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throttle issues

Will L.

Well-Known Member
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Location
Boulder City Nv
Drive around with gearshift in 1st gear at 2,000 and see if it can maintain 2,000 rpm continuous. Even sitting in park try to hold it exactly at 2,000 rpm.
 

Husker6.5

135' diagonal 16:9HD, 25KW sound!
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Lincoln, NE
When you say "runs rough" do you mean it feels like there's dead cylinder(s) or that the rpm isn't holding steady? How many miles on your vehicle? Original IP or has it been replaced with a reman somewhere along the line?

I still think the root of your problem is your IP is wearing out. Keep running with it like that and it will eventually take out your transmission due to the RPM fluctuations causing the TCC to repeatedly lock/unlock in downhill coasting. How do I know this he asks . . .
 

Will L.

Well-Known Member
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Location
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I am sorry that I didn’t respond back earlier after you answered my question.

You need to run variations on the 2000 rpm test. Points towards bad ip if you can’t hold 2k.

Do clear lines on both ip input and return.
Sample the fuel and make sure it is clean, no contaminants, etc
Get fuel pressure gauge tapped in just before the ip and see what it is doing.
Need a scanner on there like mentioned above.
 

Husker6.5

135' diagonal 16:9HD, 25KW sound!
Messages
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Likes
1,384
Location
Lincoln, NE
Is the IP properly timed? Glow plugs and system operating fine? (Note: Even if it's warm outside, always use the glow plugs before starting)
 
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