How big is the serpentine belt on a 1991 Ford F150?

Use these photos as a guide / diagram of Serpentine belt on 1991 or similar Ford F150, Lariat, 302 engine pickup truck. These are photos from a job we did on a friends 1991, Ford F-150, Lariat pickup truck to bypass the smog / air pump pulley that had seized and we needed an ’emergency repair / temporary fix’.

Why does my serpentine belt keep squealing?

If All Else Fails If the squeal does not stop, or returns quickly, the serpentine belt is glazed. Glazing of the belt occurs after a prolonged period of slipping across the surface of one or more pulleys and can usually be seen as a reflective sheen on the ribbed side.

What causes serpentine belt noise in Ford truck?

If you lube a belt it changes the frequency of the sound the belt makes to one you can’t hear but will not drive the pulleys fast enough and you may end up with a dead battery, dim lights, poor AC, or high engine temps, etc. The slippage and lubricants work together to produce heat in the belt which will destroy the belt rapidly.

When does the serpentine belt need to be replaced?

When your belt displays any of the following: -squeals when accelerating. -chirps constantly. -squeals constantly. -squeals when wet or moist outside. -squeals when cold. -or any combination of the above. The belt must be replaced, but wait… If you replace the belt it may stop for a while but then the noise comes back.

How can I tell if my serpentine belt is slipping?

Belt noises can be diagnosed with a spray bottle of water. With the engine running and the sound audible, lightly mist the grooved side of the belt with water. If the noise disappears or lessens, but then shortly returns, the problem is probably a misaligned pulley. If the noise immediately increases after the belt is misted, the belt is slipping.

What kind of car has serpentine belt problems?

If a belt problem still isn’t solved after doing all of the above, your car may have a specific problem unique to that make and model. Certain vehicles have known serpentine belt problems, such as 1996–2000 Chrysler-built minivans with the 3.0-, 3.3-, and 3.8-liter engines.

How much does it cost to replace a serpentine belt?

The replacement cost is only going to be between $100 and $200 in most cases. The belt itself will cost between $25 and $80 while the labor costs will probably be between $75 and $120. Taxes and fees will be added onto these prices too. The ease of accessing the serpentine belt will determine how much the labor costs are.

How big is the bypass smog pump belt?

We came up with…. A ‘Mileage Maker’ 827K6MK / 6PK2100 which corresponds to a; Goodyear 4060827, Gates K060827 or K060828 & Dayco 5060827 or 5060825. This belt fit and works perfectly for our particular situation, again, early 1990’s, Ford, F150, Lariat pickup with Ford 302 engine, when smog pump is removed / by-passed.

What is the bypass pulley on a Ford F-150?

Lots of guesses. A couple mentioned some ‘bolt head’ that the belt would hit if you tried to ‘short cut’ between other pulleys without going around the smog pump. The ‘work around’ that was suggested was another ‘bypass pulley’ or ‘delete pulley’ installed in place the Ford factory smog pump.

What kind of belt does a Ford F150 use?

My 88 5.8L F150 with the pump removed uses a NAPA 25-060910 belt. Fits perfectly. I wouldn’t mind knowing aswell, I want to do the same thing on my 95 5.0.

How do you remove the serpentine belt on a Ford F-250?

While holding the tool in place to release tension, unhook the serpentine belt from the tensioner pulley. Once you have it off one pulley, you can release the tool to be able to use both hands to remove it from the rest of the pulleys. F-250s and Super Duties with gas engines will have the same belt routing diagrams as their F-150 counterparts.

Where can I find a serpentine belt routing diagram?

Select the specific year and make of your vehicle. Take note of the Illustration number and then Scroll to the bottom of the page to find your Free Serpentine Belt Routing Diagram. What’s that squeal coming from under the hood?

Where is the serpentine belt tensioner on a Ford truck?

It’ll be in the gap between the engine block and the fan. Insert either your 1/2” drive ratchet or your belt remover tool into the tensioner. Rotate clockwise towards driver side. Figure 2. The serpentine belt tensioner is highlighted above. It looks and operates the same way in most Ford V8s and V6s. That includes diesels.

What should I do if my serpentine belt fell off?

If the battery warning light comes up while driving, the serpentine belt is the first thing to check. There are two “glow levels” of the battery light if you have a serpentine belt problem: This is the case if the belt snapped or fell off.

Is the water pump driven by the serpentine belt?

Another important device driven by the serpentine belt is the water pump. This is not always the case as on a lot of cars the water pump is driven by the timing belt. You should have this in mind so you don’t falsely “accuse” the serpentine belt for overheating.

What happens when the serpentine belt snaps on a Ford truck?

The drive belt (or serpentine belt) powers the accessories that run off your engine. That means your alternator, your power steering pump, your air conditioning compressor, and your coolant pump all die instantly if your serpentine belt snaps.

When to replace a broken serpentine engine belt?

Using a gauge to check for belt wear (Image courtesy of tradetrucks.com) Have the belt replaced whenever a related component is replaced (a broken belt is often associated with a damaged or seized pulley on one of the engine accessories).

What kind of belt does a Ford F-150 use?

Use the fitment form at the top of the page to select your exact year and engine type for your Ford F-150. Designed for high mileage multiple-accessory drives, Dayco’s W profile belt (patent pending) is the most innovative advancement in multi-rib belt design in over 25 years.

What are the serpentine belts on a 2005 Ford F150?

The 2005 Ford F150 Serpentine Belt Diagrams, tensioners, idlers and idler pulleys listed below are from GATES and they shows the serpentine belt routing for the year, make, model, engine shown. There’s lots more information on this site for your Ford vehicle.

When to replace the belt on a Ford F-150?

A worn belt will look both dry and cracked, and it will give you a nasty squeal when starting your truck. Over time, the squeal will worsen and be constant. When the squealing starts, it’s time to replace the belt. Leaving the belt on will lead to breaking, which will leave the your F-150 or F-250 inoperable and you stranded.

Where is the belt tensioner on a Ford F-150?

Locate the belt tensioner, it’ll look like a pulley with an arm coming off of it. Figure 1. You don’t have to remove the radiator shroud to access the tensioner. It’ll be in the gap between the engine block and the fan. Insert either your 1/2” drive ratchet or your belt remover tool into the tensioner. Rotate clockwise towards driver side.

What should the battery voltage be in a 1990 Ford F-150?

The alternator on a 1990 Ford F-150 charges the battery while the engine is running. The alternator is driven by the serpentine belt. When the engine is running and the alternator is working properly, the battery’s voltage should be about 14.5 volts.

Where can I buy belt for Ford F150?

Shop AutoZone for Ford F150 Belt. 10% OFF $75. Use Code: DIYSAVE10 Online Ship-to-Home Orders Only

Which is a symptom of a failing belt tensioner?

Unusual Belt Wear This is another symptom of a failing belt tensioner. Depending on the type of drive belt that you have in your car, then you should see even patterns throughout the length of the belt. Over time, these belts tend to wear out.

What does the spring on a belt tensioner do?

The spring keeps the drive belt in its correct tension. The tensioner arm is a mechanism that allows for the adjustment or the removal of the drive belt. It delivers enough slack on the drive belt for easier adjustments. The base is what holds all the different parts together.

How do you remove the serpentine belt on a Ford F-150?

Rotate it clockwise towards the driver side to release tension. You can now release the tool and use both hands to remove the rest of the belt Figure 2. After attaching your ratchet to the tensioner arm, rotate clockwise. While slack, remove serpentine belt from engine. (Related: How to Change your Serpentine Belt – Ford-Trucks.com)

How do you remove a tension pulley on a Ford F-150?

To remove the belt, you will need a stretchy belt installer/remover. Insert your 1/2″ drive ratchet or belt removal tool into the hole on the tensioner. Rotate it clockwise towards the driver side to release tension. You can now release the tool and use both hands to remove the rest of the belt Figure 2.

What kind of tensioner does Ford F-150 use?

Both the F-150 and Super Duty have used the same type of tensioner for their engines for the last decade or so. Since there’s a staggering number of engine configurations in both the F-150 and Super Duty, we’ve compiled the accessory belt diagrams at the bottom of the page.

How do you remove tension from Idler on Ford F-150?

Insert your 1/2 drive ratchet or belt removal tool into the hole on the tensioner. Rotate it clockwise towards the driver side to release tension. While holding the tool, unhook the belt from a pulley. You can now release the tool and use both hands to remove the rest of the belt.

Do you need a serpentine belt on a Ford F-150?

This article applies to the Ford F-150 (2004-2014) and the F-250, F-350 Super Duty (2005-2014). The serpentine belt is vital to keep your Ford F-150 or Super Duty running. A worn belt will look both dry and cracked, and it will give you a nasty squeal when starting your truck. Over time, the squeal will worsen and be constant.

What’s the average life of a Ford serpentine belt?

The average lifespan of a serpentine belt is about 60,000 miles. It can be considerably less if the belts are low quality or if the truck has been used in severe conditions. Pop the hood. On the radiator shroud you’ll see a sticker with the layout of the serpentine belt. If not, locate your serpentine belt layout in the images below (figure 3).

How often do serpentine belts need to be replaced?

That means that you should make sure they’re not cracking every 7,500 miles. The average lifespan of a serpentine belt is about 60,000 miles. It can be considerably less if the belts are low quality or if the truck has been used in severe conditions. Pop the hood. On the radiator shroud you’ll see a sticker with the layout of the serpentine belt.

How big is the belt on a smog pump?

Finally got the old smog pump off and replaced with a smaller belt. Running a 87.5″ dayco belt on my 1991 F150 XLT Lariat 302. Was a b***h to get on too.

When did the Ford F-150 smog pump freeze up?

Purveyors of Electronic, Musical and Vintage goods from then, now and in between. Since 1982. These are notes from our successful efforts to find and install a replacement serpentine belt on a 1991 Ford F-150, pickup truck when the smog pump seized / ‘froze up’.

What kind of engine has a serpentine belt?

3.5L Engine Serpentine Belt in Chev… 4.2L Inline Six Cylinder Engine Bel… 3800 V6 Belt Routing Picture and Ro… Supercharged 3.8L V6 Drive Belt rou… Vortec 5.3 and 4.8L V8 Truck Belt R…

Shop AutoZone for Ford F150 Belt. 10% OFF $75. Use Code: DIYSAVE10 Online Ship-to-Home Orders Only

What kind of engine does a 1994 Ford F150 have?

I just bought a 1994 ford F150 ext. Cab for 2,500.I was really paranoid considering it has 314275 miles on it.but the thing purrs like a kitten.I didn’t think to ask the previouse owner but is it possible this thing could have been rebuilt?if not,its the toughest engine I’ve ever had. 36 people found this helpful.

When to replace serpentine belt on Ford 4.9 liter?

Many maintenance items can now reach 100,000 miles before replacement or servicing is required. Unfortunately this has not trickled down to the modern-day serpentine belt. Although the 4.9 liter ford engine does come with a hardy belt from the factory that I have seen go for up to 75,000 miles.

How to replace a drive belt on a 4.9L Ford?

Engine belt diagrams 4.9l ford. Replacing a drive belt without a diagram is not easy. By request I have posted a picture of the belt routing for this extremely popular Ford V8 engine. Drive belt failures are still one of the leading causes of on the road breakdowns.

How is the serpentine belt in a Chev?

Pictures, diagrams of serpentine belt routing. 2.4L. Belt Diagram 3.4 DOHC Cam Engine Drive Belt Diag… 3.5L Engine Serpentine Belt in Chev… 4.2L Inline Six Cylinder Engine Bel… 3800 V6 Belt Routing Picture and Ro…

What kind of belt is on a Vortec truck?

4.2L Inline Six Cylinder Engine Bel… 3800 V6 Belt Routing Picture and Ro… Supercharged 3.8L V6 Drive Belt rou… Vortec 5.3 and 4.8L V8 Truck Belt R…

How big is the serpentine belt on a 1991 Ford F150?