Threw the belt, engine heat up

07 Boss

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Yep, but have an extra relay and fuses in hand. I just blew the relay last week and my aeroforce threw the temp alarm (set to 240). I shut it down and pulled into a parking lot. All fuses were fine, so swaped the relay and all was well. Have had the 20A fuse blow before as well.

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I have a relay in my glove box. But I have never had an electrical issue with my pumps. The blowing of the fuse bothers me a bit though. I think I have a 20 amp on there and it has never blown.
 

Pentalab

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According to Meziere's website, the EWP 346 for the Modular 4.6 is supposed to have an 11-12 amp draw in normal use.

https://www.meziere.com/Products/Co...d/Electric-Pump-Ford-Modular-with-Pulley.aspx

If it's drawing 20+ amps, something's wrong and is causing extra drag on the pump motor e.g. bad pump bearings.
That 11-12 amps may well be with 12 vdc. I measure 14.75 vdc at the battery terminals, with eng on, and sitting in the driveway, idling.

If it is 11-12 amps with 12 vdc...it could easily be 13.5 - 14.75 amps when using 14.75 vdc from the battery.

Typ start up current is triple the running current on most AC electric motor's I have measured..and I believe it's similar or the same on DC motors as well. But still, that start up current usually only last 1-3 secs, then it drops down to normal running current.

That pump will have a heavy load on it, and water does not compress. Abt the only valid way of determining any of this would be to use a clamp on DC ammeter, and actually measure the start up current, then run current. The bearings would have to be beyond trashed to put a lot more strain on it.

They state it's good for 3000 hrs, so who knows.
 

scramblr

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I blew the 20A fuse once or twice over the years. Then I heard the bearings going out (after 10 years), so I sent the pump to Mezeire to get refreshed. Just put it back in last month and last week the relay went out. That relay was also 10+ years old. Haven't blown a fuse since the refresh and the new relay is holding fine.
 

Wes06

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I had my fuse blow on my air compressor one day, was aired out, no spare fuses.

Luckily my headlights had the same fuse, used it to air back up, then swapped the fuse back for headlights since it was 2am.

Always keep a pack of assorted fuses in the car now
 

Pentalab

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I had my fuse blow on my air compressor one day, was aired out, no spare fuses.

Luckily my headlights had the same fuse, used it to air back up, then swapped the fuse back for headlights since it was 2am.

Always keep a pack of assorted fuses in the car now
Good point. Keep an assortment of fuses in the bin box, trunk, glove box etc. Some folks will also keep
a spare fead belt and breaker bar in the trunk..cuz u never know.
 

Wes06

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Good point. Keep an assortment of fuses in the bin box, trunk, glove box etc. Some folks will also keep
a spare fead belt and breaker bar in the trunk..cuz u never know.
yup, especially now that im supercharged, a spare belt and breaker bar is a very good choice.
Ive been debating re-doing my air setup, mounting it on left/right sides of the trunk, and putting a full size spare in the wheel well cause i currently have no spare. lol
 

Juice

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Keeping spare fuses is not bad advice.
Keeping spare fuses because one blows randomly? No, there is an issue that needs to be addressed. Id be going back to the belt driven WP after the second fuse.

Ps: I carry no tools or spares of anything in my daily.
 

Wes06

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I mean my compressor blew exactly 1 fuse on me, no idea why. never happened since.
 

Doug Huggard

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Or just have a spare belt in your trunk and keep your mostly reliable fully mechanical water pump. There is a reason just about every vehicle manufacturer uses mechanical water pumps. No it's not just cost. Even the brand I work on for a living (jaguar/land rover) use mechanical pumps (although they are variable flow controlled electronically)....and they like to over complicate everything so that's saying something! Lol
 

Doug Huggard

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Btw fuses are rated to blow above their amp rating. The rating on the fuse is sustained draw. The fuse rating takes into account amperage spike at power on....unless they are a quick blow fuse
 

07 Boss

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Over the years, actually as a young boy scout, I have learned to Be Prepared. I always have a serpentine belt, fuses, a relay, extra wire, water and a few hand tools in the car wherever I go. When I have gone on road trips I throw the stock mechanical pump and a spare alternator in the trunk. Maybe I'm weird but it is pretty rare that I get stuck anywhere.
 

1950StangJump$

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That was certainly a virtue 30 years ago. Now? With cell phone service covering 99% of the U.S. and me having the economic means to get home through alternative methods, I'd just as soon call a tow truck, get dinner and hotel room, rent a car, and fix the Mustang in the comfort of my own garage on my own schedule.

The greasy tools and parts can stay on the shelf until needed.
 

Laga

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That was certainly a virtue 30 years ago. Now? With cell phone service covering 99% of the U.S. and me having the economic means to get home through alternative methods, I'd just as soon call a tow truck, get dinner and hotel room, rent a car, and fix the Mustang in the comfort of my own garage on my own schedule.

The greasy tools and parts can stay on the shelf until needed.
With the setup of the Edelbrock E-Force SC, even if I carried an extra belt and tools. I doubt I could replace a broken belt on the side of the road on a hot engine. You have to pinch and squeeze the belt behind the special bracket that holds the backwards alternator, and then get underneath to route around power steering pump.
 

Pentalab

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Btw fuses are rated to blow above their amp rating. The rating on the fuse is sustained draw. The fuse rating takes into account amperage spike at power on....unless they are a quick blow fuse
You can get fuses in fast, normal, or slow-blow ( for stuff like electric motor start up). Generally speaking, you never size a fuse to run at 100% of it's rating, maybe 80% at most.
 

Pentalab

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That was certainly a virtue 30 years ago. Now? With cell phone service covering 99% of the U.S. and me having the economic means to get home through alternative methods, I'd just as soon call a tow truck, get dinner and hotel room, rent a car, and fix the Mustang in the comfort of my own garage on my own schedule.

The greasy tools and parts can stay on the shelf until needed.
Getting your car towed 100-300 miles back home would be an expensive option. And no dealer will have the belt required for my Roush M90. On a side note, the Roush M90 belt is a one off thing. It's actually an 8 rib belt...with 2 x ribs cut off. On trips longer than 40-50 miles from home, it might be wise to toss a few items in the trunk. Even if you required help getting a belt on, at least you would have the new belt on hand.
 

MrAwesome987

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With the setup of the Edelbrock E-Force SC, even if I carried an extra belt and tools. I doubt I could replace a broken belt on the side of the road on a hot engine. You have to pinch and squeeze the belt behind the special bracket that holds the backwards alternator, and then get underneath to route around power steering pump.
I can swap the belt on my DOB setup in like 10 minutes or less provided nothing broke. Engine hot or cold. Piece of cake.
 

jlmotox

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I was having belt issues on my whippled 3v until I installed the DOB Frankentensioner. I still carry a spare belt, gloves and a breaker bar for the tensioner and can change it in a few mins on the side of the road (done it a few times)
“Knock on wood” so far the Frankentensioner has not lost a belt...
 

tabstang

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Searching for other whipple issues and saw this - I highly recommend the Gates RPM belt. I'm running it with the OEM-size tensioner pulley, working great after LOTS of problems with the lower-spec belt.
 

07 Boss

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Searching for other whipple issues and saw this - I highly recommend the Gates RPM belt. I'm running it with the OEM-size tensioner pulley, working great after LOTS of problems with the lower-spec belt.

Do you have a part number for that Gates belt? I've tried to do it by size but can never find anything in the right length. What size blower pulley are you running?
 

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