QuestionQUESTION: Thanks for taking my question! I don't hear the buzz sound from fuel pump when ignition is on before cranking. Therefore, I need to launch 3 cranks or more to get it started; once it's running, everything is fine.
And you can start right up again. However, it would reoccur after a long parking period such as overnight. I checked the Haynes manual and learned that there's a "circuit opening relay" that controls the initial pressurizing. What would be the possible cause for this problem? and where is it? Your assistance is appreciated.
-Willie
ANSWER: I need to kmow what year/model it is to help locate this relay.
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QUESTION: Thanks for taking my question! I don't hear the buzz sound from fuel pump when ignition is on before cranking. Therefore, I need to launch 3 cranks or more to get it started; once it's running, everything is fine.
And you can start right up again. However, it would reoccur after a long parking period such as overnight. I checked the Haynes manual and learned that there's a "circuit opening relay" that controls the initial pressurizing. What would be the possible cause for this problem? and where is it? Would it be the cold start injector issue? Your assistance is appreciated.
-Willie
ANSWER: I'm sorry, I asked you for the year/model but you already gave it to me, to answer your question about the cold start injector issue, it could very well be that, I remember that this was a common problem, try replacing the cold start injector time switch located on the the thermostat housing. The circuit opening relay is what turns the fuel pump on, if it was the problem the engine would not start at all.
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QUESTION: Thanks Ted; but the issue still persists. I checkd the time switch which is 35 ohms while ocld, and 53 ohms when hot. The circuit opening relay is also within all specs. The only bad one is the water temp sensor which sometimes cause the gauge to fluctuate when hot. I realy have no idea what went wrong....
AnswerI recommend connecting a fuel pressure gauge to monitor the fuel pressure, after turning the ignition off the fuel pump pressure should not drop, a small drop in pressure is ok but it should maintain at least 20psi even after sitting for a long time, the fuel pump has a valve that keeps the pressure intact for easier starting after the engine is off for an extended time, if the fuel pressure drops with the engine off after a while then the fuel pump should be replaced.
