ST170 won't rev above 5000rpm under load now fixed

TomStarkey · 12-03-2010, 10:53 AM

Hi, my ST170 (2003) refuses to rev above 5000rpm when in 1st to 6th. it rises fine to 4,500ish then it just stutters and holds back. It sounds like its running on all 4 cylinders when im idleing so im guessing its not ignition related. Is its likely to be the fuel pump, and if i plugged a code reader in would the car give a code?

Further info
64k on clock
serviced at 59k- planned to service again over easter
runs on shell v-power
no warning lights
has bluefin set up for correct fuel

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20fiesta09 · 12-03-2010, 11:34 AM

duss it rev past 5k when the car is staionary ?
sounds like it could be the fuel pump, it happend on my dads car but hisj ust ran like a bag of shite it wouldnt rev at all but when it was staionary it would rev on too the red. and his was around the same millage too and also he didnt have any warning lights come on.
hope that helps mate

TomStarkey · 12-03-2010, 11:37 AM

Yeah when its in neutral it revs fine, but i do feel like abit of a chav reving the engine in the middle of the street

cheers for the input

TomStarkey · 12-03-2010, 08:34 PM

also it only seems to happen wen the engines warmed up. Its fine(ish) when cold. What does that mean????

paul xr2 · 13-03-2010, 10:59 AM

more likely to be the maf sensor up the spout my 1.8 focus was doing the same until i replaced the maf for a new one

TomStarkey · 13-03-2010, 02:12 PM

and now today my car seems better. im down to half a tank and its kind of just slowing down after 5000rpm, rather than hitting an un-passable wall. wierd.

About the MAF sensor, can it just be cleaned or reset?

cheers

Dimitris013 · 13-03-2010, 02:31 PM

Maf sensors cant clean up or reset as you say.
You just by a new one.
Anyway my opinion on the problem you have doesn't seem to me like maf sensor.
Good thing to do try one before you buy it...

TomStarkey · 13-03-2010, 11:20 PM

well I carb cleaned the MAF and throttle body and it may be unrelated but the car feels alot better now. It still doesn't feel right though so I think a fuel pump change is needed. I might even treat my car to a sytec uprated fuel pump

Paul_RS · 14-03-2010, 06:52 PM

Mates car had a similar propblem and it turned out to be the fuel pump on his. He only had the problem with less than 1/2 a tank of fuel though.

white2lsr · 14-03-2010, 07:02 PM

Quote:

Originally Posted by TomStarkey

well I carb cleaned the MAF and throttle body and it may be unrelated but the car feels alot better now. It still doesn't feel right though so I think a fuel pump change is needed. I might even treat my car to a sytec uprated fuel pump

have you even had diagniostics on the car

sounds the same as mine and it turned out to be the fpcm

TomStarkey · 15-03-2010, 03:04 AM

The cars showing no error codes at all, its booked in for a looking at next week. I'll have to see what happens from there.

Iktank · 15-03-2010, 07:39 AM

had the same - replaced IMRC located on the bulkhead (shiny oblong box)

TomStarkey · 15-03-2010, 05:19 PM

So many things that could be wrong with it. Damn these modern cars

TomStarkey · 17-03-2010, 12:43 AM

Also if it turns out to be the coil pack or the fuel pump would having uprated ones (actually cheaper???) be bad for the car?

botters · 17-03-2010, 12:47 AM

have you checked the oil? when they get really low it can stop the variable valve timing from working causing similar symptoms

TomStarkey · 17-03-2010, 12:55 AM

yup the oils good, and the pressure is between 1/2 and 3/4 depending on how fast im going.

daviddunlop83 · 17-03-2010, 12:20 PM

Quote:

Originally Posted by Paul_RS

Mates car had a similar propblem and it turned out to be the fuel pump on his. He only had the problem with less than 1/2 a tank of fuel though.

Mine rev'ed fine, it cut out and then went again at round right right hand corners or round roundabouts with less than 1/2 a tank

~nomad~ · 17-03-2010, 12:29 PM

Quote:

Originally Posted by Iktank

had the same - replaced IMRC located on the bulkhead (shiny oblong box)

almost defo this

Iktank · 17-03-2010, 04:22 PM

also check the electrics from the IMRC the cable runs under the headlight, there is sometimes a poor connection under there

TomStarkey · 17-03-2010, 05:07 PM

Just checked the IMRC cables and they both look fine from the outside

Iktank · 17-03-2010, 05:47 PM

one othe look in the engine bay, top of the rocker cover drivers side, cables enter here onto the variable valve timing solonoid, check these are ok, had these rub through because a monkey many moons ago who serviced my car and changed the plugs did not run lay the cable back properly, also the plug here can work loose.

TomStarkey · 17-03-2010, 06:01 PM

the protective shief covering the wires looks abit worn, I might get a new one, but the wires all look good. Thanks for the ideas anyway.

Iktank · 17-03-2010, 06:13 PM

most prob the IMRC control unit, but just make sure the cables are OK, the cables that run under the headlamp cant be seen, give them a gentle tug been known to come apart at this point. sorry cant be of more help.

TomStarkey · 17-03-2010, 06:26 PM

cable feels like its attached to something when I pull it. Was worth a try

Iktank · 17-03-2010, 06:30 PM

hope you sort it, if you decide to replace the IMRC valve I think is costs around £120, easy to change yourself. take care Tank

Albino Deano · 17-03-2010, 08:43 PM

Had the exact problem with mine mate two weeks ago wouldnt rev checked everything turned out to be imrc box on the bulk head common fault with the st cost me new from ford £172 runs like a dream now.

TomStarkey · 17-03-2010, 09:21 PM

cheers, I'll make sure the mechanics have a good look at it to see if it definitely is the fault. Can't wait to have her up to full power again.

TomStarkey · 18-03-2010, 07:32 PM

I will also post back here with my fix and full list of symptoms if I do get it working again, hopefully, fingers crossed.

TomStarkey · 19-03-2010, 04:37 PM

Well today I changed the coil pack and the car now seems alot better. Im still not convinced that the car issue free but it rev's up to 7000rpm with ease now.

Old Coil

New Coil, in lovely yellow :-(

bamba · 19-04-2010, 04:35 PM

hi tom.did the coil pack cure the problem you were having.if not have you tried anything else yet
cheers GLYN

TomStarkey · 19-04-2010, 04:52 PM

Since I changed the coil pack the car seems fine. I 'cleaned' The MAF with carb cleaner on about 1/4 throttle as well but I think it was the coil pack that cured it in the end.

bamba · 19-04-2010, 07:31 PM

was that an uprated coil you put on tom.if so where did you get it from and how much did it cost?pm if you'd prefer.
cheers GLYN

TomStarkey · 19-04-2010, 08:23 PM

Quote:

Originally Posted by bamba

was that an uprated coil you put on tom.if so where did you get it from and how much did it cost?pm if you'd prefer.
cheers GLYN

£75 from PumaBuild, No more expensive than the standard coil, and since that's prone to fail I thought I'd get an uprated one. only problem is that its yellow

TomStarkey · 05-05-2010, 09:12 PM

Fixed - if people have similar problems

13-03-2010, 02:31 PM	#7
Dimitris013 Ford Mondeo ST225 Garage is empty, add now Trader Score: (0) Join Date: Nov 2008 Location: Russia, Moscow Posts: 9 Rep Power: 0	Maf sensors cant clean up or reset as you say. You just by a new one. Anyway my opinion on the problem you have doesn't seem to me like maf sensor. Good thing to do try one before you buy it... Last edited by Dimitris013; 13-03-2010 at 02:34 PM.

14-03-2010, 06:52 PM	#9
Paul_RS PassionFord Post Whore!! Garage is empty, add now Trader Score: (4) Join Date: May 2004 Location: Bangor, Northern Ireland Posts: 6,051 Rep Power: 14	Mates car had a similar propblem and it turned out to be the fuel pump on his. He only had the problem with less than 1/2 a tank of fuel though. __________________

15-03-2010, 07:39 AM	#12
Iktank Virgin Garage is empty, add now Trader Score: (0) Join Date: Mar 2010 Location: S Wales Posts: 8 Rep Power: 0	on mime it was the IMRC had the same - replaced IMRC located on the bulkhead (shiny oblong box)

17-03-2010, 08:43 PM	#26
Albino Deano FROZEN WHITE FRS No2676 Garage is empty, add now Trader Score: (0) Join Date: Dec 2008 Location: ALCATRAZ ISLAND, GUERNSEY,C.I Posts: 463 Rep Power: 4	Had the exact problem with mine mate two weeks ago wouldnt rev checked everything turned out to be imrc box on the bulk head common fault with the st cost me new from ford £172 runs like a dream now. __________________ THE SILVER DREAM MACHINE GONE BUT NOT FORGOTTEN MEMBER OF TEAM O'LOCK RACING. No 78 WWW.WANT2BJUSTLIKEME.COM:: WWW.CREATIVE CARBON.COM

19-04-2010, 04:35 PM	#30
bamba Wahay!! I've lost my Virginity!! Garage is empty, add now Trader Score: (0) Join Date: Sep 2007 Location: swadlincote Posts: 87 Rep Power: 5	hi tom.did the coil pack cure the problem you were having.if not have you tried anything else yet cheers GLYN __________________ a foot yard and a thick wide

12-03-2010, 11:34 AM	#2
20fiesta09 Wahay!! I've lost my Virginity!! Garage is empty, add now Trader Score: (0) Join Date: Dec 2009 Location: Kilmarnock Posts: 55 Rep Power: 0	duss it rev past 5k when the car is staionary ? sounds like it could be the fuel pump, it happend on my dads car but hisj ust ran like a bag of shite it wouldnt rev at all but when it was staionary it would rev on too the red. and his was around the same millage too and also he didnt have any warning lights come on. hope that helps mate

12-03-2010, 11:37 AM	#3
TomStarkey Part of the Furniture Garage is empty, add now Trader Score: (0) Join Date: Jan 2010 Location: North Wales Posts: 158 Rep Power: 3	Yeah when its in neutral it revs fine, but i do feel like abit of a chav reving the engine in the middle of the street cheers for the input

12-03-2010, 08:34 PM	#4
TomStarkey Part of the Furniture Garage is empty, add now Trader Score: (0) Join Date: Jan 2010 Location: North Wales Posts: 158 Rep Power: 3	also it only seems to happen wen the engines warmed up. Its fine(ish) when cold. What does that mean????

13-03-2010, 10:59 AM	#5
paul xr2 Wahay!! I've lost my Virginity!! Garage is empty, add now Trader Score: (0) Join Date: Jun 2003 Location: worcester Posts: 75 Rep Power: 9	more likely to be the maf sensor up the spout my 1.8 focus was doing the same until i replaced the maf for a new one

13-03-2010, 02:12 PM	#6
TomStarkey Part of the Furniture Garage is empty, add now Trader Score: (0) Join Date: Jan 2010 Location: North Wales Posts: 158 Rep Power: 3	and now today my car seems better. im down to half a tank and its kind of just slowing down after 5000rpm, rather than hitting an un-passable wall. wierd. About the MAF sensor, can it just be cleaned or reset? cheers

13-03-2010, 11:20 PM	#8
TomStarkey Part of the Furniture Garage is empty, add now Trader Score: (0) Join Date: Jan 2010 Location: North Wales Posts: 158 Rep Power: 3	well I carb cleaned the MAF and throttle body and it may be unrelated but the car feels alot better now. It still doesn't feel right though so I think a fuel pump change is needed. I might even treat my car to a sytec uprated fuel pump

15-03-2010, 03:04 AM	#11
TomStarkey Part of the Furniture Garage is empty, add now Trader Score: (0) Join Date: Jan 2010 Location: North Wales Posts: 158 Rep Power: 3	The cars showing no error codes at all, its booked in for a looking at next week. I'll have to see what happens from there.

15-03-2010, 05:19 PM	#13
TomStarkey Part of the Furniture Garage is empty, add now Trader Score: (0) Join Date: Jan 2010 Location: North Wales Posts: 158 Rep Power: 3	So many things that could be wrong with it. Damn these modern cars

17-03-2010, 12:43 AM	#14
TomStarkey Part of the Furniture Garage is empty, add now Trader Score: (0) Join Date: Jan 2010 Location: North Wales Posts: 158 Rep Power: 3	Also if it turns out to be the coil pack or the fuel pump would having uprated ones (actually cheaper???) be bad for the car?

17-03-2010, 12:47 AM	#15
botters competant bodger 1989 ford escort My Garage Trader Score: (0) Join Date: May 2009 Location: preston Posts: 3,441 Rep Power: 6	have you checked the oil? when they get really low it can stop the variable valve timing from working causing similar symptoms

17-03-2010, 12:55 AM	#16
TomStarkey Part of the Furniture Garage is empty, add now Trader Score: (0) Join Date: Jan 2010 Location: North Wales Posts: 158 Rep Power: 3	yup the oils good, and the pressure is between 1/2 and 3/4 depending on how fast im going.

17-03-2010, 04:22 PM	#19
Iktank Virgin Garage is empty, add now Trader Score: (0) Join Date: Mar 2010 Location: S Wales Posts: 8 Rep Power: 0	also check the electrics from the IMRC the cable runs under the headlight, there is sometimes a poor connection under there

17-03-2010, 05:07 PM	#20
TomStarkey Part of the Furniture Garage is empty, add now Trader Score: (0) Join Date: Jan 2010 Location: North Wales Posts: 158 Rep Power: 3	Just checked the IMRC cables and they both look fine from the outside

17-03-2010, 05:47 PM	#21
Iktank Virgin Garage is empty, add now Trader Score: (0) Join Date: Mar 2010 Location: S Wales Posts: 8 Rep Power: 0	one othe look in the engine bay, top of the rocker cover drivers side, cables enter here onto the variable valve timing solonoid, check these are ok, had these rub through because a monkey many moons ago who serviced my car and changed the plugs did not run lay the cable back properly, also the plug here can work loose.

17-03-2010, 06:01 PM	#22
TomStarkey Part of the Furniture Garage is empty, add now Trader Score: (0) Join Date: Jan 2010 Location: North Wales Posts: 158 Rep Power: 3	the protective shief covering the wires looks abit worn, I might get a new one, but the wires all look good. Thanks for the ideas anyway.

17-03-2010, 06:13 PM	#23
Iktank Virgin Garage is empty, add now Trader Score: (0) Join Date: Mar 2010 Location: S Wales Posts: 8 Rep Power: 0	most prob the IMRC control unit, but just make sure the cables are OK, the cables that run under the headlamp cant be seen, give them a gentle tug been known to come apart at this point. sorry cant be of more help.

17-03-2010, 06:26 PM	#24
TomStarkey Part of the Furniture Garage is empty, add now Trader Score: (0) Join Date: Jan 2010 Location: North Wales Posts: 158 Rep Power: 3	cable feels like its attached to something when I pull it. Was worth a try

17-03-2010, 06:30 PM	#25
Iktank Virgin Garage is empty, add now Trader Score: (0) Join Date: Mar 2010 Location: S Wales Posts: 8 Rep Power: 0	hope you sort it, if you decide to replace the IMRC valve I think is costs around £120, easy to change yourself. take care Tank

17-03-2010, 09:21 PM	#27
TomStarkey Part of the Furniture Garage is empty, add now Trader Score: (0) Join Date: Jan 2010 Location: North Wales Posts: 158 Rep Power: 3	cheers, I'll make sure the mechanics have a good look at it to see if it definitely is the fault. Can't wait to have her up to full power again.

18-03-2010, 07:32 PM	#28
TomStarkey Part of the Furniture Garage is empty, add now Trader Score: (0) Join Date: Jan 2010 Location: North Wales Posts: 158 Rep Power: 3	I will also post back here with my fix and full list of symptoms if I do get it working again, hopefully, fingers crossed.

19-03-2010, 04:37 PM	#29
TomStarkey Part of the Furniture Garage is empty, add now Trader Score: (0) Join Date: Jan 2010 Location: North Wales Posts: 158 Rep Power: 3	Well today I changed the coil pack and the car now seems alot better. Im still not convinced that the car issue free but it rev's up to 7000rpm with ease now. Old Coil New Coil, in lovely yellow :-(

19-04-2010, 04:52 PM	#31
TomStarkey Part of the Furniture Garage is empty, add now Trader Score: (0) Join Date: Jan 2010 Location: North Wales Posts: 158 Rep Power: 3	Since I changed the coil pack the car seems fine. I 'cleaned' The MAF with carb cleaner on about 1/4 throttle as well but I think it was the coil pack that cured it in the end.

19-04-2010, 07:31 PM	#32
bamba Wahay!! I've lost my Virginity!! Garage is empty, add now Trader Score: (0) Join Date: Sep 2007 Location: swadlincote Posts: 87 Rep Power: 5	was that an uprated coil you put on tom.if so where did you get it from and how much did it cost?pm if you'd prefer. cheers GLYN __________________ a foot yard and a thick wide

05-05-2010, 09:12 PM	#34
TomStarkey Part of the Furniture Garage is empty, add now Trader Score: (0) Join Date: Jan 2010 Location: North Wales Posts: 158 Rep Power: 3	Fixed - if people have similar problems

05-05-2010, 09:12 PM
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