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failsafe engine mode... throttlebody replacement

Discuss anything related to the engine, electronics, transmission, etc.
knowledge5106
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Location: SAN ANTONIO, TX
Vehicle: 2005 Mercury Montego Premier
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Re: failsafe engine mode... throttlebody replacement

Post by knowledge5106 » Tue Sep 27, 2016 11:26 pm

Thank you for the pictures. My Montego is still sitting in my drive way. I haven't been able to get it fixed yet.

So you were able to get your car back working by replacing the old Throttle Body?


warment
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Location: Virginia

Re: failsafe engine mode... throttlebody replacement

Post by warment » Wed Sep 28, 2016 3:28 am

I replaced the TB and the pedal assembly. I suspect that just the TB was bad. My issue was that the car would start and run fine for a period of time, but would sometimes go into limp mode while driving. I would turn the car off, restart it, and then it would operate normally again for a period of time.
2005 Ford Five Hundred SE
6-spd auto

GT-101
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Vehicle: 2005 Ford Five Hundred

Re: failsafe engine mode... throttlebody replacement

Post by GT-101 » Wed Sep 28, 2016 10:38 am

Same issue here - car started loosing power and just died. Hit the fuel reset, pulled the PCM fuse and waited 10 mins - car started up. Happened twice after that and once I hit the fuel reset and pulled the PCM fuse and put it back restarted fine.

Over the weekend, I cleaned out the throttle body and seemed like it was running good, but died again and this time the reset didn't work. Disconnected the battery to reset, tried starting, would only crank but did not fire up. Finally got a check engine light (P0191) - replaced the fuel pressure sensor, still nothing. Fuel filter was replaced recently and mechanic checked out the fuel pump says it's working good. He got the car started and it ran for 40 mins and then died again.

I'm thinking maybe the inertia switch but just want to know if anyone has a definitive answer why this keeps happening to these cars - seeing a lot of posts but no resolutions. Mechanic thinks it's electrical and I'm just scared that this will cost me a lot of money, just getting it diagnosed.

knowledge5106
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Posts: 14
Joined: Thu Aug 25, 2016 5:54 pm
Location: SAN ANTONIO, TX
Vehicle: 2005 Mercury Montego Premier
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Re: failsafe engine mode... throttlebody replacement

Post by knowledge5106 » Tue Oct 18, 2016 7:50 pm

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Dash
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Android diagnostic app
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Codes
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Well I cleaned my Montego's throttle body thoroughly about 3 weeks ago and up until just now as I'm typing this it was running great. Got a great oil change, new oil filter, new air filter every thing was great. Then pow again. Engine Failsafe Mode.

I left the tools that I used last time just in case thus would happen and I disconnected the battery and checked the throttle body and its clean clean clean. Wait 20mins for the codes to clear, put everything back together and same thing. Engine Failsafe Mode. Getting AAA to tow this car back home.

I guess I'll have to get a brand new throttle body.

knowledge5106
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Joined: Thu Aug 25, 2016 5:54 pm
Location: SAN ANTONIO, TX
Vehicle: 2005 Mercury Montego Premier
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Re: failsafe engine mode... throttlebody replacement

Post by knowledge5106 » Wed Oct 26, 2016 10:28 am

Does the entire throttle body have to be replaced or just the sensor? Will have to try and get to work on the Montego again this weekend.

I went to Advanced Auto Parts last night and was told that the throttle body sensor maybe a dealer only part. I hope not!

warment
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Location: Virginia

Re: failsafe engine mode... throttlebody replacement

Post by warment » Wed Oct 26, 2016 12:01 pm

I was not able to find/buy just the TPS sensor that sits on the side of the electrical TB. I believe that you used be able to buy JUST the TPS, but I don't believe that you can buy just the TPS part now.

The TPS however, can be unscrewed (Torx bits) and replaced if you could find just the TPS.
2005 Ford Five Hundred SE
6-spd auto

knowledge5106
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Posts: 14
Joined: Thu Aug 25, 2016 5:54 pm
Location: SAN ANTONIO, TX
Vehicle: 2005 Mercury Montego Premier
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Re: failsafe engine mode... throttlebody replacement

Post by knowledge5106 » Wed Oct 26, 2016 1:08 pm

warment wrote:I was not able to find/buy just the TPS sensor that sits on the side of the electrical TB. I believe that you used be able to buy JUST the TPS, but I don't believe that you can buy just the TPS part now.

The TPS however, can be unscrewed (Torx bits) and replaced if you could find just the TPS.
Thanks for the information. I'm trying to look for decent prices for the correct Throttle Body. Advanced Auto Parts quoted me one that was about $409. That is pricey.

warment
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Location: Virginia

Re: failsafe engine mode... throttlebody replacement

Post by warment » Wed Oct 26, 2016 1:57 pm

I paid much less on ebay
2005 Ford Five Hundred SE
6-spd auto

knowledge5106
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Re: failsafe engine mode... throttlebody replacement

Post by knowledge5106 » Wed Oct 26, 2016 3:31 pm

warment wrote:I paid much less on ebay
Nice! I haven't bought vehicle parts from ebay before. Will have to check that out.

warment
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Re: failsafe engine mode... throttlebody replacement

Post by warment » Wed Oct 26, 2016 5:15 pm

I had a separate thread on here where I gave all of the part numbers...including one for just the tps I think. I will try to find tomorrow when I am at work.
2005 Ford Five Hundred SE
6-spd auto

warment
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Joined: Wed Aug 31, 2005 6:13 am
Location: Virginia

Re: failsafe engine mode... throttlebody replacement

Post by warment » Wed Oct 26, 2016 5:17 pm

Here it is...tps part number in thread...viewtopic.php?f=6&t=19115
2005 Ford Five Hundred SE
6-spd auto

warment
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Re: failsafe engine mode... throttlebody replacement

Post by warment » Thu Oct 27, 2016 5:27 am

$221.41 for a heated style refurbished on ebay. This is what I bought.

http://www.ebay.com/itm/Cardone-67-6007 ... Ej&vxp=mtr
2005 Ford Five Hundred SE
6-spd auto

knowledge5106
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Posts: 14
Joined: Thu Aug 25, 2016 5:54 pm
Location: SAN ANTONIO, TX
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Re: failsafe engine mode... throttlebody replacement

Post by knowledge5106 » Thu Oct 27, 2016 8:49 am

warment wrote:$221.41 for a heated style refurbished on ebay. This is what I bought.

http://www.ebay.com/itm/Cardone-67-6007 ... Ej&vxp=mtr
I'm at work now too. Thank you so much for the information. I will definitely look at that TPS to see if I can find it here locally in San Antonio or online. I really appreciate the link to the TB you bought on Ebay.

Really want to get back to driving this Montego without any issues.

warment
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Joined: Wed Aug 31, 2005 6:13 am
Location: Virginia

Re: failsafe engine mode... throttlebody replacement

Post by warment » Thu Oct 27, 2016 10:01 am

If you can get just the TPS, that would be my recommendation. If you can't get just the TPS, order a reman TB from ebay. If you order the TB, make sure you get what you need/want...a heated TB, or a non-heated TB.
2005 Ford Five Hundred SE
6-spd auto

knowledge5106
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Posts: 14
Joined: Thu Aug 25, 2016 5:54 pm
Location: SAN ANTONIO, TX
Vehicle: 2005 Mercury Montego Premier
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Re: failsafe engine mode... throttlebody replacement

Post by knowledge5106 » Thu Oct 27, 2016 10:33 am

warment wrote:If you can get just the TPS, that would be my recommendation. If you can't get just the TPS, order a reman TB from ebay. If you order the TB, make sure you get what you need/want...a heated TB, or a non-heated TB.
That is the other thing I'm trying to figure out is if it is heated or non heated.

warment
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Re: failsafe engine mode... throttlebody replacement

Post by warment » Thu Oct 27, 2016 10:39 am

Look and see if it has 2 small coolant hose connections on it. One will be on the top left, and one will be on the bottom right.
2005 Ford Five Hundred SE
6-spd auto

warment
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Re: failsafe engine mode... throttlebody replacement

Post by warment » Thu Oct 27, 2016 10:40 am

Heated:
fordthrottlebody.jpg
fordthrottlebody.jpg (64.56 KiB) Viewed 1340 times
2005 Ford Five Hundred SE
6-spd auto

warment
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Posts: 921
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Re: failsafe engine mode... throttlebody replacement

Post by warment » Thu Oct 27, 2016 10:42 am

Non-heated:
fordthrottlebody2.jpg
fordthrottlebody2.jpg (454.99 KiB) Viewed 1340 times
2005 Ford Five Hundred SE
6-spd auto

knowledge5106
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Posts: 14
Joined: Thu Aug 25, 2016 5:54 pm
Location: SAN ANTONIO, TX
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Re: failsafe engine mode... throttlebody replacement

Post by knowledge5106 » Thu Oct 27, 2016 11:05 am

warment wrote:Non-heated:fordthrottlebody2.jpg
I will definitely check that out when I get home tonight. I want to say it is the heated TB. But I will check it out tonight. I really appreciate it.

warment
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Re: failsafe engine mode... throttlebody replacement

Post by warment » Thu Oct 27, 2016 11:22 am

I think you can use either...you just have to connect a bypass hose if you buy a non-heated.
2005 Ford Five Hundred SE
6-spd auto

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