I have an issue with my 97 Honda Civic, when idling the Rpms fluctuate up and down about 1000 and when driving it seems to try and stall on its own and the temperature gauge has stopped working. Any ideas would be greatly appreciated

 

Stock Civic? What trim?

Pull the CEL codes and post them.

https://honda-tech.com/honda-civic-d...lists-1901557/

 

It's a stock lx the codes are p0500 p1500 and p0140

 

p1500 and p0140 are not Civic codes. Double check them.

p0500 --> Does the speedometer work?

Reset the ECU to see whether any of the codes return.

 

The speedometer does work. I just replaced the sensor not too long ago. I resent the eve and the sel went away but the Rpms are still fluctuating

 

Clean the IACV.

 

I just replaced it yesterday

 

Look for a vacuum or intake air leak. Either of these should throw code P0505.

Make a list of everything you've done to the car so far.

 

I changed the speed sensor iacv clutch master/slave cylinder and took out the cruise control. But yesterday when I changed the iacv I realized it doesn't have Egr in it

 

Only the 97 Civic HX would have an EGR system.

 

It has the dump off valve for it and what looks like the hose and connector that go into it

 

Post pics. What's the block code? It should be D16Y7, if stock.

https://honda-tech.com/honda-civic-d.../#post48684945

 

 

The block code I found was p2a-8. Which I can't seem to find anything on google about

 

A/C drain hose.

That's the head code. What's the block code?

 

D16y7

 

The car seems to have the stock engine - no EGR system. The D16Y5 engine has the EGR system.

 

Then what are the two hoses on the third picture? They're down kinda underneath the battery

 

Let's see the other end of that hose dangling in the first photo.
Where does it connect to?
Is your car missing the evap canistor?

 

I'm pretty sure both are the A/C drain hose in the last picture.

 

The long one in the second picture? I think it is

 

The


It connects to this on the driver side by the steering column

 

Have u try spraying carb cleaner around the manifold to look for a leak? Engine should be cold while u do this, risk of fire.
Then try the smoke method, see if u can spot any leak.

 

Where would I Connect a hose to do the smoke test?

 

On the intake manifold, port where your brake booster line hook into.
Use CIG or cigar if u d9nt have a smoke machine. Pretty easy, there are couple YouTube vids on how to do it.