Questions tagged [truck]

A light, medium, or heavy duty vehicle often used for transporting goods. Frequently used to refer to consumer pickup trucks (light duty), but can also refer to large panel vans and diesel utility trucks (medium duty), and large 3-axle diesel trucks (heavy duty, aka lorry, big-rigs, semi-trucks).

Filter by
Sorted by
Tagged with
2
votes
4answers
14k views

Why is there a “DO NOT PUSH” sign on the back of some trucks?

I often see a "DO NOT PUSH" sign on the back of trucks (I believe they have all been large semi-trailer dump trucks). I've even seen "YOU PUSH IT YOU OWN IT" signs on a few. This raises two questions ...
0
votes
0answers
25 views

Would you replace an EGR or hose down the existing one with throttle body cleaner?

I realize that some of this can be botttled down to 'how much down-time is it worth to me' or 'what is the fastest way to fix a faulty EGR' but that isn't my question. I can handle a day or two of ...
0
votes
1answer
421 views

Manual transmission grinds shifting into 2nd gear, only when cold

I have a 1995 Chevy K1500 pickup, V8 5.0L engine. The 5-speed manual transmission was rebuilt about 10 years ago. Recently, I’ve noticed that when the vehicle is cold, I get a grinding noise from ...
2
votes
1answer
76 views

Transmission is slow to engage

I have a 1988 GMC Sierra 4x4 truck, and I recently bought a rebuilt NV3500 transmission from a 1995 chevy truck (I picked this year, because from 1993 onward, this particular transmission used a ...
0
votes
0answers
14 views

Alarm horn pulse too short for horn relay, horn sometimes doesn't blow

I just recently installed an aftermarket alarm on a 2002 ram 1500. The alarm is an Avital 3100lx. When testing the lock and unlock functions I noticed that sometimes the horn would not work when ...
3
votes
4answers
13k views

Should I over- or under-inflate my tires when towing?

We're about to take a trip across the country towing 5000lb (2300kg) with our SUV. It's rated for 9k, so I'm not worried about that, but I'd like to know how much to inflate my tires. Advice on the ...
4
votes
3answers
8k views

2006 Nissan Titan makes odd sound, but only at certain speeds

My 2006 Nissan Titan makes an odd sound, like a grinder, mostly when travelling steady at 35, 40 or 45 miles per hour. Even 1-2 mile per hour difference will cause the noise to stop. The noise will ...
-1
votes
1answer
27 views

Center support and bearing replacement [closed]

My 1980 Plymouth Arrow truck engine and transmission have been changed to a Nissan Z24 engine with manual transmission. My question is I ordered the center support bearing for a Plymouth Arrow Truck. ...
1
vote
1answer
27 views

Why doesn’t my truck crank up after I changed the starter,neutral safety switch and starter relay?

I had my truck stored away for about a year and the battery went bad so I changed it,but the truck didn’t crank until I put it on neutral or sometimes it would start on park.Today I had the neutral ...
0
votes
1answer
432 views

No pressure in clutch after bleeding the system

I have a 1992 GMC C2500. When I got it there was no pressure at all in the clutch. I bleed it from the bleed valve for about 20 minutes to make sure there was no more air bubbles coming out. After all ...
0
votes
1answer
3k views

Heavy Truck OBD2 diffrent from Car OBD2?

My problem: I try to read data’s from Heavy trucks(40Tonns) via OBD2. This is needed for a research project. I have already read many articles about OBD2 and interfaces for OBD2 like about the ELM ...
0
votes
0answers
17 views

My bronco is having transmission issues

I have a 1996 full-size bronco with a 351W and an E4OD trans. I’m having to tach up to or past 3k rpm it to shift. It does way better in higher gears and reverse. Also, when i drop it into 1st and 2nd ...
1
vote
0answers
634 views

Clutch pedal won't go to the floor to engage neutral safety switch

This is a 1993 K1500 Sierra 4x4. I just replaced the clutch master and slave cylinders and bled the line. The clutch has pressure but it won't go all the way down to engage the neutral safety switch....
0
votes
0answers
26 views

truck is in neutral and still move like its in first gear.\

so while driving my father in laws truck on the high way i had it on overdrive it was running fine until i heard a loud noise and it felt like something had fallen out from under the truck i had ...
3
votes
1answer
42 views

Tire chains appear to touch suspension components?

Years ago I bought some chains for my truck (2005 Tacoma 4x4) just in case I'd ever need them. I have tires sized 265/65-17 and I have confirmed that these chains are intended to fit that size tire. ...
21
votes
4answers
4k views

What are these loops in the brake line for?

I was watching a show on the Velocity network about truck modifications, and I saw the following closeup of the trucks master cylinder and booster. What I don't know is why the designers put the ...
1
vote
0answers
44 views

Big clunk/thunk when stopping fully

This problem started about a month ago. Just got back from traveling for the holidays and have to resolve this problem ASAP. Sometimes, but not always, the truck will clunk or thud hard when going ...
2
votes
0answers
2k views

Starter motor spins but engine does not crank

I have an intermittent starter problem on my 95 Chevy K1500 pickup truck. When I turn the ignition, I hear the starter motor spinning but the engine does not turn over. If I put the truck in gear ...
2
votes
2answers
2k views

Why Don't Medium Duty and Heavy Duty Trucks require Airbags?

Why Don't Medium Duty and Heavy Duty Trucks require Airbags? According to GSO 42 regulation, Passenger Cars, MPV, Trucks or Buses with GVW less than 3500Kg requires an airbag, while for MDT & HDT ...
1
vote
0answers
33 views

2010 toyota tacoma AC not working

Blower motor is brand new, tried a replacement just in case and it still did not work. I've got a new diffuser on the wire harness. Lights come on for the ac when I turn the knob on the dash, but the ...
1
vote
0answers
29 views

Trucks fuel economy dependence on weather

I am searching scientific data and studies on the link between weather and fuel consumption in HDV (heavy duty trucks). For now I have found almost nothing. Can anyone help?
8
votes
3answers
20k views

Why do trucks have a plastic flap under the front bumper?

I've noticed today's trucks have this 3-4" plastic guard that runs along the bottom of the front bumper. It strikes me as something that would hinder ground clearance or otherwise brush into things. ...
4
votes
5answers
84k views

Random Cylinder Misfire in Cylinders 2, 5, 6, and 8; P0300; Chevy Silverado 1500 4WD

Yesterday on the way to work my 2000 Chevrolet Silverado 1500 4WD with the 4.8L V8 Vortec engine started flashing a check engine light. I read it and it was a P0300 Random/Multiple Misfire. I had ...
2
votes
2answers
225 views

What is a through-drive axle? and what is an interaxle differential?

While reading the 'Mercedes Truck Front Axle Systems' (https://www.mercedes-benz.com/en/mercedes-benz/vehicles/aggregates/powertrain-trucks-front-axle-systems/) I was confused as to what a 'through-...
0
votes
2answers
107 views

Chains hanging from rear axle of trucks

I often see trucks (school buses, ambulances, sometimes dump trucks) which have metal chains hanging off the rear axle, on either side of the differential. What are these for?
0
votes
2answers
2k views

How to find ignition wire on mercedes truck

Hi all I need to find ignition wire as I need to connect t to my ower supply. This should be behind the key lock right? How do I approach to it and how to know which one is right wire? Truck s ...
2
votes
2answers
375 views

Is this a headlamp housing or a headlight bracket?

I have a 2015 Ram 1500 Crew Cab Sport 4WD. Something on or near the driver side headlamp is broken: The dealership is quoting me $600 to fix this broken piece of plastic, so I want to search ...
1
vote
1answer
764 views

AC Compressor runs for 45 mins and shuts off

This is on a 1997 Chevy C2500 with a 5.7L. It has a new AC compressor, AC condenser, AC Manifold hoses (suction and discharge). After an evacuate and recharge, the AC blows ice cold for about 45 mins (...
2
votes
0answers
54 views

What’s causing my truck to jerk and rpms to go up and gown

Okay so I have a 1996 Chevy 1500 pickup. When I’m going down the highway and get to 45mph or so my rpm will start to jump up and down and the truck starts to jerk. My speedometer also will drop and go ...
0
votes
0answers
67 views

Truck's exhaust temperature: how to read EGT sensor by ODB / FMS / Can-bus?

I succesfully decoded can-bus data from a VW Caddy, but know nothing about OBD and trucks. For a research I need now to read a truck's exhaust temperature (EGT sensor), possibly by OBD. I would ...
3
votes
4answers
12k views

Slow acceleration, high fuel consumption after spark plug change

I have a 2000 Ford Ranger 4.0 L V6 4x4 model. I recently was having some problems with the truck idling too low when cold and I decided to change the spark plugs. I put in 4 out of the 6 new plugs and ...
2
votes
2answers
434 views

What causes rear axle shaft breakages in heavily loaded trucks on uphill shifts?

Where I come from the ISUZU FSR 33H is the preferred truck for transporting heavy construction materials. The truck is capable of hauling loads in the order of 6 to 7 tonnes. However I cannot help but ...
1
vote
0answers
55 views

faint white smoke, burning smell and poor acceleration

I have a 1998 V8 5.7 Chevy Silverado C1500 RWD, my problem is I did have a small wreck in this truck and have been replacing parts on it, I hit a ditch and the right front tire hit a metal culvert ...
1
vote
0answers
29 views

Plow Truck was working great but after 20 minutes it began to smoke, stalled and now will crank but will not start [duplicate]

My plow truck is a 4.3 1991 Blazer, it was working great but after 20 minutes or so it began to smoke, then stalled out and now it will crank but will not start. The oil, transmission (auto) fluid, ...
2
votes
1answer
160 views

Why did the Tesla truck have a centre mounted steering wheel? Are there any advantages to such a system?

I asked this question on a trucking forum and the general consensus was that it would make backing up much harder. Does it eliminate any sort of blind spots?
1
vote
1answer
61 views

How widesread are truck ALS systems today?

Talking specifically about such non-exotic vehicles as long distance semi-trucks, city buses etc., what is the today's de-facto standard with regard to availability of Automatic Lubrication Systems on ...
3
votes
2answers
321 views

24V truck charging circuit problem

I want to diagnose a faulty charging system in a European coach bus ('99 Neoplan). It has 2x 12V batteries in series and also two alternators. With the engine running I measure ~21V across the end ...
2
votes
0answers
100 views

Why does Actors truck has oil in the radiator?

Actros V6 engine. There is engine oil in the radiator, but no water in engine oil. I have replaced the oil cooler, but the oil is there again. Then I changed the head gaskets and check the head, but ...
4
votes
2answers
2k views

What do I make a custom box truck body out of?

I'm working on a box vehicle conversion project, and I need to replace the main body. It looks like the original method was steel frame, plywood on top of that, and large sheets of galvanized steel ...
2
votes
2answers
999 views

Truck Cap Lighting and Wiring - Can I splice two ground wires together, connect to one ground?

I have a new truck bed cap. I need to wire the cap's dome light and third brake light. As such, the cap has four wires (supply to dome, ground from dome, supply to brake light, ground from brake light)...
1
vote
0answers
66 views

Truck fleet monitoring project

I need to design a truck fleet monitoring system and make a prototype of it during my traineeship this year. I've been looking into the different buse networks that are already implemented in trucks ...
6
votes
2answers
9k views

Scania clutch issue with syncromesh gearbox

The clutch of our 124 Scania stopped working properly with the "14 speed" syncromesh gearbox. The first time it happened, it ground instead of smoothly going into reverse (a non-syncro gear), to back ...
0
votes
1answer
30 views

2005 ford sportrac

Overheated and found that I had no coolant. Engine cool filled radiator and reservior to Max line with water. It has been insanely hot in California I might add. Drove home 90 miles and next day drove ...
1
vote
0answers
360 views

What limits the max power rating of a V belt drive?

We know that belt drives are limited in their max possible power rating and most high power/torque applications(trucks) use gear drives. I wanted to know the main factor that limits the power/torque ...
0
votes
1answer
2k views

Difference between Trophy Truck and Hammer Truck?

I just saw the video: https://youtu.be/i85ya5wpTzA In Baja 1000, of the many vehicles competing, there are two which interested me, mainly Trophy Truck and Hammer Truck ... What is the difference ...
4
votes
2answers
5k views

Occasional Vibration at specific highway speeds.

Symptom: At certain speeds (70 mph, 40 mph, etc.) there is a noticeable vibration. Vehicle: 1998 GMC Sonoma (2 wheel drive) The vehicle was purchased used and had similar symptoms at the time. ...
4
votes
1answer
105 views

Changed brake pads and bled the system, but brakes go mushy when engine is running

2007 Ford F150 4x4 After changing the brake pads and front rotors, bleeding was done and the brakes felt great. While the vehicle was still on the jack stands, I started the engine and now the ...
0
votes
1answer
50 views

Which 4 wheel drive to use to pull boat out of harbor? [closed]

I didn't see this asked so thought why not since I'm stuck on which to use. When pulling a 15ft or more boat out of the harbor while your truck is on the ramp partially in the water and connected to ...
1
vote
1answer
108 views

Where to attach ball hitch on 1989 10ft former U-Haul truck?

I have a 1989 Toyota 10 ft box truck that was a U-haul in a former life. I would like to attach a 2 inch ball hitch to the rear. Problem is, this is a low step loading configuration where there ...
1
vote
1answer
86 views

what does B/G mean in trucking?

In a truck driving license guide there are some terms that I don't understand. They are : Power steering B / G Water pump B / G Alternator B / G Air compressor B / G I know what Water pump,...