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honeydo
New User
Mar 24, 2010, 4:45 PM
Post #1 of 9
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I have a 1998 dodge ram 2500,5.9 gas,150,000 miles,auto,a/c
I just had the tranny rebuilt
I cant get the engine to run
I can get it to start for a few seconds after turning it over and holding the pedal to the floor.it starts very rough.
I pulled the plugs and they were fouled sooty black Ichanged the plugs but that didnt help
Please help
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Sidom
Veteran
/ Moderator
Mar 24, 2010, 7:43 PM
Post #2 of 9
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Re: ram wont start
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Are you saying this problem started right after the tranny repair or ran ok for a bit & now has the problem???
If it happen right after installing the transmission I would check the ckp sensor for damage.....
If it's been running ok you should have the codes read to see if there is any direction there..........
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steve01832
Veteran
Mar 25, 2010, 2:10 AM
Post #3 of 9
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Re: ram wont start
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You may want to check fuel pressure also. If the plugs are fouled the pressure regulator may be stuck resulting in high pressure allowing too much fuel through the injectors. If it's ok, you may also have a MAP sensor going south.
Steve
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honeydo
New User
Mar 25, 2010, 2:36 PM
Post #4 of 9
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Re: ram wont start
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The problem started right after the repair.What and where is the ckp sensor .The truck is still outside the tranny shop.The shop says they didnt break anything!!!!!!!!
(This post was edited by honeydo on Mar 25, 2010, 2:39 PM)
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honeydo
New User
Mar 25, 2010, 2:41 PM
Post #5 of 9
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Re: ram wont start
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I am not familiar with fuel injection .how do i check the pressure?
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Mar 25, 2010, 3:22 PM
Post #6 of 9
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Re: ram wont start
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On the fuel rail there should be a cap and a fitting with a Shrader in it like checking tire pressure sort of. The threads are not all the same vehicle to vehicle of course so if you buy a tester make sure it will thread onto yours. Adaptors for others can add up some bucks and really nice sets are big bucks. Here's a decent one that sells for about $60.
Should be available at any parts outlet,
T
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nickwarner
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/ Moderator
Mar 25, 2010, 6:32 PM
Post #7 of 9
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Re: ram wont start
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ckp is the crank position sensor. It is on the top of the bellhousing bolted to the motor and if not removed prior to pulling the transmission tends to get wrecked. Had the identical problem with a friend's truck that was a like model to yours. They put a new trans in and it wouldn't run. I replaced the crank sensor and it fired right up. Check for spark. I bet you aren't getting it. The computer must verify the exact position of the engine in its rotation for it to allow spark to happen. When it can't it gives no spark.
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James_85_jr
User
Mar 26, 2010, 9:41 AM
Post #8 of 9
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Re: ram wont start
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one thing i noticed no one said to do is check your grounds from engine to body those could have been bumped when the trans was changed and cause it to do that
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Mar 26, 2010, 10:57 AM
Post #9 of 9
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Re: ram wont start
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Engine to body grounds are a must and they hide them throughout vehicles. If in question you could look for probably braided wire with eyelet ends broken clean off or messed up, OR as a test add (even if you just use good jumper cables) from block to body with nice bared connections - if that solves all or part of the troubles look for the original which might have been on a bolt engine to trans on to body. Replace or add one depending on what you might find,
T
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