Hi Everyone and Happy Holidays,
Earlier, I sent an Email on some tests that we ran on the ignition circuit of our 1992 Dodge Shadow. Like I said in the other Email, the car left us on the side of the road the other night.
This is what is going on:
The problem is that the other evening; after being parked at a store for a few minutes, the car wouldn’t start back up – all of this was sudden and without warning. The next day; we took the air cleaner off, and while watching the injector operate (as the car was trying to run) – it was spraying erratically, splashing fuel, etc. Thinking the problem was fuel related and since we had already replaced the fuel pump earlier this year – we replaced the one fuel injector and pressure regulator in the throttle body. Now the fuel being sprayed is a lot smoother, straighter, and more controlled – but the car still runs the same – terrible.
Basically, the car will not start unless the gas pedal is pressed. When the car does start it runs extremely ruff and keeps trying to die. Next, we did some checks on the ignition system – which led to the earlier Email (that Email is in the electrical section of this site).
A little while ago; we hooked up a fuel pressure gauge and while the car was trying to run – the fuel pressure held at about 40 psi, but as the car died or was turned off the gauge needle immediately fell to 0 psi. The fuel pressure was the same with and without the fuel filter installed.
I guess the most aggravating thing is that earlier this year we had to do a bit of work on the car. The last thing we done was replace the oil pump. Some who visit this site often, may remember; we posted questions about the oil light coming on after replacing the oil pump - but in the end; when we replaced the oil pressure sending unit the light went off and stayed off; so-far-so-good. But here’s the kicker; the fuel pump was one of the first things we replaced after it went out. And it has worked fine - in fact the car has been running fine for some time now.
Sense the fuel pump isn’t even a year old yet, is it possible that the pump is out again? And if the fuel pump has gone bad again and this quick – how is this possible? Like a lot of people on a tight budget, we got the fuel pump from AutoZone.
We also gathered some computer codes by using the key cycle method; the codes are: 12, 13, 15, and 55
Thanks for everything and again Happy Holidays to all
Saturday, December 24th, 2011 AT 10:15 PM