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-   -   rough idle (http://www.peachparts.com/shopforum/showthread.php?t=232029)

preacher 09-03-2008 10:30 PM

rough idle
 
1192 190e 2.6 runs great on the go at a stop or red light it idles really rough rpms drop got a complete tune up in march started a week ago off and on mostly on

cdplayer 09-03-2008 10:52 PM

cdplayer
 
Just by chance a vac hose has slipped. Lift air breather assembly and look carefully at all vac lines/hose that may be disconnected.

Another member reported disconnected vac line was cause of sloppy engine idle. Just forgot to reconnect all of them when reattaching the breather assembly.

Hope this helps.

Tims450SL 09-04-2008 01:41 AM

coil???

preacher 09-04-2008 04:15 PM

rough idle
 
all vacuum lines are connected, and in good shape i,ll keep trying. thanks.

ps2cho 09-05-2008 01:29 PM

Have you replaced the OVP and checked engine mounts?

Tims450SL 09-05-2008 09:41 PM

it really sounds like the OVP or the CPS or the coil.

preacher 09-06-2008 11:57 AM

replaced wires and plugs smooth out a little. what is the cps?

slk230red 09-06-2008 12:21 PM

Quote:

Originally Posted by preacher (Post 1957658)
replaced wires and plugs smooth out a little. what is the cps?

Crankshaft Position Sensor

Have you tried cleaning your Idle Control Valve? Recheck those vacuum hoses going to and from the Idle Control Valve...both ends!

rluvsbenz 09-07-2008 09:04 AM

Quote:

Originally Posted by preacher (Post 1955327)
1192 190e 2.6 runs great on the go at a stop or red light it idles really rough rpms drop got a complete tune up in march started a week ago off and on mostly on

I had the same issue end up replacing fuel filter, ignition cap, rotor and spark plugs. After replacing all these items the problem still persist. After awhile it got difficult to start. I found a post here and recommendation to replace OVP relay. I had a used one in my parts bin that finally fix the problem. I suggest find a use OVP in your local junk yard because this is expensive item to buy for testing unless someone in this forum can show you how to test your old OVP.

slk230red 09-07-2008 11:28 AM

Quote:

Originally Posted by rluvsbenz (Post 1958220)
I had the same issue end up replacing fuel filter, ignition cap, rotor and spark plugs. After replacing all these items the problem still persist. After awhile it got difficult to start. I found a post here and recommendation to replace OVP relay. I had a used one in my parts bin that finally fix the problem. I suggest find a use OVP in your local junk yard because this is expensive item to buy for testing unless someone in this forum can show you how to test your old OVP.

http://i179.photobucket.com/albums/w...d/OVPRelay.jpg

As you can see in the schematic, 12v Battery is supplied to terminal 30 and is fused on top. Ground on term. 31 and Ignition Battery on term. 15 operates the Relay, thus completing the circuit to supply term. 30 battery to terminals 87Eand 87L only when the relay is operated. I performed a bench test on my OVP relay to verify these measurements.

preacher 09-08-2008 01:06 AM

thank you members, i will try these things and get back with you all.

preacher 09-08-2008 08:39 PM

cleaned the ICV, replaced the OVP, rechecked vacuum lines both ends of ICV still rough

slk230red 09-10-2008 11:57 PM

Quote:

Originally Posted by preacher (Post 1959491)
cleaned the ICV, replaced the OVP, rechecked vacuum lines both ends of ICV still rough

OK, instead of throwing more parts at your car, try this. After the car is warmed up, remove the air cleaner and start the car. If it is idling rough, very very slightly push down on the air plate to see if it makes a difference.
When mine had the same problem I finally had to adjust the fuel mixture at the tower to correct it. It still had the factory seal, so I cut off the top to get to the adjustment. It's been a year now and still running smooth and strong.

The pictures are not of my car, but are used for reference.

http://i179.photobucket.com/albums/w.../Airintake.jpg

http://i179.photobucket.com/albums/w...COadjtower.jpg

preacher 09-15-2008 04:20 PM

still rough done all the above, even more with the air conditioner could it be the coil???

slk230red 09-15-2008 05:00 PM

Quote:

Originally Posted by Tims450SL (Post 1955453)
coil???

Quote:

Originally Posted by preacher (Post 1965444)
still rough done all the above, even more with the air conditioner could it be the coil???

OK, so you had a tune up in March. Were the spark plug wires replaced with Bosch original type? Non-resistor spark plugs? New rotor and distributor cap?
How about the O2 Sensor...has it been checked?

I would consider doing a compression test to eliminate a valve/head gasket issue.


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