4L70E pump issue
4L70E pump issue Hi, I had some whining coming from my trans, long story short I am pretty sure a cracked flexplate did this to the pump in my trans. Are these parts reusable, or should I just scrap them?
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Joined: Aug 2010
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From: Ann Arbor, MI
It is hard to tell from those pictures.
Replacing the bushing would be a typical thing to do with the pump out.
However, the pump surface seems to have pretty deep gouges. I think the guideline is that if the gouges can catch your fingernail the pump should be replaced. If true, be sure to get an ISS (Input Speed Sensor) pump, probably 2006 or later.
Or give us links to higher res pics and one of the pro builder might be able to give you a more definitive opinion.
Replacing the bushing would be a typical thing to do with the pump out.
However, the pump surface seems to have pretty deep gouges. I think the guideline is that if the gouges can catch your fingernail the pump should be replaced. If true, be sure to get an ISS (Input Speed Sensor) pump, probably 2006 or later.
Or give us links to higher res pics and one of the pro builder might be able to give you a more definitive opinion.
