I have a 2001 Dodge Durango 4.7. One day while driving it started spitting and sputtering and then died. It started back up and I went and put $20 in gas in it since the low fuel light had came on, it continued to spit and sputter all the way home and died a few more times. The engine light was on so I had the codes ran and it showed the cam/crank position sensor as the problem, changed those and it would not start, have since changed the ISP, TPS and the ECM, still will not start. If I turn the key on and off 3 times and hold the gas petal to the floor it tries to start but as soon as I let off the pedal it dies. Any help would be greatly appreciated.

 

You might have a bad fuel pump. Check the fuel pressure. Not sure what the ISP is. Did you mean IAC? That controls idling, not startup.

 

Yes, I meant IAC. How do I go about checking the fuel pressure?

 

 

The tensioner broke but the chain is still intact what are the chance that it messed something else up?is there anyway to tell if it did?

 

Might be out of timing then, in which case it might be a good thing that you weren't able to start it. Even cranking it might do damage though, so stop that until you are able to verify. If you have the heads off, you could look at the pistons and valves to see if there were any collisions. I assume you don't, so you could check the timing marks to make sure they are in alignment. Check step 32 below.

4.7L Engine

1. Remove the timing chain cover. See Maintenance Manual.
2. Remove cylinder head covers. See Maintenance Manual.
3. Rotate engine to line up crankshaft damper mark and TDC mark. Check that camshaft sprocket V8 marks are at 12 o'clock. If not, rotate engine 360? and recheck.
4. Compress and pin the primary chain tensioner.
5. Cover the oil pan opening.
6. remove the secondary chain tensioners.
7. Remove the camshaft position sensor from the right cylinder head.
8. Remove both cam sprocket bolts.
9. Hold the left camshaft steel tube with adjustable pliers and remove the sprocket. Slowly rotate the camshaft about 15? CW to a neutral position.
10. Hold the right camshaft with adjustable pliers and remove the sprocket. Slowly rotate the camshaft about 45? CCW to a neutral position.
11. Remove the idler sprocket assembly bolt.
12. Slide the idler sprocket assembly and crank sprocket forward at the same time to remove the primary and secondary chains.
13. Remove both pivoting tensioner arms and chain guides.
To install:
14. Compress the secondary chain tensioner piston until the piston step is flush with the tensioner body. Using a pin or suitable tool, release the ratchet pawl by pulling the pawl back against spring force through the access hole on the side of the tensioner. While holding the pawl back, push ratchet device to about 0.08 in. (2mm) from the tensioner body. Install special tool 8514 (lock pin) into hole on front of tensioner. Slowly open vise to transfer piston spring force to lock pin.
15. Position primary chain tensioner over oil pump and insert bolts into the lower two holes on tensioner bracket. Tighten bolts to 250 inch lbs. (28 Nm).
16. Install the right side chain tensioner arm. Apply thread-locking compound to torx bolt and tighten to 150 inch lbs. (17 Nm).

NOTE
The silver bolts retain the guides to the cylinder heads and the black bolts retain the guides to the engine block.

17. Install the left side chain guide. Tighten the bolts to 250 inch lbs. (28 Nm).
18. Install the left side chain tensioner arm. Apply thread locking compound to the Torx bolt and tighten to 150 inch lbs. (17 Nm).

WARNING
Do NOT over-tighten tensioner bolts. Tighten to specified torque only.

19. Install both secondary chains to idler sprocket. Align two plated links on the secondary chains to be visible through the two lower openings on the idler sprocket (4 o'clock and 8 o'clock). Once the secondary timing chains are installed, position special tool 8515 to hold the chains in place for installation.
20. Align the primary chain double plated links with the timing mark at 12 o'clock on the idler sprocket. Align the primary chain single plated link with the timing mark at 6 o'clock on the crankshaft sprocket.
21. Lube the idler shaft with clean engine oil.
22. Install all chains, crankshaft sprocket and idler sprocket as an assembly. After guiding both secondary chains through the block and cylinder head openings, tie up chains with rubber strap or equivalent to maintain tension.

see Fig. #1 of 5: Timing chain assembly-4.7L engine

see Fig. #2 of 5: Insert a pin to hold the primary chain tensioner-4.7L engine

see Fig. #3 of 5: Crankshaft position sensor (1) and camshaft position sensor (3)-4.7L engine

NOTE
It is necessary to rotate the camshafts slightly for sprocket installation.

23. Align the left cam sprocket L dot with the plated link on the chain.
24. Align the right cam sprocket R dot with the plate link on the chain.
25. Remove excess oil from the cam sprocket bolts to ensure proper torque.
26. Remove special tool (lock pin) 8515. Attach both sprockets to camshafts. Install, but do NOT torque sprocket bolts.
27. verify that all plated links are aligned with marks on all sprocket and that the V8 marks on the sprockets are at 12 o'clock.

WARNING
Ensure the plate between the left secondary chain tensioner and block is correctly installed.

28. Install both secondary chain tensioners and tighten bolts to 21 ft. lbs. (28 Nm).
29. Lubricate the idler sprocket bolt washer with oil and tighten bolt to 25 ft. lbs. (34 Nm).
30. Remove all three locking pins from tensioners. Do NOT manually extend the tensioner ratchets. This will over tension the chains.
31. Prevent the engine from rotating and tighten the camshaft sprocket bolts to 90 ft. lbs. (122 Nm).
32. Rotate the engine two full revolutions. Verify alignment of all timing marks:
a. Primary chain idler sprocket: dot at 12 o'clock
b. Primary chain crankshaft sprocket: dot at 6 o'clock
c. Secondary chain camshaft sprockets: V8 marks at 12 o'clock
33. Lube the chains with clean engine oil.
34. Check idler gear end play. It must be 0.004-0.010 in. (0.10-0.25 mm). If not within spec, replace the idler gear.
35. The remainder of the procedure is the reverse of removal.

see Fig. #4 of 5: Resetting the secondary chain tensioners: vise, insert lock pin (2), ratchet pawl (3), ratchet (4), piston (5)-4.7L engine

see Fig. #5 of 5: Installing the timing chains: special tool 8515 (1), primary chain idler sprocket (2), crankshaft sprocket (3)-4.7L engine

INSPECTION - CHAIN GUIDES 4.7L ENGINE

Chain Guides (4.7L)
1. Check for grooves. Replace parts if grooves are more than 0.039 in. (1 mm) deep.



Fig. #1 of 5: Timing chain assembly-4.7L engine





Fig. #2 of 5: Insert a pin to hold the primary chain tensioner-4.7L engine




Fig. #3 of 5: Crankshaft position sensor (1) and camshaft position sensor (3)-4.7L engine




Fig. #4 of 5: Resetting the secondary chain tensioners: vise,
insert lock pin (2), ratchet pawl (3), ratchet (4), piston (5)-4.7L
engine





Fig. #5 of 5: Installing the timing chains: special tool 8515 (1), primary chain idler sprocket (2), crankshaft sprocket (3)-4.7L engine