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Why is my Cummins 400 ISL engine overheating?

Why is my Cummins 400 ISL engine overheating?

The common denominators are Freightliner chassis – 400 ISL – Side Radiator. I had a 2004 Allegro Bus that had similar issues. The root problem is that Freightliner uses a 1,050 sq in radiator in those years.

What’s the fan coming on on a Cummins 400?

NO OBSTRUCTION INFRONT OR BEHIND RADIATOR, ANTI FREEZE DOWN TO -35 NEW AIR FILTER. FAN IS COMING ON AT ABOUT 195. ON FLAT GROUND RUNS FROM 199 TO 204

What should I do about my Cummins BC 4 400 flow recon engine?

This is what has been done so far This is a Cummins BC 4 400 lo flow Recon engine with about 30,000 miles so far we have replace radiator with a 4 row dimpled tube core, water pump , both themostats and the POS is still getting hot any help will be appreciated .Tony :sick::angry::crazy:

What should the temp be on a Cummins 400?

It was typical of the temp gauge going to 220 degrees and my MMDC’s LCD display would flash the high temperature warning and sound the alarm. But, 220 degrees isn’t the danger point. It’s a warning that you are getting there soon though. What I then did was manually downshift the Allison to keep the revs up.

The common denominators are Freightliner chassis – 400 ISL – Side Radiator. I had a 2004 Allegro Bus that had similar issues. The root problem is that Freightliner uses a 1,050 sq in radiator in those years.

NO OBSTRUCTION INFRONT OR BEHIND RADIATOR, ANTI FREEZE DOWN TO -35 NEW AIR FILTER. FAN IS COMING ON AT ABOUT 195. ON FLAT GROUND RUNS FROM 199 TO 204

This is what has been done so far This is a Cummins BC 4 400 lo flow Recon engine with about 30,000 miles so far we have replace radiator with a 4 row dimpled tube core, water pump , both themostats and the POS is still getting hot any help will be appreciated .Tony :sick::angry::crazy:

It was typical of the temp gauge going to 220 degrees and my MMDC’s LCD display would flash the high temperature warning and sound the alarm. But, 220 degrees isn’t the danger point. It’s a warning that you are getting there soon though. What I then did was manually downshift the Allison to keep the revs up.

What’s the operating temp on a Cummins ISL?

Cummins says that 212 is ok operating temp for the ISL engine. What you are probably seeing is the fan controller switching to max speed, which cools the radiator quickly. Guys, thanks for your help.

Do you need a Cummins license to use Insite?

Some Cummins software and mobile applications – including INSITE™, Guidanz®, PowerSpec and QuickCheck – require unique software licenses for use. Licenses are available through a Cummins-authorized distributor or dealer.

Where is the fuel hose on a Cummins 400?

Cummins changed the design in 2006 to where the hose coming right off the block is right next to the Turbo. They welded a piece of pipe coming off the engine block to re-route the hose and I have now had no more problems. Additionally, FYI, another Cummins campaign item is the fuel hose to the fuel rail on the pressure side.

How big is the side radiator on a 400 ISL?

Our 400 ISL runs between 173 and 183 except on the hottest days and steepest long grades. I’ve never seen it above 200 either on the analog or digital gauge. We have the side radiator which I measure to be about 1100 square inches. Our charge air cooler and transmission cooler are all nested.

How big is the radiator on a Freightliner?

With the new 2007 spec (ULSD) engines, Freightliner has now gone to a 1,200 sq in radiator. Freightliner’s cooling woes seemed to appear with the first emissions steps in 2003 so chassis in the 2003 to 2007 model years can have these issues.

How many horsepower does a Cummins ntc400 have?

USED CUMMINS NTC400 ENGINE, JAKE BRAKE, CPL:1211, 1.990 TRUCK, COMPLETE, INSPECTED AND TESTED RUNNING ENGINE, ALSO MANY ENGINES IN STOCK. USED NTC400 CUMMINS BIG CAM 3 ENGINE, CPL:1185, 1.988 TRUCK, COMPLETE, INSPECTED AND TESTED RUNNING ENGINE, 400 HP, ALSO MANY ENGINES IN STOCK.

With the new 2007 spec (ULSD) engines, Freightliner has now gone to a 1,200 sq in radiator. Freightliner’s cooling woes seemed to appear with the first emissions steps in 2003 so chassis in the 2003 to 2007 model years can have these issues.

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Ruth Doyle