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Mar 14, 2008 | 10:27 AM

#16

Conanski

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Joined: Jun 2006

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From: Ottawa, Ontario

Quote:

Originally Posted by 88PONY

well new computer and light is still on. i don't get it.

It's soooooooo hard to get good help.

Do yourself a favor, don't try to guess what is wrong, pull the codes.. its a simple operation needing only a paperclip and the ability to count flashes. Go here to see how.. www.fordfuelinjection.com/?p=13

Mar 14, 2008 | 10:35 AM

#17

88PONY

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From: Indio,California

i got code 33 and 61

Mar 14, 2008 | 12:33 PM

#18

Virto

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From: Des Plaines, Illinois

33 EGR Not Opening or Opening Not Detected

61 ECT sensor is less than the Self-Test minimum of 0.2 volts

Try cleaning the crap out of the EGR and making sure all the connections are sound. Make sure the coolant sensor isn't all corroded and replace if required.

Any half-wit mechanic can see that those AREN'T problems with the computer. At worst, there's a problem in the wiring from those sensors TO the computer...but chances are after 25 years, the truck just needs some new sensors and a new EGR.

Mar 14, 2008 | 01:21 PM

#19

Conanski

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Joined: Jun 2006

Posts: 31,930

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From: Ottawa, Ontario

Quote:

Originally Posted by Virto

Any half-wit mechanic can see that those AREN'T problems with the computer. At worst, there's a problem in the wiring from those sensors TO the computer...but chances are after 25 years, the truck just needs some new sensors and a new EGR.

No kidding.

A broken vacuum line could also prevent the EGR valve from opening..

You can test the ECT with a multimeter and a mug of hot water, the main page at fordfuelinjection has test proceedures for all the major sensors and actuators.

Mar 14, 2008 | 05:22 PM

#20

88PONY

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From: Indio,California

ok the truck has new egr tps and iac sensors. im gonna go replace the coolant temp sensor now and see what happens. your right it is kinda old.

Mar 14, 2008 | 06:36 PM

#21

tseekins

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Joined: Jan 2008

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From: Maine, Virginia

Quote:

Originally Posted by 88PONY

well new computer and light is still on. i don't get it. i think theres a bad ground or something somewhere...

I had this problem on my '88 F150 5.8 4x4 and I replaced the processor at the recommendation of the ford tech. I bought a remanufacturered unit from Western Auto when they were still in business.

The processor may have been bad, we'll never know. I found a chaiffed injector wire under the intake manifold that was shorting everything out. After re-insulating this damned wire, my truck ran fine and h as been running fine ever since. This all happened in 1997. You should go hand over hand on every wire under the hood.

Tim

Mar 14, 2008 | 07:55 PM

#22

88PONY

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Joined: Sep 2007

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From: Indio,California

ya, if its nice tommorow im gonna remove the upper intake and take a look. its gotta be something stupid. i was told these trucks get bad vacumm leaks under the upper intake.