RPM's drop to zero at WOT and 130KPA
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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). For tuning/troubleshooting questions, please attached a datalog and your MSQ file to your post.
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.
RPM's drop to zero at WOT and 130KPA
I have a customers Lotus Esprit Turbo with MS, the car is sitting on the dyno getting tuned. At WOT the rpms go from a steady climb and momentarily drop to zero, the car bucks but keeps going and bucks again. The log shows the yellow rpms spike dropping to zero, also the "engine1" goes to zero and afr's go lean a tenth of a second later. Any ideas as what could be causing this problem. I attach a log picture and the the complete log if someone wants to help solve problem thank you Juan
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Matt Cramer
- Super Squirter
- Posts: 2951
- Joined: Sat Jul 03, 2004 11:35 am
Re: RPM's drop to zero at WOT and 130KPA
I'll need a bit more information. Could you also post the MSQ? Also, what exactly is it using for RPM input?
Re: RPM's drop to zero at WOT and 130KPA
It uses the factory magnetic sensor inside the distributor. i will find the msq next
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a73camaro
Re: RPM's drop to zero at WOT and 130KPA
First get the car off the dyno until it is running right. There is a lot of noise getting on the MAP sensor signal. Are you using the circuit board MAP sensor that comes with the kit? I will rule out battery voltage noise since the TPS trace is solid.
The RPM input needs to be fixed. You are not getting a good signal to the MS.
The RPM input needs to be fixed. You are not getting a good signal to the MS.