My truck will not go over 20 rpm even when reeving, but sometimes it will. would you know any reason it would do this

My truck will not go over 20 rpm even when reeving, but sometimes it will. would you know any reason it would do this
Experienced mechanics share their insights in answering this question :
You would need to first to check the fuel pressure to see if the fuel pump in the tank and on frame is pumping the correct pressure and the filter is not clogged. Replace the fuel pump on frame and in tank then replace the filter if pressures are below 35 to 45psi. if you need help diagnosing the problem due to needing a mechanic like one from YourMechanic to do all the tests and replace the pumps and filter for you. If fuel pressures are not low and test okay then you may have clogged catalyst.

How to Identify and Fix Common car Problems ?

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5.0L V-8 / 195 HP / 270 ft.
How Long Do Ford E-Series Last? E-series vans typically reach up to 300,000 miles before reaching points of critical breakdown–they are tanks! My van came with 170,000 miles on it and I`m now at 186,000 miles–still haven`t run into any issues. The E-series includes the E150, E250, and E350.
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Background of the Ford Econoline

The E-series vans were the top-selling models in the United States between 1980 and 2015 with the model line`s discontinuation.

The standard engine for the E-150 is a big 300-cubic-inch (4.9-liter) in line 6-cylinder.
Since its founding in 1903, Ford has been a leader in reliable, powerful automotive manufacturing. You can generally expect a Ford to last around 200,000 miles or 13 years.
The model has also built a name for being reliable, with many drivers boasting impressive odometer readings. So, how long will Ford`s F-Series pickup truck last? About 200,000 to 300,000 miles, claim various auto sites, enthusiast forums, and owners.
The gasoline engines, you`ve got your spark plugs, intake manifold possibly, and brake callipers. Other than that, they`re really reliable. There`s little else goes wrong. They`re well built.
Medium Van: Ford Transit Custom

It`s an all-round great package that our customers shower with praise for its reliability and durability. The finance companies like it too – it regularly appears in their top ten of most reliable vans and, like most Ford vans, it comes with the 3 year / 100,000 mile warranty.

For 1982, estimates are 26 est. hwy. and 18 EPA est. mpg” for the E-100/150 with standard 4.9L (300) Six and optional 4-speed manual over- drive transmission.
This is a 1971 Ford Econoline Sportsmobile 4×4 camper, it`s been significantly modified from its original factory specification and now has lifted suspension, four-wheel drive, a 306 cubic inch Ford V8 crate engine, and a pop-top camper conversion.
Ford Econoline E-150 Van 4th Generation 5.0 V8 EFI Automatic, 4-speed.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

My truck will not go over 20 rpm even when reeving, but sometimes it will. would you know any reason it would do this
ANSWER : You would need to first to check the fuel pressure to see if the fuel pump in the tank and on frame is pumping the correct pressure and the filter is not clogged. Replace the fuel pump on frame and in tank then replace the filter if pressures are below 35 to 45psi. if you need help diagnosing the problem due to needing a mechanic like one from YourMechanic to do all the tests and replace the pumps and filter for you. If fuel pressures are not low and test okay then you may have clogged catalyst.

My car won’t go past 35mph
ANSWER : Hi there. From the description you provided, your vehicle has problems with the transmission again. You stated it will not shift into 3rd gear again, like before the transmission was rebuilt. If the transmission is again the problem, it should be covered under warranty. It could be a faulty shift solenoid. The shift indicator not reading properly could be a faulty transmission position sensor. If this is an overall lack of performance issue, according to your last statement, then possibly you have a restriction in the exhaust system. I recommend having your vehicle’s problems inspected and diagnosed by a certified technician from YourMechanic.

Truck loses power and tries to stall
ANSWER : Hey there. This is a common sign of a faulty ignition coil. Ignition coils are coated with a varnish-like insulation that becomes brittle over time after being stretched then contracted repeated as the copper beneath them expands and contracts at a higher coefficient than the insulation.

The insulation develops micro fractures that open when heated and close when cooled. When open, they allow shorting of coil windings and decrease or eliminate the coil’s ability to function. This type of temperature cycling happens because every time you shut the engine off, the fan stops running, the coolant stops flowing and the temperature under the hood rises. Every time you start the engine again the coolant flows, the fans turn on, and the temperature drops. The areas in and around the tops of the combustion chambers, the exhaust manifolds, and the exhaust components are hundreds of degrees hotter than the outside temperature under the hood. When this heat dissipates and is absorbed under the hood, it is trapped causing this cycling effect.

Components that contain heat sensitive materials include parts like coils, injectors, igniters, and some sensors. Any of these may be potentially subject to this same kind of heat problem which can be very difficult to trace. I would recommend having an expert from YourMechanic come to your location to take a look at your truck to properly diagnose the loss of power.

When starting RPM of car starts going down and then engine stops.
ANSWER : It sounds like you may have a fuel supply problem in getting the proper amount of fuel to the fuel injectors which may be caused by a bad fuel pump or potentially faulty fuel injectors. This can happen when the pump itself is not working properly or when the fuel pressure regulator is not maintaining the proper fuel pressure in the fuel system causing the engine to starve for fuel. This can also happen when there is insufficient connectivity to the fuel injectors which can cause an intermittent fuel spray pattern into the intake system resulting in a lean fuel condition or the motor otherwise starving for fuel.

I have a 2013 hyundai elantra. today my car would not shift out of 1st gear and would not go over 20 miles per hour it was like i
ANSWER : It sounds like the transmission may have gone into limp mode. An electronic or mechanical issue with the transmission is telling the transmission control unit to keep the speed and shifting down. If you are the original owner of the vehicle, the engine and transmission are under a 10 year or 100,000 mile warranty. If you are not the original owner, the engine and transmission are still covered for 5 years or 60,000 miles. You should call your local Hyundai dealer service department and have the vehicle towed in as soon as possible.

My truck is stuck in 4L or 4H also the speedometer is saying I’m going 100 mph when I’m only going 20 mph. Is my GEM Module bad?
ANSWER : Hi there. The issue could be with the output shaft speed sensor on the tail shaft of the transfer case. The output shaft speed sensor is a sensor the registers the speed of the output shaft and lets the computer (ECM) know how fast the vehicle is going. If the output shaft speed sensor is working properly, then there is an issue with the electrical wiring from the output shaft speed sensor and the dashboard. If you need further assistance with the speedometer and 4WD acting up, then seek out a professional, such as one from Your Mechanic, to help you.

My 2005 Acura TL is not accelerating but rpm is going up and down erratically. What is causing this?
ANSWER : Hey there. If the vehicle has a manual transmission, your issue can be caused by a worn clutch. When the clutch is worn, it no longer has the clamping strength to transmit power from the engine to the transmission. This can cause the engine to rev but the vehicle speed does not equal the engine speed.

If the vehicle is equipped with an automatic transmission, the problem can be caused by a couple of issues. One could be the torque converter. The torque converter transmits power from the engine to an automatic transmission in a similar manner that a clutch does with a manual transmission.

Also, automatic transmissions do have internal clutches but they are considered "wet clutches" as they are immersed in automatic transmission fluid. If the internal clutches are worn, your vehicle can act similarly to a worn manual transmission clutch – the engine revs but the vehicle speed does not match. Have a certified technician diagnose your transmission slipping concern as soon as possible.

Car will not start, lights go on ,dashboard lights go on, sometimes will start in Neutral, sometimes I need to move steering wheel
ANSWER : Although it’s very difficult to diagnose your problem without being there, it looks like you’ve got an ignition cylinder assembly or other electrical problem in the steering column that is causing your Voyager difficulties. There are several individual parts that make up the ignition system, including several safety devices, so it’s best for you to have a mechanic complete a car is hard to start inspection.