Chipped car reverting back to standard now and them.

[imported_highlander1]

My mates Golf iv 1.8t 2001 aum has started to revert back to standard on occation, Has anyone had a problem like this or have any thoughts on it.
Cheers,
Deano.
P.S switching the ignition on and off solves the problem.

 

[marctwo]

I'm no expert but I don't think the software they load could 'revert back to standard' unless it was a trial. If it's loaded on the ECU then it's not going to go away again. I would bet it's a fault with something else that is causing a loss of power.

 

[jojo]

Are you sure it isnt going into 'limp' mode?

 

[imported_monkeytrousers]

Agree with the others. It's a permanent code (unless reset by a technician). More likely to be a dodgy mechanical part than the remap.

 

[DavidR]

Overboost leading to ECU failsafe mode 0.5bar reset by ignition cycling sounds like the obvious cause...

Other than that, failed sensor, boost leak etc...

 

[imported_Pures3work]

Limp mode I reckon. Although if you have more than 1 remap that you can set via your cruise control stalk, you can change the mapping back to standard whilst driving unless you have a lock in place (like the APR remaps).

However, all signs point to overboost and limp mode.

 

[imported_highlander1]

Thanks folks, bit more info that might help solve this problem.... The car also loses peak boost while accelerating from low revs in a high gear creating a surge effect. Doesn't seem to do it when flat out through the gears. Had the boost monitored by local vw specalist, diagnostic showed no faults but did show a loss of boost from 2200 to 2000 units when this was happening (not sure what the units are.duhh?) this symptom was checked before this latest fault appeared!

 

[imported_kennyf]

I had this prob and initially blamed the remap. However weeks later bit the bullet and bought a new MAF sensor and all is well. Think somtimes its mapped that close to the limit that a dirty/old MAF can cause limp mode to kick in.

Limp mode is the definitive pain in the ****!