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Po171 code comes up but van starts runs okay for about half minute then starts to run rough and stalls but if i pump the gas it will run for about a couple of minutes and stalls out but if i try to start it again right away it will run ruff from start then stall out 1996 grand caravan Jerry thanks.plus it seems as if the rain makes the problems worse.
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Using excessive fuel cleaner can damage injectors and the fuel pump - sounds like your problem is the fuel pump bearings, and you will probably have to have it replaced.
I Think Your Problem Is Still With The Fuel Supply,Have You Changed all Fuel Filters,Follow All The Fuel Lines Make Sure There Are No Kinked Fuel Hoses,Some Times You Find Small Filters In The Top Of The Fuel Injectors. Hope This Helps
Sounds like you got some bad gas. Be sure and let the station know right away. They may be on the hook to pay for repairs. Take the van to a shop and have the computer checked for trouble codes. The gas tank and lines may have to be flushed.
If the speed sensor code is coming up change it. the sensor went out on my truck and it would die when i was slowing down and hit the clutch to downshift
signs of a bad fuel pressure regulator. the vehicle runs rough, the engine will not start usually in the mornings. many times engine starts but stalls shortly after starting. a bad regulator can result in fouled plugs. black soot on plugs, blake smoke from tailpipe, running rough, stalling. you could have residue in fuel tank and need to change fuel filter again. have a very good day !!
maybe your iac valve is not working? it takes place of a choke or temp sender to computer could be bad which controls t I.A.C. known as the idle control valve,do you have any codes?
code 43, i would expect with running rough but that's not the cause , its a result ,if the system detects noise (knock) it will try to compensate by retarding the timing to save the motor , built in self preservation , i hope your not running on 2 year old gas , i'd be amazed its even running at all , gas varnishes up bad enough in 6 months to 1 year , i suggest getting some fuel additive in there to stabilize and clean the fuel system , or have it drained and start over with fresh gas and go from there . cheers .
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