
 
bullmand's Avatar
 
Join Date: Jun 2003
Location: Catonsville, MD
Posts: 1,028
iTrader: (0)
Default

Mine runs consistently in the 185 to 195 degree Fahrenheit range.
__________________
'98 Alaska Blue Sport
'99 Titan Silber 332ti
www.armyfieldband.com
www.baltimorecitypipeband.com
bullmand is offline   Reply With Quote
Old 04-11-2012, 09:31 PM   #7
ti cali ed
Member
 
Join Date: Mar 2012
Location: iowa
Posts: 90
iTrader: (0)
Default

You're temp is fine. The reason for a thermostat is to aid in heating up the motor faster. So when the coolant is cooler the thermo is closed allowing the coolant in the block to heat up when it reaches temp the thermo opens and allows it to travel through the radiator. If the coolant only got to 95 degrees the temp the thermo opened at it would constantly be opening and closing. So they design them to open slighly cooler than what the engine should run at. Now the cooling fans are hooked up to another temp sensor and turn on and off to cool the coolant, they really only run in town as there's enough airflow at hwy speed. However when you turn the a/c the fans kick in to cool the condenser in front of the radiator. This also cools the coolant slightly. Bottom line, you're good. Cool toy though isn't it.
ti cali ed is offline   Reply With Quote
Reply

Bookmarks


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
New to BMW - Simple questions about the 318ti justmanson I'm thinking about buying a ti. 17 10-20-2010 06:05 PM
Stock E36 Questions indiejack I'm thinking about buying a ti. 14 02-01-2010 02:02 AM
Might stay with a ti, Ive got questions. SDKmann General Chit Chat 16 12-06-2007 02:34 AM
Noob from NC (with questions!) kevman284 Personal bios and Introductions 11 02-24-2007 03:15 AM
Not the same old questions.... sort of! Soldo Engine Swaps 9 11-30-2005 02:49 PM


All times are GMT +1. The time now is 12:50 AM.


no new posts
.
Powered by site supporters
vBulletin Version 3.8.7
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ©1999 - 2014, 318ti.org
© vBadvanced CMPS v3.2.2
[page compression: 95.31 k/111.38 k (14.43%)]

318ti.org does not warrant or assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information or products discussed.