2000 volvo c70 crank, wont start after ptc valve cleaning

MusicBuy · Post by **MusicBuy** » 24 Jan 2016, 16:40

So, i replaced the pvc system on my 2000 volvo c70 convertible to end the oil leakes and pressure created in the engine. After a whole day of working on the car, i started it the following morning only to realize that pressure was still building up in the engine. I did the glove test and noticed smoke out of the dipstick tube, where as before i did not, it only Didnt pass the glove test. After driving for about 15 miles i did the glove test again but it did not pass. So i decided the following day to clean the PTC Valve. After putting things back together, i tried to start the car but it did not start. I cranked about three times untill i reslized that i forgot to connect the electrical connector that connects to the ptc valve. So i went and connected the ptc valve to its electrical wire connector and went back in to start the car but no success. After a day of research i tried the lawnmower syndrome fix and had no success. I went to the junkyard and coped another ptc valve and tried lawnmower syndrome again but no success. Could it be that the computer codes messed up somehow since i tried to start the car without the electrical connector on the ptc valve? Or do i maybe need to try lawnmower syndrome fix with new spark plugs and last more than 40 seconds cranking. I did not last more than 4p0 seconds cranking because i was afraid of messing up starter or something.

Post by **abscate** » 26 Jan 2016, 05:13

You have left off a vacuum hose or broken a hose during your PCV job. It's really easy to do.
The PTC electrical is just a heater, it won't cause a no start. If it isn't seated in the intake manifold, your car won't start.

The only way to find. One of these bad boys is a careful removal, inspection and feeling of all the vacuum System from end to end. You have to go slow and systematic and take at least an hour to do this.

How many miles are on the engine? If it's over 100k, run a compression check for blowby.j

It's not unusual to get a hard start after this job. New plugs and a shot if starter fluid in each cylinder will help.

Crack for 15 seconds, rest for 30 seconds

MusicBuy · Post by **MusicBuy** » 29 Jan 2016, 13:46

abscate wrote:You have left off a vacuum hose or broken a hose during your PCV job. It's really easy to do.
The PTC electrical is just a heater, it won't cause a no start. If it isn't seated in the intake manifold, your car won't start.

The only way to find. One of these bad boys is a careful removal, inspection and feeling of all the vacuum System from end to end. You have to go slow and systematic and take at least an hour to do this.

How many miles are on the engine? If it's over 100k, run a compression check for blowby.j

It's not unusual to get a hard start after this job. New plugs and a shot if starter fluid in each cylinder will help.

Crack for 15 seconds, rest for 30 seconds

Hi, thanks for your reply, i inspected every vacum hose and they seem to be old and a little cracky but not ripped. The car has 160 miles and was running fine and smooth until i decided to clean the ptc valve and not connect the elctrical connector before trying to crank. Then it didnt start. The only thing that riped was the bottom rubber of the ptc valve that was hard to insert back into the intake tube. I replaced it with another one that is a little soggy and softer but was the only one that i did not find ripped at the junkyard.
But, what you are saying is that even tho the ptc valve was not connected to the electrical wire, and as long as it was placed correctly and everything else was inplace, the car should have started?

Post by **abscate** » 29 Jan 2016, 19:19

Correct. The PTC isn't even a valve, it's just a hole. The electrical connection is for a small electrical heater that keeps oil from condensing

Post by **Matty Moo** » 29 Jan 2016, 21:31

Did you plug your MAF back in?

MusicBuy · Post by **MusicBuy** » 30 Jan 2016, 15:07

Matty Moo wrote:Did you plug your MAF back in?

Yes. I did not mess with the maf, just the ptc. All this sounds very interesting.

Post by **rspi** » 31 Jan 2016, 01:47

You need to do some NO START troubleshooting.

Post by **precopster** » 31 Jan 2016, 05:22

Fully charge the battery because if it IS lawnmower syndrome and the battery is healthy it will crank extremely fast with a fully charged battery.

The PTC element is of no consequence; something else is at play here.

MusicBuy · Post by **MusicBuy** » 05 Feb 2016, 15:51

precopster wrote:Fully charge the battery because if it IS lawnmower syndrome and the battery is healthy it will crank extremely fast with a fully charged battery.

The PTC element is of no consequence; something else is at play here.

Ok i will try that. The last time i did the lawnmower fix, i think the batterie was a litlle low.

MusicBuy · Post by **MusicBuy** » 05 Feb 2016, 15:58

abscate wrote:Correct. The PTC isn't even a valve, it's just a hole. The electrical connection is for a small electrical heater that keeps oil from condensing

So i checked the vaccume hoses again with a lot more time and i found that one of the thin vacume hoses, i think the one that goes down to the turbo, was chipped off, quite a little chunk of it. I was surprised to find this since i did not see it last time but i inspected it well with a flash light and it does not seem to be punctured. Just chiped. Will it still cause the car to not turn on? It does seem like it can be punctured easily where it already chiped off.