JMAR
15+ Year Contributor
- 40
- 4
- Nov 19, 2009
-
houston,
Texas
The MAF and RPM signals are spiking nonsensically. This is a '97 GSX AWD with a 1G block and 2G head, with stock 2G MAF and 1G CAS. The RPM and MAF signals are steady and accurate at times, but they spike up to maximum levels during any operation. This combination was working correctly on AFC Neo before installation of the new ECU with ECMLink chip installed. We have run through all of the obvious tests. RPM will spike to 12,500 when the actual RPM is only ~1500. Same with the MAF sensor, it will spike to an astronomical period, and it happens at exactly the same time as the RPM spikes. No codes are being thrown. It reads RPM and MAF accurately at times, but then starts spiking and throws off all associated sensors. Has anyone seen this before? I'm worried the socket may be damaged on the ECU. Or is there an issue with the CAS wiring? Pictures attached, thank you for any direction you can point us!
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