2000 dodge caravan, 3.3, no start, new cam sprocket and timing ch
I'm 99.9% sure I have the timing chain cam sprocket (6 o'clock) and crank gear (12 o'clock) lined up right. The new cam sprocket has new design, thicker hub, required different thrust plate. I'm wondering if the new spocket has the wrong pick-up point. I got a code 1390 (misfire). I'm also wondering if the new cam sprocket hit the sensor.
Anybody familiar with these redesigned sprockets or any adjustment to the sensor?
Also kinda wierd, when I first re-attached the battery cable after reassembly and turned the key, all of the relays went crazy for like 5 minutes. It finally settled down.
Get minor blow back from intake when I stop cranking. Van ran before installation.
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Re: 2000 dodge caravan, 3.3, no start, new cam sprocket...
There is a very good possibility that the timing is 180 degrees out. Verify that the number one cylinder is firing on the compression stroke. I 've had this happen to me in the past when I first started building performance engines. The "School of Hard Knocks" was a very tough teacher, if ya know what I mean.
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Make sure you are on the compression stroke. At TDC of compression stroke, the rotor should be pointing to number 1 on the cap. Either you are on the exhaust stroke, or the distributor is 180 degrees off and needs to be reset.
Not sure but if doing belt yourself I will give you important tips. 1) before removeing T/Belt set engine to TDC nr 1 there should be marks on the crank and cam (s) gears that line up with a mark on the block / head. 2) prior to removeing tension to belt get liquid paper & mark cam gear(s) & crank gear to point on block / head. 3) mark T/Belt to cam(s), crank, balance shaft if fitted. 4) release tension & remove belt. 5) transcribe marks from old belt to new belt & make sure correct amount of teeth. 6) fit new belt so YOUR marks line up. 7) have tensioner suply presure to belt. 8) turn motor twice by hand to make sure pistons no hit valves 9) Make sure YOUR marks line up if YOUR marks line up it has to be right. 10) Very IMPORTANT if spring tensioner lossen locking bolt again to take up extra slack in belt. 11) tighten locking bolt. 12) put back together.
if you have dohc the 2.7 has 3 timing chains The primary chain goes around the crank sprocket the the water pump and around two intake cam sprockets. The other two chains run around seperate intake and exhaust cam sprockets, to synchronize the intake and exhaust valve timing.
the cam shaft sprockets have marks on them that say" front" and have a hole,, the marks should be up and level on the cams,one cam says in on it and thats intake and one says ex on it and thats exhaust cam,,,the sprockets on the cams have a little cirlce at one of the teeth on each cam these face up,,and line up with the different color links on the timming chain,,,the crank sprocket only goes on one way due to the keyway the the key way faces at the 12 clock position and you will see a mark at the same 12 position on the engine block,, there is also a different colored link for the timing mark on the cranksprocket ,actually its two colored links in a row and they go at the 6 clock position on the crank,,,then put the guides on and the tensioner and set the tension
there will be two highlighted or dotted chain links for the camshaft and one for the crankshaft gear, position cam dot/TDC indicator in the 12-O clock position, the two dotted links should be on ether side of cam dot, turn crank dot to the 6-O clock position and line up highlighted link with dot on crank gear, if timing cover is on, then make sure cylinder 1 is at TDC when the two links are at 12-O clock.
If tensioner assembly is being replaced, install tensioner and mounting bolts. Torque bolts to 28 Nm (250 in. lbs.) .
Retract tensioner if required. CAUTION: The camshaft pin and the slot in the cam sprocket must be clocked at 12:00. The crankshaft keyway must be clocked at 2:00. The crankshaft sprocket must be installed so that the dots and or paint marking is at 6:00.
Place both camshaft sprocket and crankshaft sprocket on the bench with timing marks on exact imaginary center line through both camshaft and crankshaft bores.
CAUTION: The timing chain must be installed with the single plated link aligned with the dot and or paint marking on the camshaft sprocket. The crankshaft sprocket is aligned with the dot and or paint marking on the sprocket between two plated timing chain links.
well not sure exactly why it wont line up use something to turn the crank and cam to appropiate position start sliding crank gear until cam gear is touching then start to push both at same time make sure your crank key and cam pin are bothin place
On many OHV pushrod engines, the crankshaft sprocket is installed on the crankshaft nose and the crankshaft is rotated to position piston #1 at TDC. At this point, a mark stamped onto the crankshaft sprocket is pointing directly upward (toward the camshaft).
The camshaft sprocket is then temporarily bolted to the cam and used to rotate the cam until a mark stamped on the cam sprocket is pointing directly downward (toward the crankshaft). The sprocket is then removed from the cam (without allowing the cam to rotate).
The timing chain is looped over the cam gear, the mark on the cam gear is positioned directly downward, and the chain is looped around the crankshaft sprocket. When the cam sprocket is attached to the cam, the timing marks on the crank and cam sprockets should be pointing toward one another.
there will be two highlighted or dotted chain links for the camshaft
and one for the crankshaft gear, position cam dot/TDC indicator in the
12-O clock position, the two dotted links should be on ether side of
cam dot, turn crank dot to the 6-O clock position and line up
highlighted link with dot on crank gear, if timing cover is on, then
make sure cylinder 1 is at TDC when the two links are at 12-O clock.