Question about Mercury Cars & Trucks
Both of them would be under the hood in the fuse/relay block. But if it keeps starting, wouldn't be the pump circuit. The only thing it might be that is fuel related is if the pump is tired and weak, and unable to put out proper pressure. So don't worry about the relay or fuse, but have the fuel pressure checked. Autozone and others will loan out fuel pressure gauges for a returnable deposit.
If pressure is correct to specifications (should be in the 40-50 psi range, as a guess), probably not a fuel problem, although you haven't yet ruled out the injectors. But leaking or clogged injectors would have been a long running problem, and if the condition just started, it probably is not an injector problem. I would be more inclined to look at a problem in the ignition system (spark plugs, or plug wires), or in the computer controlled idle. Have you cleaned out the throttle body and the passages for the idle air control?
You also need to check for possible trouble codes.
Posted on May 06, 2017
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Posted on Jan 02, 2017
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