Intermittent Low Power
#1
Intermittent Low Power
I need some help I'm semi new to this. got a 98 one ton 24valve 5 speed. Here's my problem Every now and then I will lose power have maybe 1/4 throttle acts like it's going into a limp mode sometimes check engine comes on. It stays like that for a little while sometimes I can cycle my key a few times and get full power back I don't have anywehre to check codes also if I park with the nose up I lose prime takes 15 seconds to start or so. I'm thinking possible air leak hopefully not injection pump I need to know where to start I'm good at fixing gas engines but I love diesels and this is my first major problem. Oh ya and when I get off the highway it seems to run a hair rough when it idles. thanks
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iI have a 24 valve 98 three quarter ton with a rebuilt tranny , a new filter and a complete diagnostic on the lift pump which is within specs after 290,000 miles. My truck goes into limp mode after 20 miles or any large hill. It slows to a stop and I shift to low and take off with full power. I have no codes except one injection timing code. The limp mode seems to trigger and reset itself. I read the many dead peddle posts and wonder why there is no code for limp mode that limits fuel and throttle response. I suspect the brain has a communication problem. Do lift pumps go intermittent? I am confused as well.
#7
Mine seems to be a 1/4 throttle situation I have normal power to about 1300rpm then it slowly climbs seems to happen after I let truck idle. lately if I fire it right up and drive it does ok Just drove to my inlaws did great then I let it idle for about 10 minutes while I was airing up a tire and had no power going to town. reset and runs great on the way home after checking and clearing my codes at auto zone.
#9
iI have a 24 valve 98 three quarter ton with a rebuilt tranny , a new filter and a complete diagnostic on the lift pump which is within specs after 290,000 miles. My truck goes into limp mode after 20 miles or any large hill. It slows to a stop and I shift to low and take off with full power. I have no codes except one injection timing code. The limp mode seems to trigger and reset itself. I read the many dead peddle posts and wonder why there is no code for limp mode that limits fuel and throttle response. I suspect the brain has a communication problem. Do lift pumps go intermittent? I am confused as well.
#10