ZX2 run rough, choking out, replaced coolant temp sensor and ran great for an hour
Hey everybody! I posted yesterday about my ZX2, but went and had codes read....
. I had been having problems with the car choking out and smelling like fuel. I changed several things such as spark plugs, air filter, pcv valve, ignition coil...with no change in operation. Then I changed the coolant temp sensor yesterday, and the car ran great for about an hour....then started choking out again and died when I got home and hit the gas in the drive way. Now I am having the same problems again. I took to Advance Auto and they read the codes. They are as follows: number 1 misfire, number 4 misfire, crankshaft sensor (A or bank 1, or single cylinder), mixture too rich.
I think I have the translation right. I never had the cranshaft sensor code before...that is something new. I am wondering if the crankshaft sensor reading is a false reading, because of the mixture being to rich and the car operating funny. If the sensor reading is true...i think I know what that entails, and it probably means the car is done for me....Any info would be appreciated. Thanks!
. I had been having problems with the car choking out and smelling like fuel. I changed several things such as spark plugs, air filter, pcv valve, ignition coil...with no change in operation. Then I changed the coolant temp sensor yesterday, and the car ran great for about an hour....then started choking out again and died when I got home and hit the gas in the drive way. Now I am having the same problems again. I took to Advance Auto and they read the codes. They are as follows: number 1 misfire, number 4 misfire, crankshaft sensor (A or bank 1, or single cylinder), mixture too rich.I think I have the translation right. I never had the cranshaft sensor code before...that is something new. I am wondering if the crankshaft sensor reading is a false reading, because of the mixture being to rich and the car operating funny. If the sensor reading is true...i think I know what that entails, and it probably means the car is done for me....Any info would be appreciated. Thanks!
Last edited by myndsai; Oct 21, 2010 at 09:17 PM.
Something is telling the computer to increase fuel to the engine. There are many things that could cause that. If the oxygen sensor is sending a lean signal to the computer the result will be to enrichen the injector on time , therefore too much fuel to engine, Check all the vacuum hoses. Also possibility of problem with fuel pressure regulator. I wouldn't go replacing all these parts without being reasonably sure of them being defective.
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