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Feels Slower After Service


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#1 johnS

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Posted 30 May 2011 - 04:04 PM

Hello,

Just had a full service, engine oil, spark plugs, oil filter, air filter, fuel filter and pollen filter were changed.

I'm not sure what it is, but after the service the car feels slightly slower than it did before. I dont think it's the spark plugs, but I have no idea what else could cause the slowness out of the above?

The car seems to have better acceleration in higher RPM's, but at around the rpm that I am used to feeling acceleration you can now hardly feel anything. Car has around 41,000mls


Thanks,

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#2 johnH

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Posted 30 May 2011 - 06:24 PM

was this service carried out by a ford ind or dealer and was there an ECU update?

chances are the battery may have been disconnected and the BSI had reset so it will need learning to your driving style again...im not sure on this but ive heard about it.

#3 johnS

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Posted 30 May 2011 - 09:12 PM

was this service carried out by a ford ind or dealer and was there an ECU update?

chances are the battery may have been disconnected and the BSI had reset so it will need learning to your driving style again...im not sure on this but ive heard about it.



Thanks for your reply.

It was not a Ford dealer it was carried out by our local garage.

And i'm pretty sure the ECU was not reset as I have a tracker on board and it did not reset as I was checking when it was in for a service.

#4 jeebowhite

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Posted 31 May 2011 - 08:15 AM

Define slower?

Underpowered? generally less responsive? major lag on throttle to acceleration?

#5 johnS

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Posted 31 May 2011 - 10:57 AM

Define slower?

Underpowered? generally less responsive? major lag on throttle to acceleration?



theres no lag no, i'll give an example.

Before I could feel a good pull when I put my foot down at around 1,500rpm, now when I do it, can hardly notice any acceleration untill later on in the rev range

#6 jeebowhite

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Posted 31 May 2011 - 11:53 AM

hmmm, any warning lights? or error codes?

My gut says turbo lag, and potentially a turbo issue, as turbo kicks in around 15-1800 revs...

#7 johnS

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Posted 31 May 2011 - 12:55 PM

hmmm, any warning lights? or error codes?

My gut says turbo lag, and potentially a turbo issue, as turbo kicks in around 15-1800 revs...



lol no I have my scanner and there are no codes. And I dont think I have a turbo?

Sorry forgot to mention it;s a 1.6L petrol engine

#8 jeebowhite

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Posted 31 May 2011 - 01:20 PM

Petrol... I thought it was a diesel... no turbo then!

so no lights, no codes, no turbo... maybe a sensor is the only thing I can think of, maybe MAF or Oxygen sensor... but then again I would have thought a code would have been thrown up!

Im struggling on where to go from here, maybe try a better grade fuel for your next tank, if it continues then its maybe worth looking further into it?

#9 johnS

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Posted 31 May 2011 - 01:27 PM

Petrol... I thought it was a diesel... no turbo then!

so no lights, no codes, no turbo... maybe a sensor is the only thing I can think of, maybe MAF or Oxygen sensor... but then again I would have thought a code would have been thrown up!

Im struggling on where to go from here, maybe try a better grade fuel for your next tank, if it continues then its maybe worth looking further into it?



but my thinking is that it's something that they changed or done but I dont know what!

cant an air filter do something similar? or fuel filters? Maybe it is spark plugs but I havent had enough time to see weather the other side effect of the spark plugs is happening (lower fuel mileage)

#10 Barry_

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Posted 31 May 2011 - 01:36 PM

Maybe the lower end is the same but the top end has improved but you notice it as the low end dropping off (if that makes sense)

The Zetec kicks in around 2/3'000 revs i would of thought - maybe the variable timing part of this is now working better.

My 1.8 zetec (escort) only really kicks off Acceleration wize around 2.5/3 thousand revs.

Only say this as you would expect improvement really not it being worse than before.

#11 johnS

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Posted 31 May 2011 - 01:45 PM

Maybe the lower end is the same but the top end has improved but you notice it as the low end dropping off (if that makes sense)

The Zetec kicks in around 2/3'000 revs i would of thought - maybe the variable timing part of this is now working better.

My 1.8 zetec (escort) only really kicks off Acceleration wize around 2.5/3 thousand revs.

Only say this as you would expect improvement really not it being worse than before.



possibly, but I still notice that when I floored the pedal there was more of a pull even at 1,300rpm in 2nd gear, doing the same after the service I do the same and can hardly feel a pull till later on

#12 Barry_

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Posted 31 May 2011 - 02:57 PM

Maybe something to do with Airflow into engine???

Have a check of the air filter, maybe they done something silly like left a rag in there blocking the flow (unlikely i know)

#13 jeebowhite

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Posted 31 May 2011 - 03:27 PM

If they fitted a filter the wrong way round that can cause some issues, so it may be worth taking it back and getting them to check it all over, but its too much coincidence that since they did the work its all changed. It could be worst case that they screwed it up by fitting something and damaging something else?

#14 johnS

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Posted 31 May 2011 - 03:51 PM

Thank you people for the reply.

I havent yet checked under the bonnet since before the service, so I will definatly check under there soon. Just to check, how do you open the air filter box to check the air filter?

#15 johnH

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Posted 01 June 2011 - 05:50 PM

just a few screws to open the box. is your throttle control a tension wire or electronic? in my 307 i had a wire that would pull to make the engine rev faster when it was pulled by the pedal.

anyways a garage moved a retaining clip for the wire, drove like a sack of dirty underpants. top speed was 100mph or 70mph depending on how you want to look at it ;) moved the clip and the car was a rocket after.

also does you revs and speed go up together...if not you might have clutch issues.

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