Can you tell me where the EGR valve for my 1986 Nissan Sentra is located

EGR valve ,turbo ? depends on what model and weither its a diesel or a pertol

probly age--needs boiling out or jet ajust-------try fixin idle speed with screwdrivr---------cud be engine issue-like tuneup---inspect inside distributer cap for corrosion or worn plug wires---also egr valve mite be bad--------get vehicle scanned

Open your hood. The EGR valve is attached to the metal emissions tube above the intake manifold and next to the firewall. It is a round, metal cylinder with a rubber vacuum hose running from the top of the valve.

1984-1986 Nissan Sentra Spark plug BPR5ES-11 Gap .041

if there pipes or tubes on top of your exhaust manifold that is where your EGR valve should be. if you want diagrams or text to help fix this problem i suggest the book from Chilton. they tend to explain thing pretty well.

It may be that the passage to the exhaust is blocked also.

The EGR solenoid is located towards the rear of the car from the EGR vavle and slightly towards the center. It kind of stands on end. There is a vacuum line coming out the top (port C) and a green 2 wire connector plugged into it. Hope this helps.

hi, most of the time when these lights come on, its because of some sort of sensor failure. if you are not experiencing any noises or tapping in the engine compartment, this is only a failed sensor. you will have to get it diagnosed by the computer to know what specific sensor it may be. i suspect maybe a O2 sensor or egr valve. this is minor but, you Will need to get this repaired if possible.

Check for vaccume leaks and also you PCV valve. check the hose too. Visually inspect every vaccume hose you can find. Sounds like a leak .

Code P400 is an EGR (exhaust gas recirculation) valve malfunction.

These cars are known for the EGR ports getting clogged.

The valves themselves rarely fail.