Hi guys, sorry for the story but this is more for detail and diagnosis help...
Comming home from a camping trip(7hrs away) my rig developed a weird problem about 30 minutes from town. I first noticed it when I went to pass a car and I could barely get over 110km/hr and about 10mins later 100km/hr and progressively got worse as I got into the city and by the time I got to the neighborhoods I could only get up to 60km/hr. During this whole time my boost was all over the place and I noticed that if I took off from a stopped position it would climb to 11PSI and then bleed off and the most it would give me was 4 maybe 5 PSI until I came to another red light or stop sign.
Unfortunately I had no time to pull things apart since it was late and I had to catch a flight at 4am to go back to work and won't be coming home for 28 more days. Fortunately I have a brother thats volunteering to help diagnose the problem while I am away.
Here is what I've had him do so far:
Take off the intake side piping to get access to the Turbo...he noticed a lot of oil in the pipes due to the breather but he checked the oil level and it was good.
He then proceeded to pull off the waste gate actuator air line from the turbine housing and plug it.
He took it for a spin but carefully watched the boost gauge so he wouldn't spool the crap out of it. No loss of boost and he said it was insanely powerful at 15psi....he couldn't help but give it a go. He said the throttle response was fast and stable.
So this leads me to think that the wastegate Actuator is pooched.
He didn't have time grab a bike pump with gauge or anything like that to test the actuator but if the wastegate is staying closed then maybe the actuator is sticking internally?
What do you guys think?
By the way it's for a 1990 1HD-T with 186 000kms
Gord
Comming home from a camping trip(7hrs away) my rig developed a weird problem about 30 minutes from town. I first noticed it when I went to pass a car and I could barely get over 110km/hr and about 10mins later 100km/hr and progressively got worse as I got into the city and by the time I got to the neighborhoods I could only get up to 60km/hr. During this whole time my boost was all over the place and I noticed that if I took off from a stopped position it would climb to 11PSI and then bleed off and the most it would give me was 4 maybe 5 PSI until I came to another red light or stop sign.
Unfortunately I had no time to pull things apart since it was late and I had to catch a flight at 4am to go back to work and won't be coming home for 28 more days. Fortunately I have a brother thats volunteering to help diagnose the problem while I am away.
Here is what I've had him do so far:
Take off the intake side piping to get access to the Turbo...he noticed a lot of oil in the pipes due to the breather but he checked the oil level and it was good.
He then proceeded to pull off the waste gate actuator air line from the turbine housing and plug it.
He took it for a spin but carefully watched the boost gauge so he wouldn't spool the crap out of it. No loss of boost and he said it was insanely powerful at 15psi....he couldn't help but give it a go. He said the throttle response was fast and stable.
So this leads me to think that the wastegate Actuator is pooched.
He didn't have time grab a bike pump with gauge or anything like that to test the actuator but if the wastegate is staying closed then maybe the actuator is sticking internally?
What do you guys think?
By the way it's for a 1990 1HD-T with 186 000kms
Gord
