"LO" or "142" on digital displpay
Thread Starter
Heel & Toe
Joined: Sep 2002
Posts: 16
Likes: 0
From: spring tx
"LO" or "142" on digital displpay
I have a '94 with an LT1 and it runs terrible. The analog gauges works fine but when the digital coolant display reads 142 or LO my car tries to cut out and die. Anybody else have a similar problem and/or solution.
Thanks,
John
Thanks,
John
Safety Car
Joined: Dec 2006
Posts: 4,290
Likes: 6
From: St Marys GA
the only time I've seen LO is when the car's been sitting outside and it's very cold. It's just letting you know the coolant/oil is very cold, and you should take it easy. If it's displaying this during normal operation, you very may well have a temp sensor issue, as Shifter said. Maybe replacing it will fix the problem.
Pro
Joined: Jan 2004
Posts: 707
Likes: 0
From: Syracuse Utah
142 degrees sounds like the open loop/closed loop cross-over point. I don't know much about it in particular but you basicly have two modes of operation, (1) when the engine sensors are cold, the engine uses preset settings for gas/air mixture; (2) when the sensors and cat warm up, the engine switches over to reading the oxygen sensor and other sensors to set the gas/air mix. It sounds like the problem is in the sensors of one mode or the other. Somebody should be along soon that knows more about that than I do.
Le Mans Master
Joined: Jul 2007
Posts: 5,043
Likes: 8
From: Tampa Florida
Sounds like you might need a '94 FSM Factory Service Manual to troubleshoot this issue and any future problems. I saw one for sale in the C4 parts section:
http://forums.corvetteforum.com/show....php?t=2167296
http://forums.corvetteforum.com/show....php?t=2167296
