Technical Dreaded P0101 mystery
- Thread starter Griffj
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Technical Dreaded P0101 mystery
Did you use a smoke machine?
Someone on here made a DIY smoke tester
and it worked apparently.
and it worked apparently.
Evap Valve Solinoid | FIAT 500 (2007+)
I have the p0101-62 error, (2012 1.2 500) when revs drop to tick over the eml and yellow triangle come on then stop start My question isnt how to fix it but more what is it, what does the valve do? Does it just take petrol vapour/fuel back to the tank? When using MES the evap value sits at 0...
www.fiatforum.com
The extra load is intermittent so in theory should hiccup when the compressor is off? As it doesn't I'd suggest the ecu knows the ac "is required " and uses a modified map just sufficient to mask the cause?
So where / what should I be looking for bud?
Would this do?
Attachments
Honestly if it runs OK with ac on just leave it( on ) and have the ac recharged to ensure it keeps working ? You'll probably chase the issue for some time to no avail.
Not an option really, need to get it sorted so I can sell it, my daughter no longer wants to drive it. Doubt I'd get much for it selling with an unknown fault.
You don't need anything.
After car has been left for several hours , do not start car......press brake pedal - is it hard to press ? Or go down easily like it does when engine running?
I'll try that tonight. Cheers.
That tests the brake servo holds vacuum.
The pipe between servo and manifold needs examining separately
So sell it in summer with the ac on?
If the buyer ever comes back asking just tell them leave the ac on and you're "probably " all good?
I strongly suggest you run the car over the summer with ac on and see how it behaves, it it's consistently OK then I'd suggest a ecu issue, but if it runs fine leave it alone and keep it, cost of replacing is considerable?
Question you sell the car for say £1500, the new owner knows its faulty but looks here, a suggestion it might be ok if you simply press one switch, which does seem to fix it, happy days for new owner, now do you regret selling? If one button press seems to sort things you'd be mad to then spend £5k on someone else's problems another second hand car?
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The MOT is due soon and with the engine light on and in limp its an instant failure, speaking to the tester the other day (had to get my car MOTd) he said they (him) always turns the AC off for the emissions test, so therefore, as soon as he does the cars failed. Also the cars valued at around £4.5k so getting 1.5k for it would be a disaster.
Also, she starts Uni is September, so needs a reliable car as she'll be commuting each day. At the moment she won't drive it as its so unreliable, so it has to go, I'll be getting her a practically new car for peace of mind.
So. Update.
It's been in a auto electronic specialist for 10 weeks+.
They have done multiple diagnostics on the car, have cloned the ECU, sent away both the BCM and ABS modules for testing, had most of the loom apart under the bonnet and behind the dash, have performed literally 100s of continuity tests across multiple circuits, have individually bench tested parts that may have been suspected, and involved multiple specialist testing companies to check resistances, parameters etc.
They can't find a single thing wrong, yet the problem still persists, aircon off = limp, aircon on, runs fine... ffs.
It's been in a auto electronic specialist for 10 weeks+.
They have done multiple diagnostics on the car, have cloned the ECU, sent away both the BCM and ABS modules for testing, had most of the loom apart under the bonnet and behind the dash, have performed literally 100s of continuity tests across multiple circuits, have individually bench tested parts that may have been suspected, and involved multiple specialist testing companies to check resistances, parameters etc.
They can't find a single thing wrong, yet the problem still persists, aircon off = limp, aircon on, runs fine... ffs.
