Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
Too much air pressure on turbo. 2007 international 9900i is
Too much air pressure on turbo JA: What's the make/model/year of your truck? Engine type? Customer: 2007 international 9900i is engine JA: Are you fixing your truck yourself? What have you tried so fa… read more
Scott Anthony
Scott Anthony
Master Technician
HS Diploma
2 satisfied customers
C15 cat, boost sensor was replaced at cat dealership and
C15 cat, boost sensor was replaced at cat dealership and truck had 60 pounds of boost the day I picked it up, drove home cut truck off and the next day it wouldn?t get over 30 psi, every once in a whi… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
No boost pressure. 1996 international T444e. 30 psi fuel
30 psi fuel pressure clean out tank and screens and fuel filter came up to 45, but when put under a load drops to 30 psi … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
418 satisfied customers
2004 cat acert c15 Diesel engine over heats only when boost
2004 cat acert c15 Diesel engine over heats only when boost pressure reaches over 30 psi with light loads and 17 psi with heavy loads. No coolant loss or oil. Compression is good on all cylinders. Wil… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
Cat Man. I currently have a 2007 Pete 379 with a NXS acert.
Hi Cat Man. I currently have a 2007 Pete 379 with a NXS acert. It is a factory 475/1850 tune but last weekend I changed it to the 550/1850 brake saver tune and when I went out on the road I could tell… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
I have t600 with acert engine. During a hard pull especially
I have t600 with acert engine. During a hard pull especially under heavy loads or cold days, it will stumble or puff for 2 or 3 seconds and then it's okay. This random, it doesn't do all the times. It… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
I have a C-7 in a dyno, at !00% throttle & load around 320
I have a C-7 in a dyno, at !00% throttle & load around 320 hp. while monitoring boost pressure I noticed that the readingbounces around very rapidly 21-29 psi, … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
What is normal boost for a SDP engine? I've spoken to quite
What is normal boost for a SDP engine?I've spoken to quite a few self proclaimed "cat guys" and cannot get the same answer twice.I am boosting 38-42 max. Usually right at the 38psi mark.I've had a few… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
Cat Man, 6NZ47912 set at 550/1850 what boost psi should it
Cat Man, 6NZ47912 set at 550/1850 what boost psi should it be running under load? what is the max safe boost psi for this engine at this setting?… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
I'm working on a cat C7 Acert in a coach, when its pulling a
I'm working on a cat C7 Acert in a coach, when its pulling a hill the low boost code alarms, ive replaced the map/ boost sensor, its not constant and it will go away if they let out of the throttle on… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
My 6NZ c-15 has an issue but only when the engine is warmed
my 6NZ c-15 has an issue but only when the engine is warmed up and loaded heavy. when upshifting on a grade it will hesitate with low boost for a few seconds and then kick in and pull normally. no smo… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
Can I change my c15 Ecm that is 1550 torque and 435 horse
Can I change my c15 Ecm that is 1550 torque and 435 horse with one rated at 1850 torque and 550 horse… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
I have a W900L with a C15 ACERT (bxs) that has been set to
I have a W900L with a C15 ACERT (bxs) that has been set to 550 HP by CAT. Whenever I engage the clutch from a stop the engine lugs hard like I'm overloaded. Occasionally if I'm not careful it will sta… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
. Just rolled 1.1 million miles on my 475 hp acert in
Hello. Just rolled 1.1 million miles on my 475 hp acert in an 05 pete 379. I bought it at 570k miles from my dads rigging company in CA. It has been a VERY reliable engine for me. I have several ???s … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
2000 frieghtliner Classic I am losing boost pressure it was
2000 frieghtliner Classic I am losing boost pressure it was getting 28 psi now 18 @ 2100 rpms starts late and drops off early under load truck does not smoke,does not shudder new fuel lines from the d… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
I install a cat C15 acert 475hp with dpf but Im not happy
I install a cat C15 acert 475hp with dpf but I'm not happy with my fuel mileage. It's a car hauler thus the fuel mileage is never good , but it's about 10% worst than my old C15 550 hp. If I increase … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
I have a 2010 peterbilt 387, w/cat sdp engine, 475hp. I have
I have a 2010 peterbilt 387, w/cat sdp engine, 475hp. I have 2 issues. 1. When pulling hills, long ones, the manifold pressure fluctuates. This happens when I let off the throttle or when I shift gear… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
we have 2006 freightliner business class M2 with C9 caterpillar
we have 2006 freightliner business class M2 with C9 caterpillar motor. Once it warms up (over 150 degrees) starts to blow heavy white/grey smoke. Worse under load and higher RPM's. No check engine lig… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
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