Remove this ad

Lead

Jul 25 11 7:28 PM

Tags : :

Heres a strait answer strait answer about the trouble code po470=exaust preasure sensor.What is it?what part do i need to change? <_<Maybe a air hose,EGR Valve,Or the actual sensor(one w/mitubishi triangle on it)Or map sensor.
Quote    Reply   
Remove this ad
Remove this ad

#1 [url]

Jul 26 11 11:09 AM

all I can find in my records is that P0470 is called out as "For reference only; Mazda DTC not used by Ford NA P/T (North American Powertrain)". Sorry.

Ford does use that DTC in diesel PCMs, but not gas.

Quote    Reply   
avatar

iceracerdude

Ultimate Member

Posts: 2,121

#2 [url]

Jul 26 11 2:52 PM

Do you know what the egr valve is, and if so do you know where it is?
The code might be being set as a result of the position sensor on top of it, or if your car is 96 or later the egr boost sensor comes into play. To find that you'd follow the vacuum line from the egr valve to it mounted up high about in the middle on the firewall right by the wiper motor. That being said, the sensor on it, or the actual egr valve may simply be gunked up and not be able to move the sensor smoothly. The one on the firewall that looks like a traditional map sensor is not serviceable, but the vacuum lines are!
if you have a haynes manual you'd be looking at page 12-23 for 94-95 aspires or page 12-24 for later years for those wire colors for part conformation.

The precision is the religion for me!

Quote    Reply   

#3 [url]

Jul 27 11 7:13 PM

Thank you!I have removed and cleaned the egr,but have not tested thr sensor on top.I will try and change the sensor the hose from egr is conected to.I have replaced the hose already.Sure hope that works,the check engine light drives me crazy cuz i may not know if their is a real problem. fordaspire/icon_horns2.gifP.s,love that mpg tag,wish myne got 40+

Quote    Reply   

#5 [url]

Aug 14 11 4:09 PM

Yes is does have to do w/egr valve.yet the egr may not be the problem.I found a pinched vac line,replaced it and cleaned out the egr with no luck.It must be the sensor the vac line is conn to on the fire wall.But all parts stores do not list this as the ex.pres.sens.It is called a boost sens or somthing.I just need a strait answer!

Quote    Reply   
Remove this ad
avatar

iceracerdude

Ultimate Member

Posts: 2,121

#6 [url]

Aug 14 11 5:59 PM

What they're calling it is correct, remember having a book can be helpful. So feel free to get that replacement part but remember, cleaning the actual egr valve didn't guarantee that that sensor on top of it is working correctly. I guess the only way to find that out would be to replace one, the other, or both one at a time. Confide yourself in knowing you'll still be money ahead because you're not paying someone else to do this, so if you have to ultimately replace them both to resolve the issue you'll be "even up" at worst. The truth of the matter is most shops, but not necessarily the ford dealer, are guessing at something like this anyway, but not revealing that to you ever. But will still charge you fully to be the "guessers" or "replace men" as opposed to the "repair men" we hope they really are. The ford dealer of course, who has actual experience with this exact problem, has of course abandoned you, us, and the Aspire.
If you don't believe what I've told you, stick around and look/search the horror stories about different members trying to get front wheel bearings done correctly. Real disasters there, with real additional, unforseen costs to go with them. That my friend, is as straight an answer as you're ever going to get.
Good luck, and feel free to do a write up on the ultimate solution.

The precision is the religion for me!

Quote    Reply   

#7 [url]

Aug 20 11 9:06 PM

Thank you for the tips and honesty!My dad was a mechanic,and im an electrician so i should be able to figure this one out,just need time and money.Short on both latley!Peace!

Quote    Reply   

#8 [url]

Sep 30 11 6:07 PM

Well the culpit was the EGR valve,but now its spitting smoke and wont idle with A/C on.IAC maybe?The serch for idle happieness continues!The CAT was clogged,so i guttet it,next-o2 simulator....do it your self kit?

Quote    Reply   
avatar

nerd racing

Grand Master Member

Posts: 4,219

#9 [url]

Sep 30 11 7:49 PM

rip out that resistor chip....

"In a perfect world all the geeks get the girls"

1995 Ford Aspire 3 Door Black, (B8 F-series)---> RIP
1997 Ford Aspire 3 Door Teal ---> Sold '08
1996 Ford Aspire 5 door Green ---> Parted wouldn't hold her oil
1994 Ford Aspire 3 door Red ---> Former BP, V6 Swapped... Rusted Out...
1995 Ford Aspire 5 Door Blurple --> Sold '11 No Room...

1989 Ford Festiva L 4 Speed Carby Model --> Soon to be an Abomination!
1990 AWD 5 Speed Mazda Protege Black -->(BP GTX Trans) Daily Driver/Donor Waiting to Happen... Soon to be BP+T


Facebook Me!

Quote    Reply   
Remove this ad
Add Reply

Quick Reply

bbcode help