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  #1  
Old 01-06-2018, 10:18 PM
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OM617 problem in gear

I'm having a problem kick my butt and I'm hoping someone can guide me in the right direction . Here are the facts . My wagoneer was running perfect and shifting perfect before I pulled the engine out and swapped in the om617 . After the install the om617 started up right away and it revs up and down perfectly . The car I got the engine from was parked for about 6 years without starting , it had 146K miles and it was a one owner car always dealer serviced . The engine is very healthy and has perfect compression and the turbo is rebuilt .

The problem I'm having is as follows . As stated before, the om617 starts right up and runs great but when I shift into gear and give it throttle I have about no power in reverse or drive . I give the engine throttle but it doesn't even try to rev . If it where a transmission problem I would expect the engine to try and rev up and possibly the trans to slip but nothing happens .

Things I've already done . Changes out fuel filters , , changed out fuel return lines , checked my transmissions kick-down cable ( about 100 times already ) , checked trans fluid level .

I've been working on modern gas turbo cars for about 15 years but this is my first diesel and my first domestic vehicle and I'm lost at both , I can do anything to a car with a computer but give me one with 3 wires and it kicks my ass . Any and all help will be greatly appreciated , I'm not at all familiar at all with these so please throw anything you can think of at me .
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  #2  
Old 01-06-2018, 10:35 PM
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You might check the suction and discharge valves in the fuel pump. If they get gummed up, you can have problems like you are experiencing.
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Old 01-06-2018, 10:43 PM
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Originally Posted by tangofox007 View Post
You might check the suction and discharge valves in the fuel pump. If they get gummed up, you can have problems like you are experiencing.
Thanks for the reply .Do you have a diagram of this part ?
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Old 01-06-2018, 11:02 PM
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When pressing the accelerator pedal to the floor in the vehicle, does the throttle lever on the IP go all the way to the stop? Have a helper stomp the skinny pedal and see how far the lever on the IP travels. You can still get the engine to rev a decent amount in neutral without travelling all the way to the stop, but once in gear, you'll have about 0 power.
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Old 01-06-2018, 11:05 PM
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Originally Posted by Ltpro View Post
Do you have a diagram of this part ?
Here is a picture:

http://www.peachparts.com/shopforum/attachments/diesel-discussion/90208d1299467837-random-misfire-no-start-om617-pump_ygth416y68.jpg
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Old 01-06-2018, 11:15 PM
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Originally Posted by Diseasel300 View Post
When pressing the accelerator pedal to the floor in the vehicle, does the throttle lever on the IP go all the way to the stop? Have a helper stomp the skinny pedal and see how far the lever on the IP travels. You can still get the engine to rev a decent amount in neutral without travelling all the way to the stop, but once in gear, you'll have about 0 power.

All the throttle links have been checked and everything is on point , the engine will go FOT with the petal from inside the cabin - the engine revs as it should and sounds strong while revving .
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Old 01-06-2018, 11:17 PM
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Thanks a million , I highly appreciate that . I just took a look at it and it looks like its leaking a bit there - its wet after I had spray it clean it earlier today .
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Old 01-06-2018, 11:21 PM
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What transmission is mated to the engine? Is it the Mercedes transmission, or is it the Wagoneer transmission?
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Old 01-06-2018, 11:50 PM
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Originally Posted by Diseasel300 View Post
What transmission is mated to the engine? Is it the Mercedes transmission, or is it the Wagoneer transmission?

The wagoneer trans , a 727 .
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Old 01-07-2018, 10:08 AM
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If you lift the rear wheels off the ground and drop it in gear, do the wheels turn and can the engine accelerate?
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Old 01-07-2018, 12:09 PM
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Originally Posted by Diseasel300 View Post
If you lift the rear wheels off the ground and drop it in gear, do the wheels turn and can the engine accelerate?
it actually moves around but feels as-if its either running a super big gear or the engine is not making any power . The transmission is not slipping but it does have a delay in changing gears but that could be because i can barely get it over maybe 2000 rpm's . I'm about to run an electric fuel pump into the lift pump to see if that may be the issue . The engine starts right up on the first try everytime revs up great . I've been doing even more reading since I made this post and I'm wondering if maybe something is clogged-up from sitting around for a few years , it may be getting enough fuel to run and rev up at idle but not enough to move it under load . Thanks for your post and please keep any suggestions coming no matter how simple they may be , I'm most likely over-looking something extremely simple .
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Old 01-07-2018, 12:27 PM
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Did you pull out a 230 i6? Have you tried running a diesel purge to clean up the IP and injectors?
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  #13  
Old 01-07-2018, 03:14 PM
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Originally Posted by dieselbenz1 View Post
Did you pull out a 230 i6? Have you tried running a diesel purge to clean up the IP and injectors?


I pulled out a 360 and no I haven't done any sort of purge yet to clean the system - where is the best write up to accomplish this ?
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  #14  
Old 01-07-2018, 03:45 PM
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https://www.youtube.com/watch?v=n2dUA-Rnsmc
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Old 01-07-2018, 04:01 PM
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Originally Posted by Ltpro View Post
it actually moves around but feels as-if its either running a super big gear or the engine is not making any power . The transmission is not slipping but it does have a delay in changing gears but that could be because i can barely get it over maybe 2000 rpm's . I'm about to run an electric fuel pump into the lift pump to see if that may be the issue . The engine starts right up on the first try everytime revs up great . I've been doing even more reading since I made this post and I'm wondering if maybe something is clogged-up from sitting around for a few years , it may be getting enough fuel to run and rev up at idle but not enough to move it under load . Thanks for your post and please keep any suggestions coming no matter how simple they may be , I'm most likely over-looking something extremely simple .
This is a big difference from "not being able to move". 2000 RPM should be moving the car, maybe not very fast, but consider that in a factory condition, you're doing ~1500 RPM to drive 30mph...

You may have issues with the ALDA system which is preventing the turbo from spooling due to the fuel being cut way back. Do you have a line running from the intake manifold to the ALDA? If not, there's your problem. If you do, try taking it apart at the intake manifold and see if the banjo bolt is all full of carbon. Barring all else, try removing the ALDA unit from the injection pump and see where that gets you. Without fuel enrichment to spool the turbo, you'll be driving a gutless wonder.
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'11 Honda Accord EX - "The Daily" 64K
'83 500SL Euro - "The Money Pit" 116K
'86 300SDL - "The Diseasel" 186K
The Diseasel Thread - Everything You Didn't Know You Wanted To Know
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