Turbo Boost

Peter, it's all good. I have surrendered to the notion that you are as adamant about your driving technique as I.

I never accelerate off of a dead stop with full throttle. The small ratios in the lower gears combined with excessive throttle position creates much unneeded stress on things. I step into it and the heavier I am the slower I step into it. Usually getting close to the floor around the time it is time to shift.

There are few circumstances when I do use full throttle. If I am passing someone so not to linger or if I'm on the downgrade and know of an approaching hill or if I'm rushing but even then only if I can get the RPM's to go up.

To "hold" the hill is when the RPM's remain neutral at full throttle and to "loose" it they are dropping.

Larry eluded to the reference to the DD manual I only referred to it to strengthen my argument.

A headwind is usually not a problem but strong crosswinds often are. Again I would seek a speed that would allow me to operate with less than full throttle.

I will agree with you on DD's poor choice of terms IF for the general public but I would have to assume that they think they are talking to drivers.

Quote:

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Originally Posted by Petervs

Hey Tuga,

Repeat after me:

" I pledge allegiance to the flag Of the Prevost Owners Group of America.

And to the cameraderie for which it stands,

One chassis vendor, over all others except maybe Newell,

With fun and education for all,

and I promise not to listen to truckers at fuel stops any more."


Hey, thanks too for letting me know about Cajun Peak, next time I am down there I will bring my ruler and look for it!

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I will recite the pledge but somebody needs to show me the secret handshake! We just got back from Indio and 3 guys on Newell row knew the secret POG handshake and I didn't! It was embarassing! When you ask for directions to Cajun Peak remember that there ONLY 3 directions in south Louisana: Up the bayou, Down the bayou, and Across the bayou!:D GOOD LUCK FINDING IT! Are you and Katherine coming to Sevierville?

Thank you Debi for the kind words. Karen and I are going to the rally in Sevierville; will you and Bob be there?

Joe,

You and I can't break the old trucking habits and doubt we ever will. The various driving techniques really don't matter, the engines now days have become idiot proof, so other than an overspeed, the computers will take care of everything.

Like Tony Soprano says, "forget about it."

Hammer down boys, you won't hurt it....

Quote:

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Originally Posted by Joe Cannarozzi

Tuga what do you think about all this? Gonna change your driving habits or not:eek:

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Well Joe, I respect Jon and Peter's knowledge and education. With that said, I realize that you are both right. It seems to me that we are talking about 2 very different engines: the 8V92 which has no computers in it and the series 60 which is operated extensively with a computer. It sounds like the computerized series 60 "knows when to throttle back" much the same as the old truckers know when to throttle back on the 8V92. So to answer your question, I am going to try using the performance mode on the transmission and see what happens. If the engine overheats I'll let you know:D

Yeah Tuga,

Jon, I think we have a convert on the very edge of coming over to the Light side.

Sorry to report katherine and I will not make Seiverville, but we are sendding Brian and Beverly as understudies. We are trying for Spearfish later this summer.

As for the Bayou directions, there is one other one, during the hurricane anyway, "Under the bayou."

I'd like to see anyone go full throtle behind Jon, 'the 62 MPH Guy!' Hey Jon , are you a closet full throtler?

I will let others reveal that. Roger and I have a few thousand miles running together. I'll accept his opinion.

Don't take JDUB's word for it. Going to POG I I was having some fun with him.

Ok guys I have an intermittent issue on my bus.

The Orange Check Engine light comes on the dash, and in the display panel that normally tells the time where you can also modify mileage and check fuel consumption, It sometimes comes up with CHECK ENGINE AT NEXT STOP. When this happens the Turbo Boost Pressure Gauge stops reading.

I don't notice any difference in the power or driving but it concerns me.

I took it to Stewart & Stevenson and they read the DDEC Code which is # 86

The code states in the book, # 86 " External pump or barometer pressure sensor input voltage high". S&S says this engine does not have a barometer pressure sensor?

What should I do or ask them to do? Remember it only comes on once in awhile. I haven't seen the display in the last two days of driving?

Thanks for your advice.

Gary S.

I think that sensor that reads barometric pressure is also referred to as a map sensor.

The question is what do they recommend that you do? A check engine light has to be dealt with.

Could it be the turbo boost sensor (located on the passenger side of the engine on the intake manifold) is failing? It determines how much boost you have and it is part of the DDEC calculation that determines fuel flow through the injectors. If it does not sense boost the engine will deliver very little power.