CheapXJ Posted March 27, 2019 Share Posted March 27, 2019 seriously... an intermittent signal from a $17 coolant temp sensor can make this thing act like it's got a blown head gasket, complete with the faux hydrolock syndrome of coolant pushing into the cylinders while starting! apparently this thing can and DOES dump THAT MUCH FUEL into it on startup because the entire map is based on multipliers with baseline duty cycle set by the CTS... I'm absolutely amazed by this persnickity little MFer. 2 days ago it decided to say it was 170deg after sitting overnight and it acted way better on startup. The odd thing is while it was acting all stupid, the gauge was reading properly but every once and a while it would "ding" and "check gauges" would flash for just a brief moment... You'd think this sophisticated JTEC engine controller would buffer and average sensor inputs over a time window... NOPE! Link to comment Share on other sites More sharing options...
Eagle Posted March 27, 2019 Share Posted March 27, 2019 Maybe Boeing wrote the software for the ECU (or is it a PCM {power train control module} on the ZJ?). Link to comment Share on other sites More sharing options...
Pete M Posted March 28, 2019 Share Posted March 28, 2019 all I can think of is self-driving cars... Link to comment Share on other sites More sharing options...
Keyav8r Posted March 28, 2019 Share Posted March 28, 2019 2 hours ago, Pete M said: all I can think of is self-driving cars... I was passing a guy in a Tesla on the interstate the other day and when I looked over I saw he had his seat pushed back and was texting on his phone. Not touching the wheel and never looked up. I punched the hemi and got the H away from the idiot. Apparently, more money than brains. Link to comment Share on other sites More sharing options...
shelbyluvv Posted March 28, 2019 Share Posted March 28, 2019 The Tesla will drive itself. I have a buddy with one and it is the craziest thing. Link to comment Share on other sites More sharing options...
CheapXJ Posted March 29, 2019 Author Share Posted March 29, 2019 On 3/27/2019 at 6:32 PM, Eagle said: Maybe Boeing wrote the software for the ECU (or is it a PCM {power train control module} on the ZJ?). it's still a little toed out so it kinda feels like 737 max right now, lol. and yea, JTEC PCM w/ that silly RE series trans with frequency valve driven governor simulation electronics. Link to comment Share on other sites More sharing options...
Comanche County Posted March 30, 2019 Share Posted March 30, 2019 Seriously examine the engine wiring harness. Look closely for cracks around the injectors and sensors. When one of my 5.9s starting acting crazy this is what it turned out to be. Link to comment Share on other sites More sharing options...
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