Quote:
Originally Posted by jeffcoslacker
You know, I hadn't thought about it, but I wonder if this is actually the problem I've been hearing with aftermarket pumps on these older GMs...I haven't experienced it, but been advising on several at a distance where they put in an Airtex replacement and it still wouldn't run, or failed very quickly, then replaced with a GM OE type and the problem was gone. Wonder if the harness was actually the problem, and the Airtex didn't include that? Hmm.
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It probably varies with the application. I originally bought an Airtex 3210 for my pickup. (The Camaro TPI pump is often substituted for the low-pressure pump originally specified in TBI applications.) The 3210 has the four wires of the harness included. I decided I would not install a Communist Chinese pump, so I sent it back and got the AC-Delco EP241, which at least at that time was made in the USA and only about ten bucks more than the Airtex. The Delco pump also included the harness.
As I said, the harness is a common but not predictable issue. My truck was JUST STARTING to melt the power wire to the pump, and it's got 300,000 miles on it (I put 125,000+ on it, I don't know the service history prior to 170K)