Lacking power, 87 Sierra 5.7l TBI

[Pmcb]

I will look into the knock sensor, maybe i can change that first while trying to get O2 sensor off .

 

[squaredeal91]

Sorry for not clarifying, it seems to have less power than it did just two weeks ago. I notice it going up hills the most.

Yes if going up hills. Ping alert. Knock sensor possible

 

[Redfish]

I will look into the knock sensor, maybe i can change that first while trying to get O2 sensor off .

Knock Sensor.

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[Pmcb]

The lack of power problem solved. As I was looking for vacuumed leaks and wires crossed, I discovered that the U shaped brackets that holds down the distributor had slipped and the distributor moved. I reset the timing let the ECP reset and the power is back, I did replace the O2 sensor. the one in there was stripped so I had to clean up threads. I have not replaced the knock sensor yet. At my age there is a limit as to how many times i can crawl under a vehicle.
Thank you all for the support, I am enjoying working on my cars again.

 

[squaredeal91]

Awesome! I love the simple ones