Hello all,
Full Disclosure: I'm a bit of a newbie here when it comes to Toyota as well as anything diesel. I am a bit of a wrench turner and have pretty heavy experience with LS engines (swaps, troubleshooting, etc.) so i'm not a complete lost cause.
I recently purchased a 1995 HDJ81 w/ the 1HD-FT that has an issue that i'm having difficulty diagnosing due to my lack of knowledge of the engine. I should note that it drives perfectly around town and can do so for hours, this issue seems to only crop up if i'm doing long(ish) sections of highway driving (+30 minutes @ +65MPH).
When slowing down or coming to a stop after driving for a while on the highway, the engine will go to about 300-400 rpm, sputter, then die, instead of nicely settling on 800RPM as it usually does upon coming to a stop. During a road trip to test if it was vacuum booster related I instead shifted into neutral and the removal of the transmission load also caused it to dip down and die. After stalling if I'm still moving or at a stop I can restart the engine just fine but the issue will continue until the engine "cools down" after which the issue disappears. Blipping the throttle keeps it alive until I'm underway again.
Any ideas where to look and how to diagnose where the problem lives? I've started with the obvious, checking vacuum lines and associated diaphragms.
Full Disclosure: I'm a bit of a newbie here when it comes to Toyota as well as anything diesel. I am a bit of a wrench turner and have pretty heavy experience with LS engines (swaps, troubleshooting, etc.) so i'm not a complete lost cause.
I recently purchased a 1995 HDJ81 w/ the 1HD-FT that has an issue that i'm having difficulty diagnosing due to my lack of knowledge of the engine. I should note that it drives perfectly around town and can do so for hours, this issue seems to only crop up if i'm doing long(ish) sections of highway driving (+30 minutes @ +65MPH).
When slowing down or coming to a stop after driving for a while on the highway, the engine will go to about 300-400 rpm, sputter, then die, instead of nicely settling on 800RPM as it usually does upon coming to a stop. During a road trip to test if it was vacuum booster related I instead shifted into neutral and the removal of the transmission load also caused it to dip down and die. After stalling if I'm still moving or at a stop I can restart the engine just fine but the issue will continue until the engine "cools down" after which the issue disappears. Blipping the throttle keeps it alive until I'm underway again.
Any ideas where to look and how to diagnose where the problem lives? I've started with the obvious, checking vacuum lines and associated diaphragms.