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Related Medium and Heavy Trucks Questions
2009 Peterbilt with Cummins ISX 425ST Starts and dies
2009 Peterbilt with Cummins ISX 425ST Starts and dies sometimes immediately, sometimes when throttle is advanced to full. Sometimes It will run at idle or on cruise for extended period's then will ran… read more
Nich1019
Nich1019
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Vocational, Technical or Trade School
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I have a 2000 CAT 3126 that idles @ 70 psi fuel pressure but
I have a 2000 CAT 3126 that idles @ 70 psi fuel pressure but when you come off idle it begins to drop and it will actually go to 0 psi under a load and the engine still runs ok at psi till it eventual… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
I'm having trouble with 3406E Cat. SN 2WS02581 in a 1999
I'm having trouble with 3406E Cat. SN 2WS02581 in a 1999 Peterbilt. Crank no start. I have fuel pressure. 35-40 psi cranking. I've removed and ohmed both crank and cam sensors and they are within spec… read more
Nich1019
Nich1019
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Vocational, Technical or Trade School
64 satisfied customers
2004 Peterbilt 379 with cat c15 mbn The truck starts fine in
Hello 2004 Peterbilt 379 with cat c15 mbn The truck starts fine in the morning , but after I get to operation temperature it will vibrate at idle then it will drive rough when I take off between 1000 … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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I have a 97 International 9400 that will start fine and idle
I have a 97 International 9400 that will start fine and idle but then when I go to take off its like it starts loosing fuel. A few times I've been able to hold the pedal down and after about a min it … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
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I have a 2012 Cummins ISX. We just completed an out of frame
I have a 2012 Cummins ISX. We just completed an out of frame overhaul. Motor runs great, but has a weird oil pressure situation. At start up, the oil pressure gauge goes up to about 70 psi. Stays ther… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
Have a Cat 3406E with low fuel pressure. Replaced fuel pump
Have a Cat 3406E with low fuel pressure. Replaced fuel pump with new and brought fuel pressure up to 84lb from 66lbs. Believe need to be over 100. Is the pump adjustable or do you know the specs? than… read more
Curtis B.
Curtis B.
Technician
Associate Degree
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My cat 3406e motor oil seems to be diluted on the dip stick
Hello my cat 3406e motor oil seems to be diluted on the dip stick How bad could it be for the engine if I drive it like that for at least 6 more hrs… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I have a 3406E CAT that has been setting for a year. I took
Second opinion] i have a 3406E CAT that has been setting for a year. I took the fuel line off the pump and stuck it in a five gal bucket. Replaced the fuel check valve and the fuel primer pump. I fina… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I have a caterpillar c12, checking fuel pressure, my book
I have a caterpillar c12, checking fuel pressure, my book says specs are 75 to 90 but it doesn't specify whether that's at idle or high idle. I have 45 pounds at low idle and 130 at high idle. Is this… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
3176 CAT BLEEDS DOWN AFTER PRIMING THE SYSTEM, I GOT A GAUGE
3176 CAT BLEEDS DOWN AFTER PRIMING THE SYSTEM, I GOT A GAUGE ON THE TEST PORT WHILE RUNNING THE GAUGE SHOWS 60 PSI AND AT HIGH IDLE IT FLUCTUATES BETWEEN 100 AND 75. ANY IDEAS MAYBE BAD PUMP?… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Low power with slow foot throttle response with empty truck, what comm
Low power with slow foot throttle response with empty truck, what common items can cause this condition?… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
1999 IH 4700 DT466E YH225743, Low power, runs good but feels
1999 IH 4700 DT466E YH225743, Low power, runs good but feels like it is pulling a heavy trailer. Won't go any faster than 60 mph @ 2750 rpm and it takes a while to get there. Builds 16 psi of boost an… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
2000 GMC C7500 3126 Cat. Shuts down occasionally and won't
2000 GMC C7500 3126 Cat. Shuts down occasionally and won't restart. Other days it starts and runs fine all day long. The only Data link we can find is OBD2. My Prolink IQ shows no communication. Is th… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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I have a 2001 Kw with c15 475 cat with a loss of power. No
I have a 2001 Kw with c15 475 cat with a loss of power. No check engine light, no obvious noises for a missing cylinder. Idles and runs perfectly just a loss in overall power and acceleration. No fuel… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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c 7 cat with derate at 55 mph says low fuel pressure . regulator
c 7 cat with derate at 55 mph says low fuel pressure . regulator changed 12000 miles transfer pump changed with no effect on derate… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I have a problem with my 2003 Kenworh T 2000 I have C16 engine,
I have a problem with my 2003 Kenworh T 2000 I have C16 engine, the presure tends to drop only when on the highway, when I,m parked all is ok, the problem is only the bottom gage drops slowly when mov… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
I have a 2000 Detroit diesel 60 in a 2003 freightliner. The
I have a 2000 Detroit diesel 60 in a 2003 freightliner. The truck has very low power in high range without a load-no misfire no smoke. Fuel psi at idle is 15, 35-45 midrange and maxes out at 70 psi ne… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
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