Odd stalling sympton
Posted: Sat Sep 23, 2017 2:29 am
WE just came back from a long trip back and forth across the Rockies from Kicking Horse to Glacier. This was the first trip after replacing the fuel pump in the front tank of an 89 b190. The pump unit was replaced to correct an problem with stalling under load and usually only when the front tank was in use. We started out from Bellingham on the front tank and had several instances in the first 40 miles when the engine began to stall and several pumps of the gas pedal seemed to correct the issue. It finally stalled out completely as we turned east on Highway 20. For the next two days we drove without problems using only the back tank. We hit a stretch of the Trans Canada Highway east of Golden BC where we had to go to the front tank after a 4 hour delay in traffic as they dealt with a fatal accident. Very soon after the restart on the front tank, the engine stalled. After a half hour cooling off, it worked relatively well for about 9 miles and got us to a gas station where we were able to get gas for the back tank. As we were approaching Lake Louise I decided to try the front tank, and it ran for about 10 miles but stalled again in town. It would not start immediately after that stall when I switched to the back tank, but when it cooled down the back tank got us to the nearest available campsite in Banff. It was late at night and the van's dependability was in question, and the wife was not particularly happy. After looking at options, and hundreds of miles from home, decided not to try and have a shop look at it at great expense and time taken out of the limited holiday time, we decided to go forth only on the back tank. It was a pain because one had to stop twice as often for gas, but 4 days later and three more times across the Rockies and back to Bellingham we had no problem.
The question is, does anyone have thoughts on how one the problem would occur only in the section between the front tank and the engine, while the line from the back tank seemed to get the fuel to the engine with no problem. The problem seems to be associated with heat, and temporarily cured by cooling? I am assuming that the replacement pump is functioning properly. I guest my best guess it that the switching mechanism has a problem in the front tank line which restricts the flow in a manner that is exacerbated by heat.
I did check the forum and saw several discussions but none seem to match my diagnosis
Any fresh ideas or similar experiences?
On this trip I caught a glimpse of a 2 B190s, at Lake Louise on August 31, but was not able to get a better description than one was older and had a orange and brown trim, while the other had blue trim, appeared to be a newer version. I could have sworn that the logo was B160, but I was tired and driving at the time. I am going to try and log in the B190s I see. I was in Okanagan country.
The question is, does anyone have thoughts on how one the problem would occur only in the section between the front tank and the engine, while the line from the back tank seemed to get the fuel to the engine with no problem. The problem seems to be associated with heat, and temporarily cured by cooling? I am assuming that the replacement pump is functioning properly. I guest my best guess it that the switching mechanism has a problem in the front tank line which restricts the flow in a manner that is exacerbated by heat.
I did check the forum and saw several discussions but none seem to match my diagnosis
Any fresh ideas or similar experiences?
On this trip I caught a glimpse of a 2 B190s, at Lake Louise on August 31, but was not able to get a better description than one was older and had a orange and brown trim, while the other had blue trim, appeared to be a newer version. I could have sworn that the logo was B160, but I was tired and driving at the time. I am going to try and log in the B190s I see. I was in Okanagan country.