Wiper fluid pump replacement issue

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  #1  
Old 12-08-19, 01:45 PM
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Wiper fluid pump replacement issue

I replaced an original Denso waist fluid pump on a 2008 Toyota Corolla. The Denso pump was split in half, no clue what caused it. I figured it would be a simple replacement job but it has not been the case.
- after putting in a Napa aftermarket pump, the pump rims but nothing came out of the wiper nozzles
- a returned that pump thinking it was a dud and put in another only to still have no fluid coming out of the nozzles
- I connected tried two new wiper fluid nozzles thinking they were clogged and that didnít work
- I connected the hose to one nozzle directly and got a spray but it was a puddle type of spray on the bottom of the windshield

I think itís one of 2 potential issues

- the original Denso pump generates more spray pressure than the aftermarket pump?
- the hose needs replacing? I see no holes or wear in the hose

anyone have any ideas or come across something similar?



 
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Old 12-08-19, 03:49 PM
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replace hoses and any connectors in line
 
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Old 12-08-19, 04:30 PM
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You need to work it out in staged manner - is there flow out of pump? Before the first connection? After connection? After T? And so on. Those pumps do not generate monstrous stream, not fire trucks. You have blockage somewhere.
 
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Old 12-08-19, 05:07 PM
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I have flow

I just donít know if itís enough flow. I tried it with no nozzles and the fluid is flowing in the hose....there is just no way to tell the strength of the flow

I add both new nozzles and nothing comes out of the nozzles l. I add one and it puddles out

think I will just pull the whole hose and replace it.

what are the odds of 2 bad aftermarket pumps?
 
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Old 12-09-19, 07:22 AM
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I had THREE bad alternators out the box in one night once. Al's Auto Supply. Store is no more anyway.
Maybe find OEM pump at a salvage yard?
 
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Old 12-09-19, 07:04 PM
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I was actually thinking about that last night, I will call the wrecker tomorrow and go that route if the hose replacement does not work

the only downside is that would be the third time I would have to get to the dang thing through the wheel well as itís inside the fender.

 
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Old 12-10-19, 07:12 PM
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I'd say, this time make it perfect. Disconnect hoses and run them from jumped pump. While it's OUTSIDE.
 
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