Is there a problem with my Cat 3126 engine?

Thanks Ed 3126 Cat engine have a 3126 cat engine that will start but only run for a few seconds then check engine light comes on and it dies it is in a 99 gmc 6500 topkick have replaced the heui pump, speed control sensor, cam sensor, fuel filters, oil filters, need to get running asap costing me money

What is Code 39 on IAC cat 3126?

The IAC will flash a code 39 with the cruise, but show up as a 164-11 on the scanner. The cruse flashes will point us in the right direction while troubleshooting,and has helped me and my cat distributor repair my problems over the phone, but it is not the see all the scanner is.

How is a headlight connected to a caterpillar ECM?

With the OEM connector disconnected at the ECM, jump power one at a time from pin 4 and 6, through a headlight bulb, then ground the headlight to make it come it on. If the wires are in good shape, that headlight will be nice and bright. If the wiring is weak with a bad spot, the headlight will be dim.

Do you need to test a caterpillar ECM?

For sure, any corrosion needs to be cleaned up or replace those pins. Also, it is best to have the proper test pins, that way you can see if any pins inside the connector body are spread and making poor contact. I would also try a test ECM for a few days if you can before spending any money on a new one.

What kind of injection does a cat 3126 use?

It is an awesome running truck, he changes his own fluids and has never had any down time with it. The 3126 is a slightly larger version of the 3116 (6.6L vs. 7.2L). All the 3116’s that I have ever seen had mechanical injection, most of the 3126’s are the E model, which use HEUI injection.

Is the cat 3126 engine a good engine?

That system is very similar to what’s on the 7.3L Powerstroke. They are both pretty reliable and make good power (up to 330 h.p.).

Is there any warranty on Cat 3126 cranks?

The diagrams I have seen don’t look exactly like my configuration. No warranty! Any thoughts?

How much does a 2004 Caterpillar 3126 engine cost?

2004 CAT 3126 Diesel Engine Take Out, 190HP. Good For Rebuild Only. $1,995.00 For Information on this or any other engines. Please Call . “NO CORE RETURN REQUIRED”

How can I test my caterpillar ECM wiring?

ECMs are pretty tough. Problems like yours are wiring related 99.99% of the time. Another test you can do is to load test those power and ground wires. With the OEM connector disconnected at the ECM, jump power one at a time from pin 4 and 6, through a headlight bulb, then ground the headlight to make it come it on.

What kind of truck has a cat 3126 engine?

Im not a ford or International fan so im looking at what ive always loved , GM trucks speciifically the 1990-2002 Kodiak/topkick trucks like the 6500 series. Have found a few late 90’s/early 2000’s trucks that have 25,ooo # gvwr.

Can a Caterpillar 3126 engine have an oil leak?

It’s important to keep the valves adjusted in them, and the 3126E’s tend to have oil leaks in the cylinder head from time to time (coming from the high pressure system that operates the injectors) but it’s usually a very easy fix (O-rings or the pressure sensor). Caterpillar parts are a little expensive! these trucks all have autos behind them too.

What kind of power does a Ford 3126E have?

They are both pretty reliable and make good power (up to 330 h.p.). It’s important to keep the valves adjusted in them, and the 3126E’s tend to have oil leaks in the cylinder head from time to time (coming from the high pressure system that operates the injectors) but it’s usually a very easy fix (O-rings or the pressure sensor).

What happens when you hit the brakes on a 2001 cat 3126B?

My 2001 3126B shuts down when I hit the brakes hard. It has done this at 35 MPH and at a coast in the shop. Feels like an electrical/electronic shutdown as it is instantaneous. Does not loose power it just shuts down. Starts right back up and runs fine but don’t give it a hard brake because it will shutdown.

How do you troubleshoot a cat engine in a truck?

Start your troubleshooting by grabbing the CAT engine book that came with it. Then use the cruise control switches in the truck to read the codes using the check engine light.

The diagrams I have seen don’t look exactly like my configuration. No warranty! Any thoughts?

What’s the problem with the cat 3126 engine?

Heres the problem….

Where is the manual stop button on a cat 3126?

The red button on the right side of the cylinder is the manual stop, btw. Here’s how it looks like on the 3116. I guess it’s neither much different nor far from that placement also in the 3126, but I can’t be positive about that.

Where is the fuel pressure gauge on a cat 3126?

It should read 60 psi after briefly cranking the engine.If you get 60 PSI QUIT CRANKING. – the fuel pressure regulator is on the rear of the head. If the fuel pump is working, test by putting a gauge into the port on the fuel filter base.

Is the caterpillar 3126cat used for Fire Rescue?

Someone correct me if im wrong but i read where the 3126Cat @ 330 h.p. is mainly for fire/rescue & ambulance use only . Thanks guys! That is the information I was looking for.

Why did my cat 3126 not start up?

The next 3126 did not have the steel oil line to the injector.And also check the return fuel fitting in the rear of the head for metal in it.I have seen metal in them when the engine ran out of fuel and I guess if it was restricted it would not bleed the fuel system. Click to expand…

What kind of engine does a cat 3126 have?

I have a 3126 in a 2004 Ford that was running fine when I parked it. Tried to start it after is sat for a couple of weeks. The engine cranks like it should but makes no signs of starting.

How to count the flashes on Cat 3126?

Count the flashes, they will be two digit numbers, eg. 6 flashes then a pause then 3 flashes would be code 63. there may be several codes, it will flash them all one after another. You usually need to go through this process several times to make sure your getting the codes correct.

What kind of engine does a Chevrolet C8500 have?

2006 Chevrolet C8500 — Tandem Axle, C7 Caterpillar 250 HP, Allison Automatic 6 Speed, 13,200 Front Axle, 40,000 Rear Axle, 273″ Wheelbase, 25′ Bridge, Hendrickson WALKING BEAM, Air Brake, Exhaust… See More Details

When to replace cam sensor on Cat 3126?

Cat 3126. Discussion in ‘ Trucks ‘ started by John White, May 22, 2014 . Just replace cam sensor on cat 3126. I don’t have a scanner to remove fault code.

Are there any Chevy Kodiak C8500 trucks for sale?

Heres one you’ve been waiting for… a RUST FREE PRE EMISSION Tandem Chevrolet with a DURAMAX 7.8 Diesel and an ALLISON RDS Automatic transmission with a PTO GEAR !!! ALL of this and a HENDRICKSON See More Details AUTOMATIC TRANS…BARN GATE….Very Nice Truck, been fully serviced and ran through our shop!!

What kind of truck is a Chevy C8500?

1999 Cheverolet C8500 Dump truck, 84,698 miles, Cat 3126 330Hp, Hendrickson spring suspension, 13ft dump, Tire wear %80 / Brake wear %80, 22.5 inch w… 2006 CHEVROLET, KODIAK C8500, Heavy Duty Trucks – Flatbed Trucks, Caterpillar C-7, Manual, 2006 Chevrolet C8500 24′ x 96″ Flatbed with Moffett Hookup,…

Where can I buy a GMC C8500 dump truck?

Sold By: TRUCK CITY SALES, INC. [37600 GVW] 2008 GMC C8500 w/ 12.5 Aluminum Dump Body, 51,279 Miles on Isuzu 7.8L L6 Engine w/ Allison Automatic Tranny, Galion – Godwin Model #PLD55-12.5 Bed 12.5ft L x 7ft W x 2ft H, Pioneer Elec… See More Details

Is the GMC C8500 a pump hoist truck?

This 1992 Smeal R12 Pump Hoist Rig is powered by a Reman CAT 3126 Diesel Engine and mounted on a 1999 GMC C8500. This rig has VERY LOW miles since the engine was re-manufactured. Repainted July 201… See More Details Municipality owned. FRESH PAINT! low miles. perfect condition great value at 69,500

What kind of oil does a cat 3126 take?

By the way my engine in Serial# HEP 280486. I tapped into the high pressure oil galley and put a 4000 psi gage in. Had a helper crank the engine while I watched. The pressure started up kind of slow and then quickly headed toward max on the gage.

Why does my cat 3126 engine not shut off?

3126 engines don’t have a shutoff solenoid, it is all controled by the ECM. Most likely the speed sensors not sending signal, HEUI IAP valve, or even the HEUI pump itself. Longshot might be ECM. Unless you have an active code, the cruise flash codes won’t show anything.

What are the codes on a cat 3126?

Our Cat distributor used to ask what codes were flashing via the check engine light, but have since given me a pocket tec to use. Pages 58 thru 66 in the C7 operation manual (only one handy and identical to 3126E manual), list the procedure for retrieving the codes using the cruise control switches, what the codes are, and the consequences.

Can a cat 3126 go over 35 mph?

I have a Cat 3126 (2002 model ) in a Discovery Motorhome on a Freightliner frame, Its been sitting for a few years, It has gone in to the power down mode ( I Believe ) it will not go over 35-40 mph. I have new oil and oil filter, 1 new few fuel filter, ( remote fuel/water separator at rear of chassie ) can not find a second fuel filter.

Start your troubleshooting by grabbing the CAT engine book that came with it. Then use the cruise control switches in the truck to read the codes using the check engine light.

What are the symptoms of a bad intake air temperature sensor?

In this article, you will learn the symptoms and the meanings of a bad intake air temperature sensor. Let’s begin with the symptoms. 1. Drop in Acceleration 2. Hard Cold Start Condition 3. EGR Valve Affected 4. Poor Fuel Economy What is an Intake Air Temperature Sensor? Where Is the IAT Sensor Located?

Why does my car not start when it’s cold?

Bad Injectors: A bad injector can throw the entire fuel system off and keep the engine from firing, especially when the engine is warm. Faulty Cold Start Valve: A failed cold start valve will keep your car from starting when the engine is cold.

Why does my 3126 cats air intake not come on?

My 3126 cats air intake… My 3126 cats air intake heater does not come on, the wait to start light comes on for 1 to two seconds and then goes out. The solinoid has been tested and does work, when the solinoid is unlugged the wait to start light will come on for about 30 seconds and go out.

Why does my air intake heater not come on?

My 3126 cats air intake heater does not come on, the wait to start light comes on for 1 to two seconds and then goes out. The solinoid has been tested and does work, when the solinoid is unlugged the wait to start light will come on for about 30 seconds and go out.

When does the air intake light come on?

Air intake..light comes on for 1 to two seconds..solinoid… My 3126 cats air intake… My 3126 cats air intake heater does not come on, the wait to start light comes on for 1 to two seconds and then goes out.

How much does a Caterpillar CAT 3116 engine cost?

It is extremely hard to time the fuel system and like the VW on the automotive side, working on the CAT 3116 requires special tooling you can only buy from Caterpillar. Typically, it costs up to $5000 in tooling to work on the 3116.

Is it possible to increase horsepower to 3126?

The system I use can be adjusted for more or less horsepower, and the extra mileage would be a bonus I would think on a company vehicle. It is really not radical power, but a very big and noticable increase for less than $1000.

When did the Caterpillar 3126 diesel engine come out?

Engine 3126 Caterpillar WebPage. The Caterpillar 3126 is a turbocharged 7.2L inline 6-cylinder diesel engine manufactured by Caterpillar and first introduced in 1997; it was the first electronic mid-range diesel engine that Caterpillar produced.

Why does the cat 3126 have a bad rap?

Why does the CAT 3126 have a bad rap? The 3126 is based on an earlier engine (3116), it appears that earlier engine had some bad problems and this started it out on a bad foot.

How does the HEUI work on a Caterpillar 3126 engine?

A HEUI injection system (also found on Ford Power Strokes, as well as other engines) uses a second oil pump to boost oil pressures to 1500+ PSI (I don’t know the maximum) and essentially use the high pressure oil as hydraulic fluid. And the computer would control the high pressure oil which then controlled the injectors.

What’s the highest hp a cat 3126 can get?

The highest HP rating for the 3126 engine is 330 HP. It would be possible to have the HP increased from 300 to 330 but you would have to add an atmospheric pressure sensor.

When to use a Kat’s engine block heater?

A Kat’s engine block heater is a highly advantageous device to use in cold weather to make sure your engine starts. They are usually installed into a freeze plug port on the engine block. They make starting faster and easier in cold weather. They provide heat to the cabin much faster.

Where is the heater on a Caterpillar 3116?

My Caterpillar 3116 (the predecessor to the 3126) came with a Caterpillar block heater. It is located in the water jacket/side of block just below the turbo. The element went out, so I just replaced it.

Where is the block heater on a cat 3126?

It is located in the water jacket/side of block just below the turbo. The element went out, so I just replaced it. Note, this is one of the two locations for a block heater on the 3126, per Hotstart’s website. I got a Hotstart FP101-001 http://www.hotstart.com/home/products/in-block-heaters/. It replaces the freeze plug/old block heater.

Why does my 3126 cats air intake heater not come on?

1998 3126 330hp cat cranks over but will not start. The engin warning light comes on, but the preheater light does not. It always did before this.I had … read more

Is the cat 3126B block warming engine bypass?

Brett, with heated engine coolant to about 170 to 180 degrees, I presume the 190 degree CAT thermostats won’t fully open. Will that make a difference as far as circulating hot coolant around the engine? Does the 3126B have a thermostat bypass like most automotive engines?

2004 CAT 3126 Diesel Engine Take Out, 190HP. Good For Rebuild Only. $1,995.00 For Information on this or any other engines. Please Call . “NO CORE RETURN REQUIRED”

Why does cat 3126 B won’t start?

Really need to check the HEUI oil pressure while cranking, if it has an internal oil leak or a worn HEUI pump it wont get enough oil pressure to fire the injectors when cranking. rpsunrise Thanks this. I ran the codes as Jas suggested and came up with 87 and 34 in that order.

Where does the oil go in a cat 3126 engine?

Cliff note version; engine oil is pressurized to around 3000 psi and sent to the fuel injectors (via HEUI pump) it uses that high pressure oil to push a piston inside the fuel injector (oil on top, fuel on bottom of piston) to atomize the fuel, the injectors are controlled by a solenoid on top of each.

Why does the cat 3126 have one solenoid?

The CAT design only has one solenoid where the Later Navistar design in the video has two. engine oil consumption via leaking piston sealing inside injectors. low power, oil breaks down and cannot be pressurized any more or is aerated. injector o-ring failure, causing cross contamation of fuel and oil, usually oil ends up in the fuel tank.

What does group diagnostic code cat 3126 tell you?

If any of the of group diagnostic code share active 232-03 5 volt supply above normal and 232-4 5 volt supply below normal. What this is telling problem is a wiring or pin terminal problem. Do not replace the sensor or ECM. Note: if the sensor has an integral connector the pin Connector cannot be removed.

What kind of engine does a cat 3116 have?

I used to own a 3116 powered boat. Not exactly the same engine, but yours were derived from the 3116, sort of. I did experience an unwanted engine shut down, only once during 17 years of ownership overall.

Is there a problem with my Cat 3126 engine?