Quote:
Originally Posted by Irie
Ok. Found some new issues with my JEEP
1. Looked into some more about the coolant sensor. It is actually pretty important. So I took it off and found that it is a aftermarket one, with 3-pins instead of 2 (eeeh). I did some test on it and it seems to be broken. The cables seems to be ok (continuoty test).
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2. Good or bad injectors ?? They all sound alike.... Maybe they still are gunked up (??) I have to check them all I guess when I get the tools BUT when I was looking at the No 4 injector I found this... But, but... t he fuel drain tube is not here. Someone put a plug in it. Why do you want to do that?? Is this some kind of "MacGyver" fix when the injector or the pump is bad??
How do I fix AND where is the "tee banjo fitting" - This fuel
drains into the fuel drain tubes (Fig. 7) and back to
the tee banjo fitting, which is connected to the same
line as the overflow valve, which allows a variable
quantity to return to the fuel tank.
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The saga continues...
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The temp sensor is a simple thermistor type. The later ones have 2. One in each of head 2 &3. Both of mine have failed & I have replaced the thermistors ~ had to open up the sensor to get at it, replaced the thermistor, a couple of $ at an electronic parts shop, & glued them back together with epoxy resin. If the 3 pronged one has 2 of the prongs showing the right resistance you can use it. If the temp gauge was working, the sensor was fine. Stop trying to fix what isnt broken.
That plug on the #4 injector return line is standard Bosch equipment. The return is via #1 where there is a hose back to the return valve on the back of the IP. This is the same on most Bosch systems including Mercedes Benz diesels of that type.
If you pull the injectors out, how will you tell if they are faulty? You cant by looking at them. Do not try & dismantle them once you have them out or they will become faulty.
You can get them tested by a diesel injector specialist.
Just remember the engine is not euro 5 or 6 when it comes to emissions. One expects some smoke.
Best you stop playing around with things you dont understand. Just get it tested without #1 injector sensor connected & then start your playing if you must. If you keep going down your current path you will end up with a shed full of bits & a jeep that wont go. Your approach sounds like a teenager with a toy that he is trying to work out how it works.