Aerostar isse(s)

Nov 14, 2006 4 Replies
S

Hello Everyone,



Well, let me get right to it:



1993 Aerostar, 3.0L, 252k

-Fuel gauge stopped working. Sometimes reads full after it's just been filled, otherwise it almost always hovers around the 1/4 mark. Very occasionally will jump up to 3/4 or 1/2 but after a few minutes will drop back to empty or 1/4. Noticed that it doesn't change when driving over bumps, significant or otherwise.



-Very recently the van has started "chugging" after passing the 70km/h mark. Sporadic, inconsistent lurching, but always after accelerating beyond 65- 70 km/h. Kinda worrisome on the highway. Recently changed the plugs, air-filter, and oil. No difference. Used a couple of those "fuel-injector-cleaner-in-a-can" the last few fill-ups, but to no avail.



Any and all suggestions/tips most certainly welcome. Thanks, Mac


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T

Fuel pressure problem...: one, two, or all three...: fuel pump, fuel filter, & pressure regulator.

You are right in the sweet-spot mileage-wise for any of these failures.

Rob

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S

Thanks for the reply. Is it an issue that would, literally, start all of sudden like it did? And are these problems that, say, my brother and I could tackle ourselves over a weekend with a Haynes manual?

Thanks

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T

They could have been building up & compounding. Get the Ford service manual on CD from eBay and a fuel pressure meter from Autozone. Haynes manuals are lacking.

-Fuel filter - start here. Replace. 1/2 hr. Check pressure - look for upwards of 35psi. 20 or below will show up as the issues you present.

-Pressure regulator. Does pulling the vacuum line affect pressure? If not, it's stuck. 1/2 hr. to change, check pressure again.

-Fuel pump - Could completely die out w/o warning - and may be on it's way. 1.5-3 hrs., check pressure again.

Rob

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