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Questions tagged [engine-load]

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Is it more fuel efficient to transport gear in a low or high efficiency vehicle?

Let's say I have two vehicles that are driving to the same destination from the same origin with the same driving style along the way. One is a larger SUV vehicle and the other is a smaller more ...
vanhooser's user avatar
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9 votes
2 answers
2k views

Is high engine load bad?

I drive a 4-speed automatic with a 1.1L 70 HP engine. Naturally, I very frequently find myself in situations where pressing the gas pedal deeper doesn't increase acceleration (i.e. maximum engine load)...
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I have a 1999 Suzuki marauder and need codes

How do I pull service codes from my 1999 Suzuki marauder v800?
Brian Curless's user avatar
1 vote
1 answer
385 views

Broken welded nut inside frame for motor mount

I was trying to replace the passenger side torque mount on my 98 civic and both nuts that are welded inside the frame snapped off. Now the bolts and nuts just spin. I’ve read similar posts from people ...
user58423's user avatar
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1 answer
144 views

Is it true that crankshaft counterweights help with extending the life of the main bearings?

I have heard that use of counterweights in crankshafts also help with bearing life because "counterweights reduce peak main bearing inertia loads". Is this true? If its true how does that ...
Timothy Scherer's user avatar
1 vote
1 answer
462 views

Accidental brief full throttle on start - any concerns?

I've got a 6 Cylinder N/A BMW (N52 - 3.0) engine with 65,000 miles, that has been fully maintained (last oil change was a few weeks ago). It had been sat for about 10 days, when I got in, started it, ...
maxp's user avatar
  • 113
0 votes
1 answer
224 views

Where to look first for "rhythmic" vibration under load

This is in an older Dodge B250 Van, with the Chrysler 318/5.2L v8 engine, not fuel injected. On a recent long drive, I began to notice the van has what I can only describe as a "rhythmic" ...
Cameron Roberts's user avatar
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34 views

Renault Megane 1.9 dci 2002 it make loud noice above 40km/h

So car was on a small service and i pick up the car 2 days later from my sister she say the engine dont make any wierd noice. Then i drive it for about 30min and i realise the right side on the engine ...
Miloš's user avatar
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1 vote
1 answer
435 views

Engine locked while driving

Hi I have a volvo 440 d13 motor. Driver could not get the truck started but dashboard displayed that it was in neutral and no faults appeared. A mechanic went to site and said that the truck was stuck ...
Rajesh's user avatar
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0 answers
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Manual calculation of engine load [duplicate]

Calculated engine load (PID $04) is determined (according to SAE J1979) by equation: LOAD_PCT = [current airflow] / [(peak airflow at WOT@STP as a function of rpm) * (BARO/29.92) * SQRT(298/(AAT+...
Rafal's user avatar
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1 vote
0 answers
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Car shutting down on its own while driving

My car is Santro xing (2003 , 1 lakh+ distance). Recently i am facing a problem that it is shutting down on its own while driving. Any specific reason?
Rishabh Dev Upadhyay's user avatar
3 votes
2 answers
3k views

Is driving at 3000RPM the same for the car, whether you are in first or fifth gear?

So I was wondering, when taking the car on a straight in 5th gear at 3000RPM (~108km/h) or in first gear at 3000RPM (low speed), what are the differences experienced by the engine ? Apart from ...
P1kachu's user avatar
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1 answer
556 views

Vehicle alternator voltage/current output's relation with throttle / engine load

I was diagnosing my alternator to find out if it is working properly. It seems like it is doing its job well. Anyway, interesting thing I found out was that the average voltage output from alternator ...
Pudi's user avatar
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1 vote
0 answers
325 views

Suzuki Liana 2003, Sounds very loud in engine and won't increase rpm?

I got a Suzuki Liana 2003 1,6 5D that has gone 145000 Km. The engine oil was changed at 140000 km. Air filter cleaned according to instruction since it was new. Oxygen sensor new and working properly (...
Payam30's user avatar
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1 vote
2 answers
7k views

How long does it take to build oil pressure

Run a modern car (2010+ model) until all parts, oil and coolant has fully reached operating temperature. After driving for some time, shut it down at the gas station and leave it off while refueling (...
Erik's user avatar
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1 vote
1 answer
13k views

Can driving in drive 2 damage my car

Not going to over inform here, suffice it to say that my 1997 Jeep Wrangler engine begins to choke and cut off at stops. Many ideas and repairs tried. I recently found that driving in (Automatic) ...
OBI_Wrangler's user avatar
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1 answer
183 views

Conflicting statements RE Towing Capacity in Owner's Manual - How much can I tow?

I have a 2007 Chrysler PT Cruiser. In the owners manual, available here, on page 330 there's a table displaying the maximum towing amounts for the engine sizes available. For each, this is listed as ...
schizoid04's user avatar
2 votes
0 answers
1k views

Reverse on Auto transmission isn't engaging properly after extensive engine braking

First post onto this forum. We have a 2012 Hyundai SantaFe with a 3.6 Super charged petrol engine. Recently we spent some time visiting the local mountains, and I needed to use the auto box in a low ...
DaveM's user avatar
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1 vote
0 answers
1k views

Calculate Intake Manifold Absolute Pressure from MAF Engine using OBD Data

I need to calculate Intake Manifold Absolute Pressure from OBD Data. I have Toyota Corolla GLI 2010 Model. This car has MAF engine which does not return Intake Manifold Absolute Pressure. Where'as I ...
Zeeshan Shakil's user avatar
5 votes
2 answers
799 views

Pivoted curved-path piston engine

Years ago, I saw a documentary about engine efficiency where people were testing a pivoted, curved-path piston engine. The claim is that the standard piston engine, with straight up-and-down path, ...
fernacolo's user avatar
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1 vote
0 answers
149 views

6 YO Honda CB Twister 100 cc bike delivers rough (struggles to keep pulling) power output post 40-50 kmph

It's just that the engine struggles to put out more power, with a lot of roughness in the engine sound post 50 kmph - What might be the problem? The recommended engine oil is 10w30 for this, but i've ...
Jayanth Kumar's user avatar
-1 votes
1 answer
2k views

Driving car with half engaged clutch

Say I am driving my car (Hyundai i10) at 2nd gear. My clutch is engaged. As I increase my throttle position, rpm will increase and so will speed of the car till a point when the speed wont increase ...
Soumya Sen's user avatar
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2 votes
0 answers
231 views

Calculated vs absolute engine load [duplicate]

The OBD-II protocol (SAE J1979) has a couple of PID's that relate to engine load: +------+-----+---------------------------------+ | Mode | PID | Description | +------+-----+------...
Zaid's user avatar
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2 votes
1 answer
1k views

Determining active gear from OBD2 for Ford Fiesta

I am trying to to write an app which advises the driver to change gears and do some other driving quality assessments. For this purpose I need to determine the RPM and currently active gear in a ...
Mohammed Lokhandwala's user avatar
3 votes
4 answers
444 views

What would be better for an engine driving at 60mph or 70mph? I wish to get the most miles out of my engine?

At 60mph my engine revs at 2800RPM and at 70 it's 3200RPM. My qustion is which condition would give the most miles from my engine.
ceefax12's user avatar
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5 votes
4 answers
8k views

Can 100% calculated load be reached in neutral?

While searching for information about how is engine load calculated I came across this question which contains an equation for the ECU load calculations. As I understand it under fixed atmospheric ...
I have no idea what I'm doing's user avatar
1 vote
2 answers
147 views

Diesel Engine Power

Let's say we have a 6 cylinder diesel engine having 385 KW power. Now I am running this engine at high idle of 1900 rpm. What will be power produced by this engine? Is it equal to max power or less ...
DDiesel's user avatar
  • 19
20 votes
2 answers
83k views

How is engine load determined?

I'm struggling to find information on how engine load is defined. Is it really just a fancy word for torque demand? There are three parts to this question: Is there a theoretical equation that is ...
Zaid's user avatar
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