Chasing ghosts
Update, now have gone through 3 TPS in six months and have a cylinder 3 misfire that happens right before the sensor goes out. All 16 lifters we're replaced but not values. We have switched things from cylinder to cylinder but 3 keeps misfiring. Could my TPS problems be from the misfires, I have a mechanical throttle body.
Currently have a 2004 Dodge ram 1500 with a 4.7L motor in it. Need some help hunting down my ghost, both lifters was replaced but was extremely dirty, even though the new lifters now tick as well, when started on a cold start. Replaced the TPS sensor, map sensor, fuel sensor, and the fuel pump. Truck sits in a rough idle at all times and keeps kicking out a code p0303. Don't know where my ghost is can anyone help? |
Pull the spark plug on #3 and take a look.
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Yep, plug #3 is good place to start.
Can you tell us what you mean by "both lifters was replaced but was extremely dirty, even though the new lifters now tick as well." Specifically, what lifters did you replace and why? Are you assuming your tick is caused by lifter(s)? |
Try switching the coil pack or ignition wire to another cylinder. Same thing with the spark plug, So #1 move the coil too and #5 move the spark plug too. Does the misfire stay on number 3? If it doesn't move to another cylinder. Do a dry and wet compression test on the cylinder. If you replace the lifters, What about the rockers? Could also be a camshaft starting to go flat.
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Originally Posted by jrsick
(Post 3543706)
Yep, plug #3 is good place to start.
Can you tell us what you mean by "both lifters was replaced but was extremely dirty, even though the new lifters now tick as well." Specifically, what lifters did you replace and why? Are you assuming your tick is caused by lifter(s)? |
You sure you don’t have a bent pushrod? Did you soak lifters in oil before install?
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Originally Posted by Icepaw14
(Post 3543697)
both lifters was replaced but was extremely dirty
Originally Posted by 95RAM360
(Post 3544294)
You sure you don’t have a bent pushrod? Did you soak lifters in oil before install?
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Originally Posted by 95RAM360
(Post 3544294)
You sure you don’t have a bent pushrod?
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Originally Posted by 95RAM360
(Post 3544294)
You sure you don’t have a bent pushrod?....
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