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found this hose - the one wrapped in white tissue - broken at one end so I taped it up with electrical tape.
I will take it in to be replaced but was wondering what it is.
Could this be the cause of my check VSC/check engine light ?
That would be your fuel line. Electrical tape will not hold the gasoline leak for very long. Please be very careful because gasoline can drip onto the exhaust manifold located below the line and present a fire hazard. This is not a likely culprit for your check engine light.
thank rkw. I never noticed any gas leaks under the car or have smelled gas at any time. I am thinking what has broken is a rubber protective hose that surrounds the metal fuel line.
The reason I asked about the check engine/VSC light is because it's now turned off after this hose "repair" I also disconnected my battery for 10 minutes while I taped up the hose.... so I am sure the CEL light will go back on after a few miles ! damn !
Amazing, thanks for asking the question, I always wondered what that was for myself....when you say broken, do you mean the rubber outer covering has pulled back? I believe that's how mine looks, and no fuel leaks. I think of it like the lines running from the evaporator to the condenser in a central AC unit, usually the installer has insulated those pipes but over the years, the insulator starts to deteriorate, but the piping is still intact....(I could be wrong). Will see if I can post a pic of mine this weekend...
look at the 3rd pic in this thread, that's exactly how mine looks...so I guess I'm not that concerned (or should I be? lol)
The black outer sleeve is a heat-shield material to help keep the gasoline cool to prevent vapor lock. Small gaps at the ends should not significantly impact its effectiveness to insulate the fuel line.
Here's what the repair manual says about P0420 and P0430.
If P0420 and P0430 are the only two DTC's, I would check for leak in the exhaust system first. The LS430 has two front catalytic converters and a single rear one. The Bank1 and Bank 2 exhaust pipes join together upstream of the rear catalytic converter, and then split back out into 2 banks down stream the rear catalytic converter. These "Y" exhaust junctions are known to spring a leak and cause these DTC's.
Also what is the mileage on your car. Higher mileage cars sometimes have deteriorating converters and are very expensive to replace. But where there is a will, there is a way. So, we can trick the ECU into thinking the converters are fine. So if it comes down to you needing converters let me know before you go that route and I can suggest a simple cost-effective solution.
Also what is the mileage on your car. Higher mileage cars sometimes have deteriorating converters and are very expensive to replace. But where there is a will, there is a way. So, we can trick the ECU into thinking the converters are fine. So if it comes down to you needing converters let me know before you go that route and I can suggest a simple cost-effective solution.
Car is going into the shop tomorrow. The car has 130,000 miles. Have always run 91 Shell gas. I sure hope its an exhaust leak and that the catalytic converters are OK.
Tricking the ECU into thinking the converters are fine if they are not may get rid of the dash light, but it wont fool the smog test ..... which will prevent the car from being licensed in Ontario, Canada where I live
Small exhaust leaks are difficult to find. Here's a youtube video of a common method used to detect small leaks. This method requires the use of a shop vac.
With the engine off, connect the outlet of your shop vac, with duct tape, directly to one of the tail pipes (seal off the other tail pipe) and blow air into the exhaust system. Use a spray bottle of soapy water and spray throughout the exhaust plumbing. If there's a leak, you will see soap bubbles.
08-24-17, 06:55 PM
whats this hose for ???
