What is an EVP? (Emission Component)

Maroon 5.0 LX · 09-21-2001, 11:03 AM

Went to the Ford dealer to have codes scanned. They said I need an EGR, EVP and Air Bypass Valve.

Can't find an EVP listed on any of the aftermarket sites. What is the proper name for this thing?

Are there any Ford Parts Dealers on line? I can't find any.

Thanks...

------------------
'89 LX 5.0 - 5 speed. Original Owner
'94 E-150 4.9 Hi-Top Conversion Van

HiFlow5 0 · 09-21-2001, 11:28 AM

did they tell u the codes they pulled or that u just needed those parts?? i'd look into it a little more, maybe pull the codes yourself and see what you com up with

------------------
89 GT AOD w/ shift kit, B&M rachet shifter, Trickflow intake, Crane (E-type) cam, 70Tb, 75MAF, 1.6 Rockers, Pulleys, MAC headers and H-pipe, Dynomax mufflers, K&N, 3 core radiator, white face gauges, custom interior, cobra R rims. 14.9 at 95.07mph with stock 2.73's.

89LX 2.3 Notch, daily beater!
MY89GT

Maroon 5.0 LX · 09-21-2001, 11:44 AM

I got a code 332=Insufficient EGR flow, and a
411=Unable to control RPM during low RPM check.

------------------
'89 LX 5.0 - 5 speed. Original Owner
'94 E-150 4.9 Hi-Top Conversion Van

HiFlow5 0 · 09-21-2001, 01:23 PM

i'd go and just replace the egr for right now. that may be causing the other code to be thrown. the egr has a part to play in exhaust gasses at idle speeds, so i'm thinking thats why you got the 411 code. good luck

------------------
89 GT AOD w/ shift kit, B&M rachet shifter, Trickflow intake, Crane (E-type) cam, 70Tb, 75MAF, 1.6 Rockers, Pulleys, MAC headers and H-pipe, Dynomax mufflers, K&N, 3 core radiator, white face gauges, custom interior, cobra R rims. 14.9 at 95.07mph with stock 2.73's.

89LX 2.3 Notch, daily beater!
MY89GT

PKRWUD · 09-21-2001, 06:43 PM

The EVP is the Egr Valve Position sensor. It is standard practice to replace the EGR and the EVP at the same time, and unless you're broke, it's a good idea.

HiFlow50 has a very good point concerning the IAB code 411. Try replacing the EGR & EVP first, and then clear and retest for codes, both KOEO & KOER (the 411 test is not performed during KOEO). If there's no code 411, you're done. If it does come back, replace the IAB.

Take care
~Chris

------------------
Retired Moderator
MustangNet

My site: JimPorterRacing

RACECAR spelled backwards is RACECAR

HEY !!! Are you ASE Certified ??? If you are, ask me about iATN. The best tool you'll ever have, and it's free !!!

Maroon 5.0 LX · 09-23-2001, 06:46 AM

Thanks for your help and suggestions.

Now, has anyone bought from http://www.fordpartsonline.com ? Their Ford parts prices are almost the same as Auto Zone, NAPA and Pep Poys.

------------------
'89 LX 5.0 - 5 speed. Original Owner
'94 E-150 4.9 Hi-Top Conversion Van

PKRWUD · 09-23-2001, 07:12 AM

I've never heard of them before, but I just checked it out. They have some incredible prices, especially if it's really for Ford parts. Hmmm.

Take care
~Chris

------------------
Retired Moderator
MustangNet

My site: JimPorterRacing

RACECAR spelled backwards is RACECAR

HEY !!! Are you ASE Certified ??? If you are, ask me about iATN. The best tool you'll ever have, and it's free !!!

09-23-2001, 07:55 AM

hey pkrwud i passed on your ase site to afew people to help them out , it is appreciated esspecially to my boy at work with 72 nova, small cam , 3speed hehe , 3.00 to 1 rear end hehe who think's he's going to smoke me hehehehe. he really needed the help. see ya .

------------------

84LX89GT · 09-23-2001, 01:44 PM

I started getting similar codes and had to replace the EVP sensor. Now because the gasket/O-ring is not correct there is "Excessive EVP voltage" so i'm probably going to have to try to hunt down another EVP gasket or use a sealant like silicone to seal it while checking out the output voltage....In other words, alot of work for a stupid problem.

[This message has been edited by 84LX89GT (edited 09-23-2001).]

84LX89GT · 09-23-2001, 01:53 PM

Man, that ford parts online site rocks. THE PRICES ARE CHEAPER THAN MY EMPLOYEE DISCOUNT THAT I GET AT A DEALERSIP BY LIKE 10%!
Thanks for posting that link, now i know where i'm going to buy my parts from.

------------------
Mustang Parts Specialties ripped me off, don't buy from them.
'84 Mustang 5.0 LX
my LX
'89 Mustang GT
my GT

09-21-2001, 11:03 AM	#1
Maroon 5.0 LX Registered Member Join Date: Mar 2001 Location: Southern Maryland Posts: 471	What is an EVP? (Emission Component) Went to the Ford dealer to have codes scanned. They said I need an EGR, EVP and Air Bypass Valve. Can't find an EVP listed on any of the aftermarket sites. What is the proper name for this thing? Are there any Ford Parts Dealers on line? I can't find any. Thanks... ------------------ '89 LX 5.0 - 5 speed. Original Owner '94 E-150 4.9 Hi-Top Conversion Van

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09-21-2001, 11:28 AM	#2
HiFlow5 0 Registered Member Join Date: Mar 2000 Location: Springfield, Ma, usa Posts: 706	did they tell u the codes they pulled or that u just needed those parts?? i'd look into it a little more, maybe pull the codes yourself and see what you com up with ------------------ 89 GT AOD w/ shift kit, B&M rachet shifter, Trickflow intake, Crane (E-type) cam, 70Tb, 75MAF, 1.6 Rockers, Pulleys, MAC headers and H-pipe, Dynomax mufflers, K&N, 3 core radiator, white face gauges, custom interior, cobra R rims. 14.9 at 95.07mph with stock 2.73's. 89LX 2.3 Notch, daily beater! MY89GT

09-21-2001, 11:44 AM	#3
Maroon 5.0 LX Registered Member Join Date: Mar 2001 Location: Southern Maryland Posts: 471	I got a code 332=Insufficient EGR flow, and a 411=Unable to control RPM during low RPM check. ------------------ '89 LX 5.0 - 5 speed. Original Owner '94 E-150 4.9 Hi-Top Conversion Van

09-21-2001, 01:23 PM	#4
HiFlow5 0 Registered Member Join Date: Mar 2000 Location: Springfield, Ma, usa Posts: 706	i'd go and just replace the egr for right now. that may be causing the other code to be thrown. the egr has a part to play in exhaust gasses at idle speeds, so i'm thinking thats why you got the 411 code. good luck ------------------ 89 GT AOD w/ shift kit, B&M rachet shifter, Trickflow intake, Crane (E-type) cam, 70Tb, 75MAF, 1.6 Rockers, Pulleys, MAC headers and H-pipe, Dynomax mufflers, K&N, 3 core radiator, white face gauges, custom interior, cobra R rims. 14.9 at 95.07mph with stock 2.73's. 89LX 2.3 Notch, daily beater! MY89GT

09-21-2001, 06:43 PM	#5
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	The EVP is the Egr Valve Position sensor. It is standard practice to replace the EGR and the EVP at the same time, and unless you're broke, it's a good idea. HiFlow50 has a very good point concerning the IAB code 411. Try replacing the EGR & EVP first, and then clear and retest for codes, both KOEO & KOER (the 411 test is not performed during KOEO). If there's no code 411, you're done. If it does come back, replace the IAB. Take care ~Chris ------------------ Retired Moderator MustangNet My site: JimPorterRacing RACECAR spelled backwards is RACECAR HEY !!! Are you ASE Certified ??? If you are, ask me about iATN. The best tool you'll ever have, and it's free !!!

09-23-2001, 06:46 AM	#6
Maroon 5.0 LX Registered Member Join Date: Mar 2001 Location: Southern Maryland Posts: 471	Thanks for your help and suggestions. Now, has anyone bought from http://www.fordpartsonline.com ? Their Ford parts prices are almost the same as Auto Zone, NAPA and Pep Poys. ------------------ '89 LX 5.0 - 5 speed. Original Owner '94 E-150 4.9 Hi-Top Conversion Van

09-23-2001, 07:12 AM	#7
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	I've never heard of them before, but I just checked it out. They have some incredible prices, especially if it's really for Ford parts. Hmmm. Take care ~Chris ------------------ Retired Moderator MustangNet My site: JimPorterRacing RACECAR spelled backwards is RACECAR HEY !!! Are you ASE Certified ??? If you are, ask me about iATN. The best tool you'll ever have, and it's free !!!

09-23-2001, 07:55 AM	#8
mustang marty gt Guest Posts: n/a	hey pkrwud i passed on your ase site to afew people to help them out , it is appreciated esspecially to my boy at work with 72 nova, small cam , 3speed hehe , 3.00 to 1 rear end hehe who think's he's going to smoke me hehehehe. he really needed the help. see ya . ------------------

09-23-2001, 01:44 PM	#9
84LX89GT Mustangs Join Date: Jul 2000 Posts: 1,938	I started getting similar codes and had to replace the EVP sensor. Now because the gasket/O-ring is not correct there is "Excessive EVP voltage" so i'm probably going to have to try to hunt down another EVP gasket or use a sealant like silicone to seal it while checking out the output voltage....In other words, alot of work for a stupid problem. [This message has been edited by 84LX89GT (edited 09-23-2001).]

09-23-2001, 01:53 PM	#10
84LX89GT Mustangs Join Date: Jul 2000 Posts: 1,938	Man, that ford parts online site rocks. THE PRICES ARE CHEAPER THAN MY EMPLOYEE DISCOUNT THAT I GET AT A DEALERSIP BY LIKE 10%! Thanks for posting that link, now i know where i'm going to buy my parts from. ------------------ Mustang Parts Specialties ripped me off, don't buy from them. '84 Mustang 5.0 LX my LX '89 Mustang GT my GT