Archived How to install boost, pyro & trans. temp.

[Pedersen]

I have just bought a complete set of gauges for my 1999, but there are no manual to where to connect each unit.

I was told that I need all the gauges for trouble shooting my power problem. My truck has lost all the toque. And it get's hot special when I tow my horse trailer.

Please help.

Thanks

Per

 

[CDonaldson]

You can find installation information at www.dieselmanor.com or you can go to any of the gauge manufacturers websites.



CD

 

[McLaughlin]

Basically, the EGT probe is installed either pre or post turbo. Pre turbo (in the exhaust manifold) seems perfered as the post turbo location reports lower temps and you would be interested in the maximum. Unless you have a pretapped manifold (some ATS and maybe HTT) you will probably have to drill and tap for the probe. You need to be careful to not get metal bits in the turbo if you drill the exhaust manifold. Like CDonaldson suggested do a web search dieselmanor and a couple of other places have the instructions.



The boost gauge taps into the intake manifold. You can either use a special hollow bolt and use it to replace one of the intake manifold bolts but be careful since some of the bolts do not provide access to the inside of the intake manifold. I used one of the bolts closest to the engine just toward the back of the truck. On some trucks there is also a plug you can remove for the boost fitting. The plug is on the side of the intake manifold about midway down the side (mine is under the tube from the intercooler).



The transmission pan sensor can either be installed in the transmission pan or in the hot line exiting the transmission to the transmission cooler. Installation in the line is supposed to be more accurate since the temps reported tend to be higher but you may have to buy a different line from the dealer which has a connector for the sensor (I don't have the part number but you might try a search on the forum - I think it has been posted before). Installing the sensor in the transmission pan may be difficult if you still have the stock transmission pan, I have an aftermarket pan which was already tapped in the back of the pan so the install was easy.

 

[3grumpy]

This might be of interest to you.



PYRO:



Temperatures will vary whenever the throttle is moved or the terrain changes. The peak number is the most important while towing, the ISB can be safely run up to 1450 for short bursts and 1350 all day long. This number is strongly affected by modifications weather it be Air flow or Fuel delivery. If air flow and fuel flow are increased equally, we can increase power to very impressive levels with no increase in EGT or smoke.





Average temps for a stock truck



Idle – 250 to 450

Cruise no load – 400 to 700

Cruise with trailer – 500 to 800

Pulling hill no load – 500 to 1000

Pulling hill with trailer – 900 to 1250





Go to high and risk these...



exhaust gaskets

exhaust manifold

cylinder head casting

pistons

rings

cylinder bores



Cylinder #1 has an obstruction of the intake port caused by a casting boss for accessory mounting bolt placement plus a forward facing valve port which causes the intake air to run a maze to reach the cylinder. These reduce the airflow to the #1 cylinder, causing it to run richer than the other cylinders. Often, the exhaust manifold gasket has been cooked on cyl #1, while the others are fine.







Boost:



Boost pressure tells us how well your turbo is working, weather or not you have a boost leak, and how your waste gate is adjusted.



Average pressures for a stock truck





Idle – 0

Cruising 70 mph no trailer – 5 to 10 psi

Cruising 70 mph with trailer – 7 to 15 psi

Pulling a hill no trailer – 10 to 20 psi

Pulling a hill with trailer – 15 to 21 psi





Go to high and risk these...



Turbo

Intercooler Boots

Head Gasket



Again this number will vary like EGT, with throttle position and load. Air flow and fuel flow increases will make this gauge move much faster.







Fuel Pressure:



Pressure created by the electric fuel pump that carries the fuel from the tank to the filter then on to the injection pump. This has become a very important gauge on the ISB with all the fuel pump failures that have occurred and cause drivability issues. This gauge is not very exciting but when there is a problem it becomes very important in diagnosis, plus it can save a very expensive injection pump from failure due to lack of lubrication and cooling.







Average Pressures on a stock truck



Idle – 10 to 14 psi

Cruising – 8 to 12 psi

Pulling a hill with trailer – 8 to 9 psi





Absolute minimum pressure is 8 psi; anything below that and you need either a new lift pump on a stock truck or an upgraded fuel system on a modified truck







Automatic Transmission Temperature:



Temperature of the transmission fluid that leaves the torque converter and goes on to the coolers. Again not very exciting be very important to the life of your transmission and or torque converter.





Average temperatures on a stock truck



Idle in neutral or park – 140 to 160

Idle in gear – 160 to 260 depending on how long.

Cruising – 70 mph no trailer 150-170

Cruising – 70 mph with trailer 160-180

Pulling hill no trailer – 180-220

Pulling hill with trailer – 190-280 depending on load and how long a hill, or weather you can pull the hill in lock up or not





Temps will always be higher when out of lock up, because 90% of the heat generated in an automatic transmission is from the shearing of the fluid in the converter. Temps will be lower when in lock up because the input shaft of your transmission is locked to the crankshaft on the engine



thanks to www.dodgedieseldatabase.com



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