Something kicks in when warmed up

Lilblkshp · Nov 8, 2018

Hello I have a kind of weird problem here. The car will start fine and idle fine when cold but once warmed up if I turn it off it will restart but will not hold the idle unless I hold the pedal down for a few minutes until something kicks in and then the RPMs raise up nice and smoothly, I let my foot off the pedal and it will hold the idle and drive fine. I have installed new distributor coil wires plugs Etc TPS adjusted properly timing has been verified compression checked put the smoke machine on it no leaks new map sensor, vacuum steady at 18. when warm it will not start and hold an idle unless I hold the pedal down and something kicks in then it Smooths out idles fine let my foot off the pedal it would drive fine hold idle at stop lights and everything, slight hiccup here and there but never close to cutting off until I turn it off and then it starts all over again. struggling to try and figure out what that is that's kicking in and making it smooth out

KZGUNS · Nov 8, 2018

Lilblkshp said:
Hello I have a kind of weird problem here. The car will start fine and idle fine when cold but once warmed up if I turn it off it will restart but will not hold the idle unless I hold the pedal down for a few minutes until something kicks in and then the RPMs raise up nice and smoothly, I let my foot off the pedal and it will hold the idle and drive fine. I have installed new distributor coil wires plugs Etc TPS adjusted properly timing has been verified compression checked put the smoke machine on it no leaks new map sensor, vacuum steady at 18. when warm it will not start and hold an idle unless I hold the pedal down and something kicks in then it Smooths out idles fine let my foot off the pedal it would drive fine hold idle at stop lights and everything, slight hiccup here and there but never close to cutting off until I turn it off and then it starts all over again. struggling to try and figure out what that is that's kicking in and making it smooth out

Mine did this and was finally fixed after i put a motorcraft IAC on it. This may or may not fix your problem. You should read through the surging idle checklist on this forum.

DSB88GT · Nov 8, 2018

What's "kicking in" is most likely the ECU going into a different mode. I'm not one of the experts on here, so I don't know the technical terms. I'm sure someone will chime in.

nickyb · Nov 8, 2018

Before buying any more parts,pull computer codes,use checklist as suggested ,then post results.

Lilblkshp · Nov 8, 2018

KZGUNS said:
Mine did this and was finally fixed after i put a motorcraft IAC on it. This may or may not fix your problem. You should read through the surging idle checklist on this forum.

Thanks I did think of that since I had that issue before on an explorer

Lilblkshp · Nov 8, 2018

nickyb said:
Before buying any more parts,pull computer codes,use checklist as suggested ,then post results.

All parts were old as dirt so I don't mind that, I've been over the checklist several times. Only codes I get are smog related. I'll pull them again and post back. Thanks

Lilblkshp · Nov 8, 2018

Dumped codes with engine running and have, 34, 44, and 94.

nickyb · Nov 8, 2018

Lilblkshp said:
Dumped codes with engine running and have, 34, 44, and 94.

Well if parts are old as hell then the ect sensor probably is old too.It's easy to get to and not too much money,try it.Or at lest pull it and check it.

KZGUNS · Nov 8, 2018

Lilblkshp said:
Dumped codes with engine running and have, 34, 44, and 94.

Those codes relate to thermactor and egr. Did you remove all that stuff?

Lilblkshp · Nov 8, 2018

KZGUNS said:
Those codes relate to thermactor and egr. Did you remove all that stuff?

Both are there but not temoved

Lilblkshp · Nov 8, 2018

Lilblkshp said:
Both are there but not temoved

Can I just delete them? Will they cause this issue?

General karthief · Nov 8, 2018

Reset the computer. Unhook the battery, turn on the head lights for 15 minutes or so, turn off lights and hook up the battery. Drive it around for a while. Check for codes again.

Lilblkshp · Nov 9, 2018

Its

nickyb said:
Well if parts are old as hell then the ect sensor probably is old too.It's easy to get to and not too much money,try it.Or at lest pull it and check it.

Its New, made a major difference but still won't hold idle upon restart

Lilblkshp · Nov 9, 2018

I unplugged thermactor and whatever else that is down there in the passenger corner and it is restarting and idling on it's own. Now though it's going up and down slowly if iac is plugged in. I'll go back over surging checklist again. Can I just delete them solenoids?

Lilblkshp · Nov 9, 2018

General karthief said:
Reset the computer. Unhook the battery, turn on the head lights for 15 minutes or so, turn off lights and hook up the battery. Drive it around for a while. Check for codes again.

I'll try that and get back to you

General karthief · Nov 9, 2018

Lilblkshp said:
I unplugged thermactor and whatever else that is down there in the passenger corner and it is restarting and idling on it's own. Now though it's going up and down slowly if iac is plugged in. I'll go back over surging checklist again. Can I just delete them solenoids?

You'll be going backwards, plug all that stuff back in and do the computer reset, let us know what you find for codes then we can go from there.

Lilblkshp · Nov 9, 2018

General karthief said:
You'll be going backwards, plug all that stuff back in and do the computer reset, let us know what you find for codes then we can go from there.

Ok got you

Lilblkshp · Nov 9, 2018

General karthief said:
You'll be going backwards, plug all that stuff back in and do the computer reset, let us know what you find for codes then we can go from there.

Did that, while I was hooking everything back up I pulled up vacuum diagram and sorted out all the messed up lines. No codes only 11, it starts and holds idle now. Gonna readjust tps and timing cause there's still a skip just off of idle. What's best timing and idle for these with no mods. I'm a Chevy guy just helping a friend out at my shop. Thanks a million man

General karthief · Nov 9, 2018

12-13* with spout removed, about 750 idle. If you go to the surging idle checklist in the technical/how to thread it shows you the proper way to set timing and idle.

Lilblkshp · Nov 9, 2018

General karthief said:
12-13* with spout removed, about 750 idle. If you go to the surging idle checklist in the technical/how to thread it shows you the proper way to set timing and idle.

everything is good with the idle now thanks a lot but do you think you can give me some tips and pointers. I got a low speed Skip that seems like a ignition miss and it does it every now and then when you're stopped in gear and very rarely it will cut off. Starts right back up and Acceleration is skip free. I've seen a lot of different suggestions on what the tps should be set at, what do you say?

Something kicks in when warmed up

New Member

I can swing up to 11”

Active Member

I gotta say i never painted my nuts, Never Ever

New Member

New Member

New Member

I gotta say i never painted my nuts, Never Ever

I can swing up to 11”

New Member

New Member

wonder how much it would cost to ship you a pair

New Member

New Member

New Member

wonder how much it would cost to ship you a pair

New Member

New Member

wonder how much it would cost to ship you a pair

New Member

Similar threads

Privacy & Transparency

Privacy & Transparency