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EGR and tps failures-is it driveable?

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EGR and tps failures-is it driveable?

 
Old 10-22-2018, 10:32 PM
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Default EGR and tps failures-is it driveable?

My 1992 f150 5.0 aod automatic is not idling. It is giving code for egr and throttle position sensor errors. I need to drive it about 6 miles (up a steep grade) to get it to a location where I can work on it. I was wondering if I can drive it if i keep throttling it to keep it running, or will I have big issues trying to get it up that hill? I just know it won't idle and is hard to start when it dies. I haven't driven it with the TP error so I am not sure if it will run ok beyond idling. Any input appreciated.
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Old 10-22-2018, 11:13 PM
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put the truck in nuetral, and rev it up for a few minutes and see how it runs
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Old 10-23-2018, 11:49 AM
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Don't pick a word or the name of a part out of a code definition - read, understand, & post the WHOLE thing, for each code.


(phone app link)


This caption explains how to test the TPS:


(phone app link)


The NEXT one explains most of the others. This one explains the EGR system:


(phone app link)


You can't fix anything by revving the engine.
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Old 10-23-2018, 08:29 PM
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Originally Posted by Steve83 View Post
Don't pick a word or the name of a part out of a code definition - read, understand, & post the WHOLE thing, for each code.


(phone app link)


This caption explains how to test the TPS:


(phone app link)


The NEXT one explains most of the others. This one explains the EGR system:


(phone app link)


You can't fix anything by revving the engine.
no you cant fix anything by reving the engine. i said that because hes hasnt ran it passed idle since the issue started
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Old 10-24-2018, 11:06 AM
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Yeah I ran it past idle, I tried to drive it but it kept dying.
Some questions on the EEC. Does the EEC have to learn things after power disconnect, like a newer car? Such as Fuel/air mixture and things like that.
I don't believe that it does but I thought I would ask. This problem started after I unhooked the battery. Actually, I drove it for about 10 miles after that and it was fine.
All I have done to it since I bought it last week is change the oil, added tranny fluid, and changed the spark plugs. Shouldn't have triggered any codes...
I am going to test the TPS this weekend when I have a chance. 332 & 122 are the codes I am getting. Runs fine with the 332 code, not driveable with the 122 code.
Thanks for all your advice.
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Old 10-24-2018, 10:19 PM
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Yes, the EEC forgets how it has adapted to the aging engine when the battery is disconnected for >2min. But it will still run while it's re-learning those adaptions (over the next 20~50 miles).

Any time you mention a code, post the number and the COMPLETE definition so we don't have to go look them up.

The trans in a '92 is distinctly the E4OD - not the 4R100.


(phone app link)
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Old 10-27-2018, 12:28 PM
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I changed my TPS and the truck runs fine now. The check engine light still comes on. I am still not 100% sure of how this works. Will it go off after the 40
warm up cycles? I need to go have it smog tested so I can register it, but it won't pass with the check engine light on. Should I unhook the battery and reboot the
EEC? I am still getting the same codes as before, 122 (oc) TP circuit below minimum voltage and 332 EGR valve opening not detected. Will these codes go away
after a certain period of time if everything is fixed? Or is it signifying that I still have a problem?

Thanks for your expertise.
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Old 10-28-2018, 01:25 PM
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Read the caption of the first thumbnail I posted.
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Old 10-28-2018, 05:27 PM
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Originally Posted by Steve83 View Post
Read the caption of the first thumbnail I posted.
I have read it many times, I do not see an answer to my exact questions.
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Old 10-28-2018, 11:37 PM
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Did you follow the link to the complete procedure, and read that? That caption is a STARTING point - not an end.
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