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Still not running better. Intake gaskets are replaced. I can't find any vac leaks but still seems to be running lean. When I disconnect the MAP sensor vac feed and plug it off, it starts to run rich, and stays running when shifted into gear (wich is more than it has done in a while), starts and idles without hitting the gas when the engine is hot or cold. I hit the throttle and some black smoke comes out but then revs nicely. When I plug the MAP vac line back into the sensor it starts to run rough (lean I imagine) and will not start without using the gas.I have 2 map sensors here and it acts the same way with both of them. One is on my 4runners chevy 4.3l and that runs fine so I don't think the MAP is bad.Could the computer be reading the info from the MAP sensor wrong? Bad PCM?Is there anything else that rings a bell with anyone?
Still not running better. Intake gaskets are replaced. I can't find any vac leaks but still seems to be running lean. When I disconnect the MAP sensor vac feed and plug it off, it starts to run rich, and stays running when shifted into gear (wich is more than it has done in a while), starts and idles without hitting the gas when the engine is hot or cold. I hit the throttle and some black smoke comes out but then revs nicely. When I plug the MAP vac line back into the sensor it starts to run rough (lean I imagine) and will not start without using the gas.
I have 2 map sensors here and it acts the same way with both of them. One is on my 4runners chevy 4.3l and that runs fine so I don't think the MAP is bad.
Could the computer be reading the info from the MAP sensor wrong? Bad PCM?
Is there anything else that rings a bell with anyone?
