90 Bronco, EGR Question
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Freshman User
Joined: May 2000
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90 Bronco, EGR Question
I have a 90 full size with the 5.8L.....
Failed emmisions today, the NOX portion. Seems could be an egr valve or related problem. Here is what I did.
I could not get the stem to move on the valve as I ran the rpm's up. I thought it was the valve. However after several checks around the engine, I found a broken vacuum line, seems it was going to the purge canister.
Does it make sense this could have been the problem? Anyone know how to really test this stupd thing ( egr and related controllers) so I don;t have to go out and waste money??
Thanks for all of your help!!!!
Failed emmisions today, the NOX portion. Seems could be an egr valve or related problem. Here is what I did.
I could not get the stem to move on the valve as I ran the rpm's up. I thought it was the valve. However after several checks around the engine, I found a broken vacuum line, seems it was going to the purge canister.
Does it make sense this could have been the problem? Anyone know how to really test this stupd thing ( egr and related controllers) so I don;t have to go out and waste money??
Thanks for all of your help!!!!
Postmaster
Joined: Jul 1999
Posts: 3,172
Likes: 4
90 Bronco, EGR Question
Sharlo ,
There could be a few things wrong with it . First apply vacuum to it & see if it holds . It should have a vacuum line running from the Egr to its solenoid . Check that the solenoid's vacuum line is connected . If you run the KOER portion of the EEC IV self test you can visually watch to see if the egr opens . Its also possible the passage way in the intake is clogged with carbon .
There could be a few things wrong with it . First apply vacuum to it & see if it holds . It should have a vacuum line running from the Egr to its solenoid . Check that the solenoid's vacuum line is connected . If you run the KOER portion of the EEC IV self test you can visually watch to see if the egr opens . Its also possible the passage way in the intake is clogged with carbon .
