Ram 1500

Moisture may collect in PCV system and freeze in cold climates on Dodge Ram 1500

Problem Description and Possible Solution

The 3.7L V6 and 4.7L V8 in very cold climates (below freezing temperatures) moisture can collect in the Positive Crankcase Ventilation (PCV) system and freeze. This will cause various drivability problems and there are revised PCV system components to repair this concern.

Problem Data
RepairPal Verified
Average mileage: 128,200 (60,000–215,000)
Exhaust & Emissions affected: 4.7L V8
5 model years affected: 2002, 2003, 2004, 2005, more2006
15 people reported this problem
Viewing 1 - 6 of 6 comments
I was checking my fluids this past weekend and to my surprise the "mayonnaise" that filled the oil fill tube and cap gave me quite a shock. My heart sank simply because I have already replaced the engine in this truck once and don't see it being worth doing again. Hopefully the things that I have read here are the "simple" fix compared to another bad motor. I will definitely check into this situation. Thanks for the heads up.
Engine misses or gets jerky when cold and seems to get better as it warms up but never seems to completely disappear. It is more noticeable under a load still trying to figure it out.
When the weather gets to freezing temperatures there is a freezing issue and I can not get the vehicle to start. I have changed the pcv valve and the oil I hope this fixes the problem.
I have lots of yellow pudding in my 4.7 L dodge ram oil cap and some foaming on the dip stick...
Only stalls on really cold mornings ( below 0'C Degrees ) at stop lights and surging idle freqently... I was worried about a head gasket being blown untill seeing this...will replace pcv next...i've been adding seafoam to crankcase since i noticed this problem.. plus i cleaned throttle body,iac, replaced tps so far..planning to check for vacuum leaks if pcv doesnt fix it.. ( Canada)347000km
Looked like mayonaise inside oil filler cap. Was afraid it drain into motor oil!! Changed pcv valve poured 5oz. Seafoam down pcv tube to clean. Poured 6oz. seafoam in motor oil. Drove the truck to work change oil and filter. Will definetly watch this a lot closer!! Poor design for sure. Dodge has been around long enough to know better. I geuss?
I live in wisconsin and have had it happen two winters in a row now when it gets belowe zero. oil sprays all out the back of the vehicale what a mess. dealership says all that can be done is change out the pcv valve more often ?????