I have been having a recuring issue with my 94 (OBD1) cruiser. It will intermittently throw a CEL and go into limp mode. The issue I am having is that it will not set the code after I shut it off so I can not read the code to find the fault.
It only happens when the truck is started and before it is up to operating temperature. Even if I warm up compliantly it will sometimes still throw the code.
Beat of all (insert sarcasm here) it is intermittent.
Here are some of the changes that have been made.
O2 sensors in the exhaust manifold
Single aftermarket cat (deleted duel cat setup)
"air" pump disabled.
EGR disables and resistor installed in harness.
Any ideas on where to start will be appreciated.
It only happens when the truck is started and before it is up to operating temperature. Even if I warm up compliantly it will sometimes still throw the code.
Beat of all (insert sarcasm here) it is intermittent.
Here are some of the changes that have been made.
O2 sensors in the exhaust manifold
Single aftermarket cat (deleted duel cat setup)
"air" pump disabled.
EGR disables and resistor installed in harness.
Any ideas on where to start will be appreciated.
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