Hey guys,
I figure you would be the best people to ask... I just finished a MSII V3 mainboard. Worked flawlessly all except the map sensor. I was using a Map Daddy 4 bar map sensor and one the chips was damaged. any time the board was moved the readings work hop skip and jump all over the place. So I bought a replacement, desoldered the old on and resoldered the new one in. Plugged it in and turned it on. Nothing. the leds blink and thats it. I changed literally nothing else!! I used a voltmeter to check the Map sensor connection and they were all 0v. its not getting power... So, my question is... can the map sensor not working correctly effect the RPM, TPS, and O2 readings? The Coolant temp and MAT readings work fine... crazy business huh? I'd love to hear some suggestions... also, is there a way I can test the capacitors to see if they are working correctly without desoldering anything? Or the resistors? I don't mind taking the time to check things, I just don't have a clue how.
Thanks ahead of time for the help!!!
~Ben
Map Sensor Shenanigans
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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.
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Matt Cramer
- Super Squirter
- Posts: 2951
- Joined: Sat Jul 03, 2004 11:35 am
Re: Map Sensor Shenanigans
It shouldn't affect the RPM or TPS readings. Check the voltage from the Stimulator to the processor port on the TPS and see what is happening there.
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futureos007
- MegaSquirt Newbie
- Posts: 4
- Joined: Tue Mar 24, 2009 6:59 pm
Re: Map Sensor Shenanigans
What voltage would I be looking for?
Also, here may be another reason i have a problem. I shorted d1 to D2 on accident.... the jumper came unsoldered somehow and jumped to the other one. what would that fry? sad day...
Also, here may be another reason i have a problem. I shorted d1 to D2 on accident.... the jumper came unsoldered somehow and jumped to the other one. what would that fry? sad day...
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Matt Cramer
- Super Squirter
- Posts: 2951
- Joined: Sat Jul 03, 2004 11:35 am
Re: Map Sensor Shenanigans
Check the voltage on the ADC port corresponding to the TPS input. See if it has the same range of travel with and without the MapDaddy present.futureos007 wrote:What voltage would I be looking for?
Probably nothing.Also, here may be another reason i have a problem. I shorted d1 to D2 on accident.... the jumper came unsoldered somehow and jumped to the other one. what would that fry? sad day...