Bad Fuel Pump?
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Bad Fuel Pump?
It's me again with the 89 Aerostar that we just got running. Now were hearing a bubbling sound after the fuel pump pressurises. It is also idling rough and when you first take off it idles really rough. Could this be a bad fuel pump, or something else?
Thanks
Jaime
Thanks
Jaime
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From: Sarnia, Ontario, CANADA!
When is the last time you changed the fuel filter? They are like $10 and take 15 mins to replace the first time you do it. If it hasn't been done in the last year just do it. You never know.
-Matt
-Matt
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From: Sarnia, Ontario, CANADA!
I don't know about the bubbling but it would for sure cause it to idle rough. The reason is because it could be stopped up and restricting fuel flow to the engine. I would just change it if I were you. It's pretty easy and cheap to do. Good luck.
-Matt
-Matt
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We will change the fuel filter first and see what that does. Thanks for the suggestion. I cranked the van last night and didn't hear the bubbling, but it does still idle rough.
I will let you know what happens after we change the filter.
Is there a site that gives you step by step directions on how to do things on Fords?
Jaime
I will let you know what happens after we change the filter.
Is there a site that gives you step by step directions on how to do things on Fords?
Jaime
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From: Sarnia, Ontario, CANADA!
You could try doing a search on here. I would recommend buying a Haynes manual. It has most of the repairs in it that you will ever need to do. Only costs $15-20. Well worth it in my opinion. I buy one for every vehicle I have. Good luck. Any more questions feel free to ask.
-Matt
-Matt
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Re: Bad Fuel Pump?
Originally posted by Jaime_K
It's me again with the 89 Aerostar that we just got running. Now were hearing a bubbling sound after the fuel pump pressurises. It is also idling rough and when you first take off it idles really rough. Could this be a bad fuel pump, or something else?
It's me again with the 89 Aerostar that we just got running. Now were hearing a bubbling sound after the fuel pump pressurises. It is also idling rough and when you first take off it idles really rough. Could this be a bad fuel pump, or something else?
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We replaced the fuel filter, the van is still idling rough. We ran the computer diagnostics on it and it came up with code 22, 12 and 11. Code 22 says MAP (vacuum) or BARO signal out of range - MAP. Code 12 says Idle Speed Control motor or Air Bypass not controlling idle properly (generally idle too low) - ISC. Has anyone had these codes come up?
Aero Colorado, we will check your suggestion....thank you.
Jaime
Aero Colorado, we will check your suggestion....thank you.
Jaime
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Can anyone tell me what exactly codes 22 and 12 mean and what I need to check since those codes came up? Haven't yet had the chance to try the fuel pressure regulator, will do that tomorrow hopefully.
Thank you
Jaime
Thank you
Jaime
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MAP location
Jaime, if the MAP sensor in your 89 is in the same place as a '91, it would be located about midway, at the top of the engine compartment, just under the cowl. On my '91 it is enclosed in a dark fiberboard "pocket" held to the upper edge by a cable tie. The MAP sensor rarely causes problems. It is not used as a "sensor" but as an altitude compensation switch. You might however check the vacuum line going to the MAP for leakage or deterioration. Of the two codes, the IAC is the most likely suspect and is a known, frequent source of engine problems.
Last edited by aerocolorado; Mar 25, 2004 at 09:47 AM. Reason: clarity
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Iac
Thanks for the info AeroColorado, I will check that out. We're thinking it's the IAC. We took the plug out of the IAC and the van started idling alot worse and died, then we took the IAC off and cleaned it, put it back on and it idled the same as it did before we took it off and cleaned it. We then pulled the plug out of it again and it idled the same as it did with the plug in. Is this normal? Is there a computer code if the IAC is bad?
Thank you!
Jaime
Thank you!
Jaime
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We've got a Chilton Manual for our van now and it doesn't mention anything about the MAP sensor in the book. It doesn't even have code 22 in the book. Anyone know why that is? We are going to test the IAC tonight, or sometime this weekend. Thanks for all the info.
Jaime
Jaime
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