Car: 2001 Golf TDI Automatic (ALH)
Problem: Car always starts very easily but surges when at idle
Until at full operating temperature then only does it some time.
CEL light comes on sometimes, usually within 2 minutes
of starting, if cleared does not come on again sometimes
for days.
Code on CEL is P1562 "Quantity adjuster upper limit reached"
What I've done: Ran 1 can of diesel purge straight through engine
Reset timing on timing belt (was off just a little)
Checked injection timing and it was accurate.
Cleaned out intake manifold and reinstalled
Removed cat.
None of the things I have done so far have made the problem any better or worse. The intake cleaning improved power and performance quite alot.
Still no improvement on the surging and CEL. Car runs ok other than the surging at idle when cold, sometimes surges when at operating temps but very rarely.
Does anyone have a direction to point me in? What to look for or what could possibly be wrong.
Problem: Car always starts very easily but surges when at idle
Until at full operating temperature then only does it some time.
CEL light comes on sometimes, usually within 2 minutes
of starting, if cleared does not come on again sometimes
for days.
Code on CEL is P1562 "Quantity adjuster upper limit reached"
What I've done: Ran 1 can of diesel purge straight through engine
Reset timing on timing belt (was off just a little)
Checked injection timing and it was accurate.
Cleaned out intake manifold and reinstalled
Removed cat.
None of the things I have done so far have made the problem any better or worse. The intake cleaning improved power and performance quite alot.
Still no improvement on the surging and CEL. Car runs ok other than the surging at idle when cold, sometimes surges when at operating temps but very rarely.
Does anyone have a direction to point me in? What to look for or what could possibly be wrong.