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07 pacifica...no power

4K views 2 replies 2 participants last post by  RIP 
#1 ·
3.8l...no acceleration at all. changed crank pos sensor. no help.
 
#3 ·
Wrong forum but ....ok. My first thought would be fuel delivery. Is fuel pressure where it should be? On a 3.8 in a Caravan it should be at 55 psi =/- 5. Since 07 Caravans don't have a filter I'll say you don't (??). Connect a fuel pressure gauge and check the pressure. Are the injectors clogging? Use a cleaner or have a shop clean them. Next thought? Clogged cat. Connect a vacuum gauge. Run the engine up to 2000 rpm and hold it there for 2 minutes. If vacuum slowly drops the cat converter may be clogged or partially clogged.
 
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