What sensor is this?

[89mulletbird]

There is a black plastic sensor near the rear fuel injector on the driver's side of the engine. It has two vacuum lines going to it on the front side. One large and one small. There is a 3 pin connector going to the back of the sensor.

I broke off one of the inlet tubes and need to figure out ASAP what sensor this is so I can get it replaced by this weekend, thanks!

 

[TTA850]

I belive it's the EGR valve vac control, though I'm not sure exactly what it's called. One of those vac lines should go to the EGR valve and the other to one of the metal lines off the top of the throttle body(with a check valve).

Hope that helps,
Steve

 

[Jan Larsson]

One just ended on e-bay at a decent price. I beleive GM still carries them as they was used and a lot of 80s cars. I got a spare from GM about a year ago, if memory serves me right they where about $65 or so back then.

eBay Motors: 86 87 BUICK GRAND NATIONAL EGR VALVE SOLENOID T TYPE (item 110078332972 end time Jan-14-07 18:00:00 PST)

 

[89mulletbird]

Thanks for the info.

I just changed out my valve springs and now my car won't run past 10# of boost. Under 10# it runs perfectly, but it backfires bad when I get above 10#.

I'm hoping it's because of the small port being broken on this EGR valve.

 

[John Pearcy]

It's called the EGR Solenoid.

 

[Jan Larsson]

Here's one http://cgi.ebay.com/ebaymotors/86-8...012QQitemZ220070629804QQrdZ1QQsspagenameZWDVW

 

[89mulletbird]

Thanks all - I found one at the dealer for about $80. I'll update if this fixes my misfiring issue.