North American Turbocoupe Organization



In the hunt for a proper running car...
BoostedBirdie Offline
Member
#1
I am done with ever taking my car to a dealership again. For those of you that live in the South East area of PA., stay away from C&C Ford. When I returned from overseas, I had the TC taken there to have it tuned up. That "replaced" a bunch of parts, including the PCV valve and the 02 Sensor. Well today while I am out adjusting my TPS and cleaning my throttle body, IAC, etc, I notice that PCV looks odd, I give it a slight tug, it slides RIGHT out of the hose, and it looks like it is older than me. No hose clamp or anything is on the bottom hose, so it is just floating in the hose. The TPS is currently set at .95 volts on the dot, and the car still bounces around in idle. Not as much, about 300-400 Rpms now, but it is noticable. Freaking 42 code is still there. I cleaned the intake track out, adjusted TPS, cleaned the ground on the turbo, and tested it, and disconnected the battery for 10 minutes. Code Came back. I am so fed up at the moment, and it's a damn good thing I moved to Maryland and am no longer down the street from that dealership. All the places near me are closed, so no hose clamps today. My question is, If the PCV valve is just floating in there, could it cause the 42 code and the jumping idle?? If the dealer put the wrong 02 sensor in the car (i.e the one from a 2.3 Mustang N/A) could it possibly make it run rich, or would the CEL just be lit all the time? Sorry for the run on.....I am just extremely frustrated at the moment. Car seems so close, but yet so far away. Let the Eagles lose, people at work will be sorry then!

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-Andrew
1988 TC 88k orignial miles, 5 Spd, mostly stock, K&N and B&M Ripper. Looks a little rough, but thanks to this board, runs great.
1956 Thundebird FOR SALE Unrestored, unmolested beauty! 48,000 ORIGINAL miles. See Ad in "For Sale" section.

"God has a hard on for Marines, because we kill everything we see. He plays His games, we play ours. To show our appreciation for so much power, we keep heaven packed with fresh souls. God was here before the Marine Corps, so you can give your heart to Jesus, but your ass belongs to the corps." R. Lee Ermey in "Full Metal Jacket"

[This message has been edited by BoostedBirdie (edited 09-18-2004).]
-Andrew
--Proud NATO member--
1988 TC 88k orignial miles, 5 Spd, mostly stock, K&N, B&M Ripper, 190LPH Walboro, Aeromotive adjustable FPR with gauge, exhaust coming soon. Looks a bit rough, but thanks to this board, runs great.

"The soldier, above all other people, prays for peace, for he must suffer and bear the deepest wounds and scars of war."
"No man is entitled to the blessings of freedom unless he be vigilant in its preservation." -- General Douglas MacArthur
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Pete D Offline
Administrator
#2
Bring it over, I'll look at it for you [Image: biggrin.gif]

I don't think a sloppy fit a the bottom hose will cause a code 42. I'm guessing but the EEC is probably corrected fir the air draw through the PCV system, whether from the crankcase or from leaking around the sloppy fit. If anything, a leak there, like a vaccum leak, would tend to make the mixture lean because there would be more air entering the system than is being measured by the VAM. If the fit is sloppy, that might tend to make the pCV look "old" quick.

I'm not positive but I think the turbos and NAs probably use the same 02. I doubt that the 02 is bad.

Have you run the fuel system diagnostics? also pull the hose off the fuel pressure regulator and see if there is gas or the stron smell of gas in the hose. If yes, the regulator diaphram is ruptured and that is likely the cause of the code 42. I'm assuming you pulled the codes after the engine was at operating temp???

How does it run when first started cold??
Pete Dunham


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Walsted Offline
Posting Freak
#3
42 is one of the o2 sensor codes, I think. I believe a jumping idle indicates fuel or ignition problem. How are your plugs, cap, rotor, wires, etc.? And the connections to them?

Are all of the wires on the injectors seated right?

Is the SPOUT tight?

How old is your fuel filter/fuel pump?

Have you checked your FPR?

Does your oil filler cap still seal?

Have you cleaned your IAC recently?

That is all I can think of at the moment. Hope this helps.

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Mike Walsted - NATO member
1986 5-speed TurboCoupe and 1985 5-speed XR7
Mike Walsted - Sold my 1986 5-speed TurboCoupe
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BoostedBirdie Offline
Member
#4
Okay here goes...
"Are all of the wires on the injectors seated right?" Everything appears seated and tight.

"Is the SPOUT tight?" Checked, and is good.

"How old is your fuel filter/fuel pump?" About a month. Walboro 190LPH and same for filter.

"Does your oil filler cap still seal?" Seems too, not air tight though.

"Have you cleaned your IAC recently?" About 30 minutes ago....

"Have you checked your FPR?" FPR is the stock piece, from 88 I'm guessing. I am waiting for my new FPR to get here.

I ran the diagnostics last weekend, and fuel wise, everything checks out. Pressure is dead on at idle (39-40PSI) and doesn't drop off after the car has been shut off. Getting a PSI of fuel for each of pound of boost. When the car is first started, it falters, and will stall if I don't feather the gas for a second, after that it runs fine with exception of the code. I can tell it is running rich with the ass meter, it is just not all there....

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-Andrew
1988 TC 88k orignial miles, 5 Spd, mostly stock, K&N, B&M Ripper, 190LPH Walboro, Aeromotive Adjustable FPR with gauge, exhaust soon. Looks a little rough, but thanks to this board, runs great.
1956 Thundebird FOR SALE Unrestored, unmolested beauty! 48,000 ORIGINAL miles. See Ad in "For Sale" section.

"God has a hard on for Marines, because we kill everything we see. He plays His games, we play ours. To show our appreciation for so much power, we keep heaven packed with fresh souls. God was here before the Marine Corps, so you can give your heart to Jesus, but your ass belongs to the corps." R. Lee Ermey in "Full Metal Jacket"

[This message has been edited by BoostedBirdie (edited 09-18-2004).]
-Andrew
--Proud NATO member--
1988 TC 88k orignial miles, 5 Spd, mostly stock, K&N, B&M Ripper, 190LPH Walboro, Aeromotive adjustable FPR with gauge, exhaust coming soon. Looks a bit rough, but thanks to this board, runs great.

"The soldier, above all other people, prays for peace, for he must suffer and bear the deepest wounds and scars of war."
"No man is entitled to the blessings of freedom unless he be vigilant in its preservation." -- General Douglas MacArthur
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Pete D Offline
Administrator
#5
Quote: When the car is first started, it falters, and will stall if I don't feather the gas for a second....

I'll send you a file for checking the ECT. A bad one doesn't always set a code and can cause rough cold running. All you need is a volt/ohm meter
Pete Dunham


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Walsted Offline
Posting Freak
#6
Quote:Originally posted by BoostedBirdie:
...I ran the diagnostics last weekend, and fuel wise, everything checks out. Pressure is dead on at idle (39-40PSI) and doesn't drop off after the car has been shut off.
That pressure was with the vaccuum line to the FPR disconnected, right, and you did re-connect the vaccuum line afterward? (Not like anyone here would have forgotten something like that in the past...)

I think fuel pressure at idle with the vacuum line attached should read in the high twenties, low thirties, assuming close to 20 inches (about 10psi, roughly,) of vaccuum at idle.

Hope this helps.

------------------
Mike Walsted - NATO member
1986 5-speed TurboCoupe and 1985 5-speed XR7
Mike Walsted - Sold my 1986 5-speed TurboCoupe
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BoostedBirdie Offline
Member
#7
ECT....hmm....I see where that would mess me up on the cold start, but would that make the car run rich? I am think it will, if it tell the EEC that car is running hot, or cold for that matter.....thanks for all the help Pete.
Walsted....stuck a post in while I was posting! Yes the vacuum was disconnected, and reconnected after the test. The FPR will be replaced this week anyway with the adjustable unit in the sig, mostly for future use, but in this case, it'll remove another variable.
------------------
-Andrew
1988 TC 88k orignial miles, 5 Spd, mostly stock, K&N, B&M Ripper, 190LPH Walboro, Aeromotive Adjustable FPR with gauge, exhaust soon. Looks a little rough, but thanks to this board, runs great.
1956 Thundebird FOR SALE Unrestored, unmolested beauty! 48,000 ORIGINAL miles. See Ad in "For Sale" section.

"God has a hard on for Marines, because we kill everything we see. He plays His games, we play ours. To show our appreciation for so much power, we keep heaven packed with fresh souls. God was here before the Marine Corps, so you can give your heart to Jesus, but your ass belongs to the corps." R. Lee Ermey in "Full Metal Jacket"

[This message has been edited by BoostedBirdie (edited 09-18-2004).]
-Andrew
--Proud NATO member--
1988 TC 88k orignial miles, 5 Spd, mostly stock, K&N, B&M Ripper, 190LPH Walboro, Aeromotive adjustable FPR with gauge, exhaust coming soon. Looks a bit rough, but thanks to this board, runs great.

"The soldier, above all other people, prays for peace, for he must suffer and bear the deepest wounds and scars of war."
"No man is entitled to the blessings of freedom unless he be vigilant in its preservation." -- General Douglas MacArthur
Reply

3bird Offline
Member
#8
I had a code 42 and the car running real rich caused by a bad VAM. You might check the voltages on yours.
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BoostedBirdie Offline
Member
#9
Sorry to be a pain guys, but I couldn't find much in a search, how do you diagnos or troubleshoot a VAM? Gonna run over to TF.org and see if I can dig something up....

------------------
-Andrew
1988 TC 88k orignial miles, 5 Spd, mostly stock, K&N, B&M Ripper, 190LPH Walboro, Aeromotive Adjustable FPR with gauge, exhaust soon. Looks a little rough, but thanks to this board, runs great.
1956 Thundebird FOR SALE Unrestored, unmolested beauty! 48,000 ORIGINAL miles. See Ad in "For Sale" section.

"God has a hard on for Marines, because we kill everything we see. He plays His games, we play ours. To show our appreciation for so much power, we keep heaven packed with fresh souls. God was here before the Marine Corps, so you can give your heart to Jesus, but your ass belongs to the corps." R. Lee Ermey in "Full Metal Jacket"
-Andrew
--Proud NATO member--
1988 TC 88k orignial miles, 5 Spd, mostly stock, K&N, B&M Ripper, 190LPH Walboro, Aeromotive adjustable FPR with gauge, exhaust coming soon. Looks a bit rough, but thanks to this board, runs great.

"The soldier, above all other people, prays for peace, for he must suffer and bear the deepest wounds and scars of war."
"No man is entitled to the blessings of freedom unless he be vigilant in its preservation." -- General Douglas MacArthur
Reply

Pete D Offline
Administrator
#10
VAM test sent. It like testing the TPS
Pete Dunham


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