Idle issues at startup

[BroncoJoe19]

I did the propane trick on what appeared to be an obvious leak, and it did not work. My guess is that one must be methodically slow with it and the leak must really be significant. I suggest that you give a good LOOK at the connections, and see how easily, or difficultly the hoses slide on and off.

If I counted properly there are now three of you with the same problem?

Did you all pull codes?

How to scan FORD on board Diagnostic Trouble Codes (DTCs) in your driveway

Howto Pull Codes 1983-1995 Broncos, Mustang, F series Trucks, Econolines, 302, 351 and more

When you first start up, while it is idleing high, many of the sensors are not in play, but once the Coolent temp sensor says it is warmed enough, the MAP becomes more important to the PCM. The MAP is very dependant upon an intack vacuum system.

 

[S2LEGEND]

2 things i've noticed...

1) eratic idle while sitting at a light... talking a 300 RPM up n' down swing incessantly...

2) trouble restarting the truck and running rough after a quick shut down. (such as running into the store, coming back out to turn it on. runs like **** and will barely idle.

following this thread with interest. haven't started to do any sort of repair/troubleshooting.... also noticed a hole in the tube leading up to the engine bay from the cat.

 

[Croneybones]

As of now... Truck still does the same stalling- thing. If I let off the gas very... very slowly, when the rpm drops, it will try and correct itself. If I let it off slowly enough, it wont stall right away, but will idle till it warms up, then its fine. I have now run out of "play" money, so I have no funds to buy a vacuum kit to test the egr. I don't want to pull the engine apart because if I break something, I can't afford to buy any replacement. Need someone else to take the reigns here...

 

[Croneybones]

Last night, we had extended some family over, and one of them happen happened to know a lot about fords, especially 302's. We were tinkering around, and he said he heard something as I started the truck. So I started it again and he said my timing is off a little. He had the tools and adjusted it. The truck fired up a lot better right away.

I waited overnight to make sure the truck was thoroughly cold. This morning, it is a balmy 28 degrees outside, and the truck has sat all night.

I fired it up and it seems to be working fine. This, I think was my problem, and it was free to fix.

I'll keep updating on any issues.

 

[S2LEGEND]

that's good news! i'll have to check that out too now.

 

[Croneybones]

Still working! Now I'm noticing a weird, pill bottle-rattling sound sometimes from the front when I'm driving and I hit the gas. Related?

 

[S2LEGEND]

Still working! Now I'm noticing a weird, pill bottle-rattling sound sometimes from the front when I'm driving and I hit the gas. Related?

that wouldn't be fuel ping would it?

 

[BroncoJoe19]

Gentlemen:

before you set the timing, you should disconnect the SPOUT connector. Then set it with a timing light. I think it should be 8 degrees before TDC, but check me on that.

 

[S2LEGEND]

Still working! Now I'm noticing a weird, pill bottle-rattling sound sometimes from the front when I'm driving and I hit the gas. Related?

So... it's been almost 2 weeks... how you holding up? I am picking up a new IAC after work today. It seems like the truck has gotten progressively harder to start. I now need to use the pedal to get her to fire over. I do feel a tune up is in order, and I want to set the timing. After it's warmed up.. restarting it is a big issue too. I let a friend borrow it the other day, and it stalled on him, and he had to push it off the street b/c he couldn't get it to refire. I just re-read this entire thread, and there are so many common symptoms and stories it's unreal. I also have a bad hole in the A.I.R. pipe leading up from the cat. I ordered it, and am waiting for it to arrive. I'm getting a nice popping from under the truck every time I shift due to that.

So, Croney and Siraltitude... how are your trucks running?

Phill

***UPDATE***

so after making this post... i went to Autozone and bought an IAC and replaced it. And I replaced 2 sparkplugs (ran out of daylight) and topped off the coolant. This seems to have helped a good bit... but it is not 100% solved. Once i put in the other 4 plugs and get the timing set... maybe that will do it. But I noticed a definate improvement. I'd still like to know how your trucks are running though. /emoticons/[email protected] 2x" width="20" height="20" />

Phill

 

[Croneybones]

mines still doing great. the rattle i have is that we over-adjusted the timing. im still broke so it will stay like that until i can afford a light. But as far as the stalling and surging... adjusting the timing was my solution.

By the way... we did pull the Spout connector, but didn't use a light.

 

[S2LEGEND]

great. changed the other 4 plugs. all gas soaked. now it's surging again.

**sigh**

going tuesday to the Lincoln/Mercury dealership next door to my dealership to see if they can figure it out. we'll start w/timing and go from there i guess.

 

[S2LEGEND]

okay... so timing was set yesterday. no noticable difference. I now have to use throttle to get the truck started, and it's an FI. So... my next guess is Fuel Pressure Regulator. Past experience with another vehichle was engine idle surge due to bad/clogged FPR. Suggestions? Anyone?

:mellow:

 

[SirAltitude]

Sorry I've been offline for a little while fellas, due to lack of income, internet had to go... /emoticons/[email protected] 2x" width="20" height="20" />

Ok, so, my truck starts and runs fine in the summer. I did attempt to adjust the timing, but it was fine.

I've not done anything to it since my last postings of occurances, it's wamred up down here in Tennessee and I dont have this winter issue.

It's hard to diagnose and repair something that only occurs in cold weather, so, I'm gonna give it the summer and odd and end jobs to 'er and hope for the best later this year.

I do however, need a rear window motor. Mine is on the way out. It goes down fine, but does'nt want to go up on it's own, I have to assist it.....

I'll cruise the threads here and see what's been layed since my last visit. I appreciate you folks keepin the thread alive and working in my absence.

I'll catch you folks later,

Chris "SirAltitude" K.

 

[Croneybones]

It's getting cold out again, has anyone been having the same issues? Mine's been doing pretty good all summer, but on the colder days, I have to "2-foot" it when I'm stopped and at red lights. It was a high of 57 today and she stalled out on me once.

Over this year, I've replaced all plugs, wires, ignition cap, etc... New air filter, adjusted the idle... Still having some of the same issues, still not throwing any codes.

 

[Croneybones]

As the weather gets colder, the truck is being more difficult. Today, I may have found a breakthrough... I went to turn the key on and lost all power to everything. I popped the hood and took a wrench and started banging on stuff. Lights came on when I hit the red battery terminal. Tried to start and immediately lost power again with a little puff of smoke or something coming from the red terminal. I took it off and cleaned it up (it wasn't at all bad) and put it back on and cranked it down... Truck started right up, and didn't give me any idle issues. Lately it's tended to stall when I put it in reverse, or if I'm stopped at a redlight, or if I cut the wheel all the way when idling.

I'm thinking maybe battery and alternator are both weak... I know my lights always brighten up when I hit the gas. I'll replace those and update soon.