99 xc70 no start

mcq · Post by **mcq** » 09 Nov 2015, 20:35

I am posting the resolution to my no start situation that started a few weeks ago. Starting with a good running car. My daughter overheated it, I think from the expansion reservoir cap leaking. this allowed coolant to spew everywhere (everywhere) in the eng compartment. I got the car home the next day, but could not restart, like the lawn mower syndrome. Checked batt terminals and cables, good. Checked fuel pressure-50psi and held for 30 min,. Could hear relay run pump as well. Cranking did seem sluggish, swapped another battery, no go. I did pull all coils and checked for spark- good. checked compression, low and even at 80-90psi. now too much gas washed oil off rings. Squirted oil in and 150psi on all. No start, flooded. I had coils on off and pinched a wire on one and blew a fuse. Did not realize until way later. I did replace starter and could tell a great improvement in turn over. In all this, I noted that water droplets appeared to bead up on all spark plug boots. (seattle + rain). I dried and let set overnight. They would be wet the next morning, so I replaced boots, replaced plugs, then checked again for spark, none. Found a blown fuse to ign coils, and replaced. Started and runs very well. The perfect bad storm, and very frustrating experience. hope this helps someone else.

Post by **abscate** » 10 Nov 2015, 02:55

It sounds like the progress was

Car got wet, no start because of ignition
Killed battery and or starter
Lawn mower syndrome ( LMS(
Coil wire fault during addressing LMS
MVSolved !

Wow! Well done letting the beast know who is boss!!

01_Nautic_V70 · Post by **01_Nautic_V70** » 10 Nov 2015, 07:09

What are the symptoms and fixes for LMS?

mcq · Post by **mcq** » 10 Nov 2015, 18:57

abscate, those are the basics in a nutshell.

Nautic v70, there is a post on the v70 92-2000 forum (where I should have really posted my resolution above). check out the P80 no start diagnostic procedure there. My issue was a sudden onset, so I rule out rings and valve ssues. But those can contribute if the engine is cranking slowly as I determined. that procedure is really thorough. if you search LMS on this site you will find several scenarios.

Post by **abscate** » 11 Nov 2015, 07:36

Bumped back to the P80 forum....thanks again for the follow up