My 98 disco has about 140k on it and has been running pretty good. The other day I took it to the car wash and sprayed off the underside to rinse off some salt from a recent snow storm. Since then when the vehicle gets hot it won't hold an idle and stalls. Before it warms up it idles just fine. Check engine light is on and im getting p1447, p1193, p1178, p0451. I just pulled the MAF sensor and cleaned it with CRC and check for any vacum leaks, checked the air filter, tapped on the evap purge valve, and checked the gas cap. Any input would be greatly appreciated.

 

I sprayed under my hood one time shortly after I bought my 97 DI. It ran terribly for a few hours. I will never do that again. Later found out that the ECU is not well protected and tends to get wet and result in all kinds of problems.

 

Your ECU got water inside it.
It is on the passenger fender infront of the washer solvent resevoir.
Unhook the battery.
Remove the ECU.
Take it inside the house and dry it out.
Using a clear silicone reseal it and put it back together.
Make sure it is completely dry before you put it back together.
Put it back in the truck.
You are not good to go.

 

thanks for the help, ill try that when i get home from work tonight. its been since saturday and its still not idleing. really hope this does the trick