Hi all my first post here after being told to join I have a 2000 w reg polo 1.4 16v and I'm getting fault code p1553 barometric/manifold pressure not plausible
After taking advice I've changed
Egr valve
Map sensor
Throttle body (set up as well )
Checked all vacuum pipes (replaced brake servo pipe due to cracks )
Checked timing (all spot on )
Coil pack
Blew out all pipes going to purge valve /canister etc
The problem I'm getting is the epc light comes on when driving if I hold a constant speed and it goes a bit jerkey turn key off and on and it's sorted again until I stick to a constant speed again it's ok accellarating and slowing just seems to be when staying at a constant speed .
Really am stumped what to try next
Help needed asap please desperate
- alexperkins
- Site Admin
- Posts: 14866
- Joined: Sat Nov 11, 2006 5:29 pm
- Drives: 91 Golf GTI, 01 TT 225, 54 T5 174
- Location: Poole, Dorset, UK.
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Re: Help needed asap please desperate
Are you getting any other faulty codes?
- alexperkins
- Site Admin
- Posts: 14866
- Joined: Sat Nov 11, 2006 5:29 pm
- Drives: 91 Golf GTI, 01 TT 225, 54 T5 174
- Location: Poole, Dorset, UK.
- Contact:
Re: Help needed asap please desperate
This is normally caused by a dirty throttle body. Has it been thoroughly cleaned on both sides and adaptation performed?
Re: Help needed asap please desperate
Yes both cleaned really well and reset and adaption done
- alexperkins
- Site Admin
- Posts: 14866
- Joined: Sat Nov 11, 2006 5:29 pm
- Drives: 91 Golf GTI, 01 TT 225, 54 T5 174
- Location: Poole, Dorset, UK.
- Contact:
Re: Help needed asap please desperate
Was the map sensor new?
Not plausible sounds like the signal isnt getting rear properly from the sensor. Implies broken wiring or a dodgy sensor.
Not plausible sounds like the signal isnt getting rear properly from the sensor. Implies broken wiring or a dodgy sensor.
Re: Help needed asap please desperate
Hi yes brand new
- alexperkins
- Site Admin
- Posts: 14866
- Joined: Sat Nov 11, 2006 5:29 pm
- Drives: 91 Golf GTI, 01 TT 225, 54 T5 174
- Location: Poole, Dorset, UK.
- Contact:
Re: Help needed asap please desperate
Is the map sensor proving a reading in vcds