|05-20-2013 07:47 PM|
I had the same issue with mine. After some research, and talking with a couple friends at local Ford Dealerships, there is some sort of problem within the throttle body itself. I do not know how to explain what they said, and for the life of me, I cannot find the source again on the web, but I replaced my TPS, and pigtail and still had the issues. I replaced the throttle body, and all the issues went away.
Im only posting this based on my finding(which I'm sorry I cant find the source), and what I had to do to solve my problems.
|05-19-2013 01:02 AM|
X2, Somebody take that last post and print it up into a thirty foot sign...................I LOVE scrapyards. The biggest problem is that many don't realize some parts bought there are as good as over-the-counter Ford and some may not be really useable once used and weathered. I don't trust electric window regulators for instance, but if I find one with good pulleys I'll sever the pulley out of the assembly. Manual ones a good source of parts since you don't manually bang the window shut like a stupid motor does. The window glass holders are usually cracked so worthless part. Also, any electrics rained on, worthless. Actually maybe not if water seal still intact. You gotta know what can be good versus what is probably not.
I feel the same about the quality of cars there, painfully obvious that someone let car go there for something simple that could've been easily fixed for car to run for years more, but lack of knowledge stopped that. The biggest reason for most cars there now. They are usually in much better shape overall than they were in the '70s...............
I'd think scrapyard would be an excellent source of cheap TB/TPS...........biggest issue would be rain exposure since first thing removed under hood is the intake duct. Rain in TB could get in bearings but easy enough to check with part removed.
I tore my TPS down to try same rebuild idea, thought maybe I could see a wear mark on the resistor track, it looked as new. Could've put it back together but had a wild hair idea about the MTX one after so many complaining they couldn't make them work. Well, the MTX one worked so maybe the thin copper PC was cracked, so small I couldn't see it. Didn't get around to fully VOM checking it.
|05-18-2013 01:19 PM|
I don't have an early version Focus ATX so please pardon me if this suggestion is ignorant,
Why can't the poster with the problem go to a U-pull-it wrecking yard and find a later version ATX throttle body that will take the available aftermarket TPS and use that?
Or even an earlier version that still works. It's easy enough to check for proper operation with a multimeter while still in the yard.
One thing I have learned with my time haunting various wrecking yards is that it is incredible how few miles some people will put on their cars before the vehicles are wrecked. I have seen many times cars in wrecking yards with 50K-60K miles that get smashed up that are in much better condition than my own with many more miles that are still on the road. You would think that people with newer and more expensive cars would take better care of them but apparently having enough money to buy a new car doesen't coorelate with greater common sense. Most people think only of wrecking yards for body parts but many times you can find very low mile engine parts in them. I had a Datsun 210 once that I replaced an engine with 250K miles on it with an engine out of a wrecked vehicle that had been rebuilt - probably didn't have more than 20K miles in it - for less than $400.
Is it impossible to repair the TPS? As far as I know the TPS is nothing other than a potentiometer. Internally these have a wiper and a strip of resistance material. Sometimes the strip gets carboned up and if you take a potentiometer and spray contact cleaner into it then wipe it back and forth the strip will get cleaned and it will go back to proper operation.
Ebay is also another source of parts.
|05-18-2013 10:41 AM|
Thanks for the reply. I'll look into the IAC issues. First time I had vibration issues the passenger side mount was replaced when timing belt was done and that fixed problem, second time, all mounts were replaced and problem solved for about 6 months. All work was performed by Firestone. Just had mounts checked by them and they claim their okay. I did the plugs 2 years ago, and they looked good, engine only had 35k on it at that time, now has 61k miles...don't think compression is an issue with low mileage. I change oil and filter every 5k... Last, just had fuel pump replaced due to leakage on top of pump @ 90 degree bend where fuel exits pump. Guess car is falling apart due to age, not mileage.
|05-17-2013 08:39 PM|
You might check some threads on IAC (Idle Air Control) issues, see if any of that matches your symptoms. (Sounds possible, and you'll even find some pictures that way)
On the Motor Mounts, we've seen a lot of issues with aftermarket mounts for the passenger side - warranty doesn't help much if you're replacing in a few months for example. Ford one there helps for smoothness. Of course any idle issue would make it much worse!
Have you done a plug check to see how it's running overall yet? Or a compression check to make sure there is no mechanical issue?
Based on age, asking the mileage & wondering if the cam belt has been done is a std. question...
Thought I'd toss out a few ideas in the interim for ya...
|05-17-2013 07:14 PM|
I have a 2000 Focus wagon with DOHC Zetec engine, automatic tranny and have questioned my TPS for sometime now, sounds like you know what's going on with these cars. Engine idles low sometimes, when I put it in drive the engine goes to die and then picks back up to idle speed. I've got no ECL warning, just crappy idle.... Any thoughts you can provide? BTW, just had fuel pump replaced at 61K miles due to leakage (cracked plastic 90 degree bend on pump)....also have good fuel filter...
I'm really tired of all the trouble I've had with car....engine motor mounts replaced twice and still shakes like hell at low rpm.
|04-10-2013 04:15 AM|
|amc49||Six, two and even, over and out..........................as Dick Tracy would say.......|
|04-08-2013 11:23 PM|
Had a "Senior Moment" there amc, SAW your link then forgot about it when I referred the OP to it by name....
After Oblivion jumped in & lildisco was trying to calm things down all I could think of was getting back to your original point & referring the OP to your write up.
Good info. as usual, the OP didn't take it wrong - then the whole thing "blew up".
|04-08-2013 10:53 PM|
I put the link right there in my first post.
No intent to slam anyone, but if you put this out there you need to back it up.
'Ford dealerships may not sell them, but the aftermarket still sells them.'
It's incorrect, go to those sites and you will find they list a part that is actually for MTX. Do the research. They will willingly sell you the wrong part, when you twist it into uselessness trying to fit it in the incorrect clock position, it's then damaged and you can't take it back. Try to order the correct ATX part and it will never show up, because it doesn't exist anymore. BTDT, I used to sell the parts. The MTX one I used in my conversion was sold to me as an ATX one, they swore it would fit, the catalog also showed it as fitting but just the MOTOR, no mention of trans (big warning sign there!)................buyer beware. Of course I had the old ATX one to compare, they could not match that one but offered to special order it, I refused as I have already been there with no result, the order just backorders.
At a casual view the MTX one appears to be the same, but I assure you it is NOT. The very slight difference in position is all it takes to read wrong and screw up the whole works.
I apologize for any insult perceived from me, often I do not pick my words as tactfully as I should.
|04-08-2013 10:04 PM|
Larrydoood, if you need to replace a TPS on an automatic, amc49 posted a good "how to" thread recently on how he accomplished just that thing. It CAN be done if you want to save the $ that would be spent on a whole new updated throttle body...
manual trans TPS to ATX throttle body - it works! was the title of the "how To" thread.
Sorry someone jumped in with nothing to add but attitude, Mods. can't be everywhere at once to delete such things B4 you see them so it's better to ignore the inappropriate.
|This thread has more than 10 replies. Click here to review the whole thread.|