My friend has a 1999 3.9L Dodge Dakota and the original clutch failed, so he replaced it with a Hayden. This one was locked up so the fan ran at full-blast all the time. At least the engine didn't overheat.
Then he replaced it with an Imperial. This one doesn't seem to lock up enough and allows the engine to overheat at idle and when driving at low speeds. At idle, the air coming off the fan is VERY HOT, but the fan clutch does not appear to engage as it should to speed up the fan. Turning on the heat at full-blast is enough to keep the engine from overheating.
The Hayden and the Imperial look identical except for a 2-digit number cast into the housing. I expect they're made by the same company in the same factory.
I found a thread on dieselstop where someone was complaining about their experiences with Hayden fan clutches..the first one they got was locked up, the second one didn't engage right, neither did the third one so they gave up and reinstalled the OEM clutch (which they replaced because they thought it was engaging too much at lower temperatures).
My friend is going to return the Imperial clutch and get another Hayden one. I suspect he'll end up getting the same one he got the first time, they had exactly one on the shelf when he called and I bet it's the one he returned as defective the first time (this is NAPA by the way).
Then he replaced it with an Imperial. This one doesn't seem to lock up enough and allows the engine to overheat at idle and when driving at low speeds. At idle, the air coming off the fan is VERY HOT, but the fan clutch does not appear to engage as it should to speed up the fan. Turning on the heat at full-blast is enough to keep the engine from overheating.
The Hayden and the Imperial look identical except for a 2-digit number cast into the housing. I expect they're made by the same company in the same factory.
I found a thread on dieselstop where someone was complaining about their experiences with Hayden fan clutches..the first one they got was locked up, the second one didn't engage right, neither did the third one so they gave up and reinstalled the OEM clutch (which they replaced because they thought it was engaging too much at lower temperatures).
My friend is going to return the Imperial clutch and get another Hayden one. I suspect he'll end up getting the same one he got the first time, they had exactly one on the shelf when he called and I bet it's the one he returned as defective the first time (this is NAPA by the way).