actuator went bad?

[Falco]

Howdy,

Today I tried to diagnose a local Ty. One question here. The fellow tried to adjust his WG rod a few weeks ago but he did it the wrong way. He haven't loosened the nut and adjusted the eylet, but turned the whole rod wich turned around in the actuator's house. Since then the boost has been fluctuating between 9-17psi (stock chip) and the performance became worse. It was quite stable before, a bit on the low side.

Could he destroy the actuator? The spring seems to be working and the rod is around the factory specs (7/8th overlap). I tried to shorten the rod up to two turns (the proper way), but it did nothing. Also made a run with the solenoid looped out and it was solid 10psi all the time.

Now I've two trucks with boost problems to work on. Pls help if you can.

TIA,

 

[kwick6]

I would try another WG solenoid.

Scott

 

[Falco]

Thanks Scott, I tried it. Picked out my new one from my Sy, but it didn't help.

Peace,

 

[myclone]

Sounds like the diaphram in the WG actuator is now torn if he turned the whole rod not just the end.. Ooops.

Will the actuator hold any vacuum if its applied with a pump to the port or does the rod move when air pressure is applied to the actuator port? If neither of these things can be accomplished then I would procure a new actuator.

Just my .02

 

[kwick6]

On 2002-04-09 00:40, myclone wrote:
Sounds like the diaphram in the WG actuator is now torn if he turned the whole rod not just the end.. Ooops.

Will the actuator hold any vacuum if its applied with a pump to the port or does the rod move when air pressure is applied to the actuator port? If neither of these things can be accomplished then I would procure a new actuator.

Just my .02

I was thinking the actuator was still good because he said that it was a steady 10psi with the WG solenoid out of the loop. The actuator has boost applied to it, and since it was stable at 10psi then I was thinking the actuator was working. I would look closely at the vac lines, check for leaks. The 90's tend to get cracks you cannot see, so look close.

Was there any boost problems existing with the truck that caused this guy to start turning on the actuator rod in the first place?

Scott

 

[Falco]

He had no real boost problems. No he has. People... :wink:

Anyway, I found out. The cable which goes between the ECM and the actuator was cracked somehow. I replaced it with an other one on an other route, soldered the ends to the ECM's port and to the solenoid and it solved the problem. Quite consistent boost.

Anyway, Scott thanks for you help, I really appreciate it.

I gonna go back to work on my truck now. :grin:

Cheers,

 

[kwick6]

Glad you found it. Boost control can be a real PITA. Just got mine hooked up with the TE44, using an ANS boost controller. Truck is more funner to drive now.

Scott

 

[kwick6]

BTW, what happened to your webpage. Caught a glance of it, saw lots of good info. Are you still working on it or something?

Scott

 

[Falco]

Scott,

It's up, but not finished yet. Hopefully will be able to finish soon. Tonight I plan to go to track, so I focused to prepare my truck on the last few weekends. Anyway if I can show up some good results there will be no excuse to update the site.

Peace,