Low Oil Pressure warning - Intermittent

**tmoram86** · 09-09-2017,06:13 PM

Yeah they've definitely been good about throwing new parts at it without question!!

Taking it back on Monday again and will ask for an oil pressure test and show them what you've advised re. balancer drive. Do you think the best thing to do is suggest that they install the kit linked above by Gazwould?

Taken it out today, did 80 miles in it and no oil pressure alarm until I turned into my street! Strange that it comes and goes like that...

**Gazwould** · 09-09-2017,06:40 PM

Every 77mm PD or CR oil pump drive has to be rectified with proper engineering .

You really should NOT be driving that car !

**nevo** · 09-09-2017,07:33 PM

Not used them myself but he does speak highly of them,there's a lot of people out there doing this job so I would go on his recommendation.,if the pressure test is ok I would give the sender and its connector/ wiring a good looking at.

**tmoram86** · 10-09-2017,09:10 AM

Does the alarm only mean I'm not getting oil pressure at that point in time? Like yesterday, after 80 miles (when I got home) the oil pressure alarm came on... does that mean sufficient oil was being delivered into the engine the rest of the time?
Ideally I wouldn't drive it until it's all fixed, but we're a busy family with no other vehicle at the moment.
The car is going back to the garage 1st thing Monday morning, and they're giving me a courtesy car. I'll definitely relay some of the advice I've been give here and see if I can get them to install a new balance shaft module... presumably my car (2007 BRE engine) has the chain driven one that should be replaced with the gear driven one?
The only other thing I've seen that could affect oil pressure that hasn't already been looked at is the oil filter housing.

**nevo** · 10-09-2017,09:24 AM

Best not to drive it,the pressure switch will alarm at a low threshold maybe 15 psi,not sure of the spec,if its a genuine low pressure you risk screwing up the turbo at least,2007 model should have the gear driven set up.

**tmoram86** · 10-09-2017,09:46 AM

Ok thanks for the advice. I thought the gear driven ones were supposed to be OK, or is it the length and contact of the hex shaft that drives the oil pump that is the issue?

**Gazwould** · 10-09-2017,09:53 AM

Gear doesn't have the chain driven chain tensioner plastic part that fails whipping the teeth to extinction , metal bits in the oil and loss of oil pump drive .

So chain is double trouble as it's both tensioner and 77mm hex drive , primarily caused by the balancer shaft keyway fit and soft material .

Gear , just the 77mm but serious issue .

**nevo** · 10-09-2017,10:11 AM

Basically the key drive is a dumb *** design, but once upgraded will be ok.I suspect once your oil is hot and thin its hovering on the pressure switch threshold.

**Gazwould** · 10-09-2017,10:17 AM

The only way to explain it is they designed it to fail well out of warranty .

Planned obsolescence .

**tmoram86** · 10-09-2017,10:19 AM

So, sorry if I'm asking dumb questions... but even if they replace the whole geared balance shaft module it would still have the problematic 77mm hex? So I'd need to buy the kit you linked me to earlier which has a new shaft and 100mm hex? Or does that kit get installed into my existing balance shaft module?