Could anyone help diagnose these issues?

[peppermiller]

Hello forum members. I'm new to car ownership and driving. Haven't had my car long and I've run into some issues I'm hoping someone can help me with.

The first issue is my Fusion 1.4tdci doesn't appear to be revving properly. It's very slow to rev up and when it does it sort of hangs before revving down again, not very responsive at all. I've tried injector cleaner, engine flush new filter and oil, fuel filter and cleaned out the mav sensor but still got the problem?

Second issue is with the airbag light. Haven't had the time to take the seats out but I've had a quick look around and nothing appears out of place. The only thing I can see is there's a cylinder by the belt clip on the passenger seat but nothing on the drivers seat. I'm wondering if someone has taken it out and that's what's causing the problem?

I'd grateful for any help.

Pippa

 

[unofix]

Hello Pippa, the revving problem sounds like an issue with the throttle body. It may just be sticking and want taking apart and cleaned or it maybe a faulty throttle position sensor.

The Airbag light is a bigger problem, as it is indicating a failure of the safety system and therefore it needs fixed ASAP, plus your car will fail its MOT. Do not start pulling seats out, the cylinder that you mention contains an explosive charge to fire the seatbelt pre-tensioner in the event of an accident.

You need to connect up to the OBDii port with a code reader or use ForScan and a laptop to read  the fault code which will tell you why the light is on.

[peppermiller]

On 4/25/2021 at 9:24 AM, unofix said:

Hello Pippa, the revving problem sounds like an issue with the throttle body. It may just be sticking and want taking apart and cleaned or it maybe a faulty throttle position sensor.

The Airbag light is a bigger problem, as it is indicating a failure of the safety system and therefore it needs fixed ASAP, plus your car will fail its MOT. Do not start pulling seats out, the cylinder that you mention contains an explosive charge to fire the seatbelt pre-tensioner in the event of an accident.

You need to connect up to the OBDii port with a code reader or use ForScan and a laptop to read  the fault code which will tell you why the light is on.

Hi unofix. Thanks for the reply. I think it's likely to be the throttle body because the problem is intermittent. Sometimes the throttle response is as you'd expect and other times it's like a wet *****. I shall take your advise and have a look tomorrow with a can of carburettor cleaner.

Found out today the drivers seat doesn't have the pre-tensioner in the same location is the passenger side, it's located in the belt retractor thing - don't know what it's called. 

My brother has ordered a ELM327 so hopefully that'll help sort these problems out.

[fullwavebridge]

To add if this is any help ? , i had a throttle response issue. 2005 1.4tdci

Eac fail, initially it was intermittent but then became permanent but without eac fail message.

No codes appeared in diagnostics, i replaced my obd port scanner to a better modern & quality type - still no fault codes.

Took an educated guess after researching and a new replacement MAF sensor cured the problem.

I noted that the car would rev fine when static, but setting off driving there was hardly anything there in throttle response.

[peppermiller]

On 4/27/2021 at 12:37 PM, fullwavebridge said:

To add if this is any help ? , i had a throttle response issue. 2005 1.4tdci

Eac fail, initially it was intermittent but then became permanent but without eac fail message.

No codes appeared in diagnostics, i replaced my obd port scanner to a better modern & quality type - still no fault codes.

Took an educated guess after researching and a new replacement MAF sensor cured the problem.

I noted that the car would rev fine when static, but setting off driving there was hardly anything there in throttle response.

Thanks for posting. I've had the MAF off and cleaned it but made no difference. Seems to be an intermittent problem with my motor, one minute it's fine, then it's not, revs hang when changing gear and painfully slow on the uptake. It's a pain so will try a new MAF.  

[peppermiller]

14 hours ago, peppermiller said:

Thanks for posting. I've had the MAF off and cleaned it but made no difference. Seems to be an intermittent problem with my motor, one minute it's fine, then it's not, revs hang when changing gear and painfully slow on the uptake. It's a pain so will try a new MAF.  

99% sure it's MAF related. Checked it with Forscan and it's reading around 296g/s at idle, a know good unit is around 6.20g/s.

[fullwavebridge]

wasn't there some rubber hose under the battery box that splits and caused problems similar to this ?

[peppermiller]

1 hour ago, fullwavebridge said:

wasn't there some rubber hose under the battery box that splits and caused problems similar to this ?

There are some vacuum pipes near the battery and fuel filter, these were OK last time I checked. Don't know if there are any under the battery box? Best do a double check tomorrow!