DaBrother

Amazing how that amount of junk can cause so much trouble.
Would have never been able to clean the IAC sufficiently while still on the manifold. So far so good.

Next up is to change the PCV valve, She said it had never been changed.

DaBrother

The drama never ends with this car.

Drove a short distance after cleaning the IAC Tuesday evening.
Yesterday morning was going to drive it to work and no go.
Battery read 9 V and 120 cranking amps according to guy at Advance Auto.

New battery. Ready to go again.
Nope dead as a door nail. New battery voltage is 12.58 V.
So now what? Get replacement battery?

ezone

Poor contact between battery posts and battery cables (contact points should be shiny clean metal)
corrosion,
bad connection between post clamps and cables, cables corroded

Learn voltage drop testing if you want to really diagnose where the fault lies......




Maybe....Forgot to remove the red and black caps from the new battery posts.......?



Isn't the first new battery good?

DaBrother

Tried to jump off. No go. Someone told me that if battery is bad may not be able jump start. Thinking about taking it back to Advance Auto to have it checked.

Checked the connection from neg. post to fender/wheel well.
Used some fine sandpaper on connector. Looked at connection at solenoid. Looks clean under cap. Loosened connection from solenoid to starter. Looked OK.

Or the problem could be lock and cylinder, the switch, fuse, gear position switch or the solenoid. Or any combination of items or all items listed.

ezone

Stab voltmeter probes into each battery post. Not on the clamps, I mean right on the round posts of the battery.

Have someone try to crank the engine while you watch the volt meter. If voltage stays up it's not a battery problem.
If voltage drops a bunch then there may be a battery problem.



Google how to do voltage drop testing.

Colin42

I recently had a no crank no start issue with my girlfriend's '99. Turned out the wires coming out of the positive battery clamp were all corroded. Give this a read.
https://www.civicforums.com/forums/2...-no-start.html

DaBrother

Took battery back to parts store just to make sure it is OK. Reading was 12.55 VDC. Would rather it be 13 VDC.
Next step is to clean cable clamps again. They where not corroded but...

Presently cannot do the voltage drop testing per a video since nothing happens.

Working alone here. Have a crank push button. Old my old Chevy know where to connect the two leads.
Where would I connect them on this '99 Honda Civic?

DaBrother

Well got that episode over with.
Had a duh moment.

Now have gone from idle surging to idle seems to be high. Idle does not cut back after driving a few miles and making two stops along the way.

ezone

12.6v is correct. You should NOT have a 12v battery sitting at 13v.

Colin42 posted a link to a thread where I kinda explained using a stupid simple test light to find the voltage drop. I suggest you click his link and read it.

But it must be acting up. If it's not acting up during the checks, then you probably won't locate the problem.

Same way.
One to the small wire on the starter, one to the hot cable or the positive post of the battery.

Yo, post the fix?
Use your fingers to block the open port in the throttle body opening again.....If it's the same port as before then it's still an IAC issue.....Tap on the IAC valve again with the engine running, it's probably still sticking?

DaBrother

To embarrassed to explain. Have revealed my ignorance before.

Hope it is not the IAC valve. Was thinking I would be burping the coolant system and then check for vacuum leaks. However, will cover the IA port in throttle body first.


OK
Run car till warm up. Put finger over IAC inlet port in throttle body. RPM's would drop.
Finally just gunned it like setting the choke on a carburated vehicle.
Idle dropped back to normal. Just to be sure sprayed Sea Foam from that can that has a long nozzle that loops to spray in intake.
Took a drive making three stops and added air to tires on one stop.

Now to figure out that click. Sounds like a rely.