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Aargh!! Help please..... 200 1991

posted by  someone claiming to be R Wagner on  Wed Nov 14 15:23 CST 2001 [RELATED]

My 240 is running fine, but....

It is showing codes 221 and 231 and the check engine light is on because of these codes. I have replaced the fuel pressure regulator and the O2 sensor. I have unplugged the battery to reset the computer a couple of times. All this and it runs fine. The AMM checks out ok as far as the resistance ckecks in the Haynes and Chilton. Are there any other checks I can do on it. If the car is runnuni and I unplug it, the car almost stalls which leads me to believe it is ok. Is this true?

Another question, I have wanted to check the fuel pressure but cannot find the correct size fittings to connect a pressure gauge. What size fitting is the fuel line to fuel rail (thread size) or where can I get a T to connect the gauge? Am I headed in the right direction? Everything I can think of checks out ok, but I am probably missing something stupid. BTW the car has 223,000 miles pretty well maintained.

Thanks guys and gals,

Ralph





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