Roush 511 problems

greg schroeder · #1 (**permalink**) 10-08-2008, 05:01 PM

What computer is being used?

csx4910 · #2 (**permalink**) 10-08-2008, 06:50 PM

The air cleaner looks great on that car. Apparently it is only a problem on the csx cars since the superformance hood is a bit taller with a larger opening. If the intelligent engineers at Roush cannot figure something out I will be giving him a call. It sounds like enthusiasts that have a d" do what it takes attitude" can often trump an engineer. I had someone make me a set of the screens for the trumpets but that will only the leaves and the low flying rodents! To put any miles on the car I will have to have a filter system.

SandyC · #3 (**permalink**) 10-09-2008, 02:19 PM

The Roush guys who flew out here from the factory for this were able to consistently duplicate the issues I described with the engine, whew - intermittent problems are the worst. They ended up having to adust the timing, throttle bodies, fuel/air curves and the IAC (idle adjustment control) on my engine. Evidently they put about 50 miles on the car shaking it out and testing it with a computer on board monitoring the action in real time (hope they had fun

). Charlie says they now have the tuning dialed in and the engine runs great. They also had to replace the spark plugs before any adjustments were made because they found them fouled due the above being out of whack. The car now has close to 500 miles on it so I'm having the routine 500 mile check on it done where the oil filter is sliced open and the oil is analyzed. Assuming that doesn't show anything I will pick up the car tomorrow (Friday) morning and ride like the wind.

So again, hats off to Roush for their GREAT customer service -- just extraordinary. This was all done at no charge under warranty. I'm gonna give Todd Andrews at Roush a call and give him a thank you and a big verbal pat on the back. Anthem Motors came through on this too and were invaluable in their help, so a big thanks to John and Charlie at Anthem Motors too.

SandyC · #4 (**permalink**) 10-09-2008, 04:12 PM

Oops, I spoke too soon. After an analysis the Roush guys say the IAC servomotor is too small on their FE-EFI engines and they're going to change out those IAC's with new larger and improved ones. Evidently this servomotor gadget helps at startup and cold idle. I was wrong on my previous post on what IAC (pronounced "I-yak") stands for, it really stands for Idle Air Control. They are overnighting the improved one to Anthem, but on the engine it's a pain to get at since it's located under the electrical harnesses and the stacks. So, probably no car tomorrow because of the difficulty in installation and then it has to be tested.

Stentor · #5 (**permalink**) 10-09-2008, 06:40 PM

Quote:

Originally Posted by SandyC

So again, hats off to Roush for their GREAT customer service -- just extraordinary. This was all done at no charge under warranty. I'm gonna give Todd Andrews at Roush a call and give him a thank you and a big verbal pat on the back. Anthem Motors came through on this too and were invaluable in their help, so a big thanks to John and Charlie at Anthem Motors too.

With all due respect, with the money you have in your Roush FE, you should expect that kind of service. Roush makes great engines, but it sounds like they might need to iron a few wrinkles out of their FE engines (based on the recent posts regarding trouble folks have had with them).

Good luck getting the car up and running correctly. I am sure it will run great once you get it dialed in.

csx4910 · #6 (**permalink**) 10-09-2008, 07:05 PM

Sandy,
I didn't talk to anyone over there today. Charlie had mentioned that possiblity yesterday about replacing that IYAK. Did he say if they are replacing it on all of the motors?
Ron

SandyC · #7 (**permalink**) 10-09-2008, 11:27 PM

Ron,

He said it effects all their fuel injected FE engines, so I would venture a guess and say yours will be replaced too, but I don't want to put words in their mouths. You might check with them to get the official word.

Stentor,

Yeah, you got a point. However, I kind of knew I was trailblazing with this new engine going into the process so expected a bump in the road, as it were, here and there. My 511iR is engine number 14, I think one of the guys here (Ron?) has engine number 1.

greg schroeder · #8 (**permalink**) 10-10-2008, 08:25 AM

I sold my Cobra a bit back and hope to buy another some day. I ask the questions about this particular engine as it's one I'd consider in my next build. My interest would be having a car in which I understand the system and to have ability to tune the car myself. The on board computer would be the way to go. Any data or detail, graphs or wheel HP values would really be valued to me for consideration.

I hope to hear about you in your new ride soon. That's quite a car you have. Keep up the good work and have fun. They'll get you dialed in.