VDO Sender Thermistor measurements

For discussing how to choose sensors and create a wiring harness for all Bowling and Grippo versions of the MegaSquirt® EFI controller.
Forum rules
Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.

If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).

If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days

The full forum rules are here: Forum Rules, be sure to read them all regularly.
Post Reply
58Ratt
MegaSquirt Newbie
Posts: 5
Joined: Fri Jun 09, 2006 6:39 pm

VDO Sender Thermistor measurements

Post by 58Ratt »

I need them! for VDO part number 323 055d. Checked website and they don't give them. they just have 120*c = 37ohms as a midpoint.

http://vdo.carshopinc.com/product_info. ... 9/323-055D
http://www.germansupply.com/home/custom ... 436&page=1

I had found them when i did the initial swap to fuel injection but made the mistake of not writing them down. When i loaded the newest firmware it wiped em!

i am just guessing right now.

thanks,

chris
loren
Helpful Squirter
Posts: 52
Joined: Mon Nov 19, 2007 8:27 pm
Location: Safety Harbor, FL
Contact:

Post by loren »

I tested a VDO 0-250 degree sensor and got:

80 F = 273 ohms
120 F = 143 ohms
180 F = 45 ohms

FYI, 120C = 248F, that should be the high point, not the mid point... assuming it's a 250 degree sensor.

I'd expect that all VDO sensors of the same range should produce nearly the same outputs.

If you've got access to a kitchen thermometer, you can do the same test I did. Ambient, hot tap water, and boiling water cooled to whatever temp you want to use. I chose 180 because I wanted to have a calibrated point right at normal operating temp.
LBC + Technology = ???
58Ratt
MegaSquirt Newbie
Posts: 5
Joined: Fri Jun 09, 2006 6:39 pm

Post by 58Ratt »

sorry should of mentioned it was a 300* unit. 4-24v.

i found something close on their website but its still like 20* off.
Post Reply