Dodge Caliber Forum banner

1 - 3 of 3 Posts

·
Registered
Joined
·
257 Posts
Discussion Starter · #1 ·
Today I had the engine running, and hears a hissing sound from the battery area. I was trying to feel around for a rubber vacuum line, but couldn’t find one. But the sound stopped when I moved the battery insulation.

Yeah, what‽

There is (I think) a plastic evap line for the fuel system running under the filter box, next to the battery, and down to the front of the engine.

17010


Where it goes next to the battery, it touches the battery. I couldn’t tell if the hole was caused by rubbing, or if battery acid ate it.

17011


I am no where near a parts store. I ended up making a temporary repair by cutting the line in half, then using heat-shrink tubing to reconnect the line back together.

Without getting a whole new line, I’m not sure this repair will hold for long; I’m guessing there’s fuel vapour, definitely heat, just “marine grade” heat-shrink tubing.

But, now that it's put together, the idle has gone up from ~600 to >700, almost eliminating the rough idle. The car feels like it has more power and has a faster response time from pedal stomp to forward motion.

So maybe, if someone has an idle problem, it could be a hole in this line that needs addressing.
 

·
Registered
Joined
·
73 Posts
Nice catch. Can you check using OBD what vacuum negative pressure you have at idle at fully warmed up engine? I want to compare with mine, which started to be just a bit rough. So I don't know if I should go for vacuum leaks hunt or is just the engine worn out.
 

·
Registered
Joined
·
257 Posts
Discussion Starter · #3 ·
I looked for a vacuum reading on my little Actron CP9575 scanner, but it doesn't seem to have that ability in View Data.

A rough idle (usually in drive/park, but not in reverse) can also be a bad rear engine mount - I also have that issue, but just too lazy to crawl under the car.
 
1 - 3 of 3 Posts
Top