Porsche Enthusiasts Club Forum

Hello,

I am a new member (on day two) and would welcome some advice.

I have a minor squealing noise coming from the front of the car near the two belts. I cant tell which but it sounds like one of the pumps is not very healthy.

I was driving, with the minor squealing, and after about 4 miles the temperature gauge shot into the red and the warning light came on. I stopped and had a hot engine and some water seepage under the car but there was still water in the expansion tank, as it overflowed when I opened it.

I let it cool, filled up the expansion tank and limped home. Again very hot engine and I also noticed that the fan did not immediately come on.

Once it had completely cooled I bled slightly the screw at the base of the radiator and coolant came out. I ran the engine and turned the bleed valve on the top of the block, no water came out at all and only slight whisps of steam came out. This led me to think that water is not getting into the engine block? Made me think the thermostat had failed or the water pump wasn't working, but I am only guessing.

By way of history the car has only done 3000 miles since 1994 but about 600 in the last 6 weeks. It has been kept in a heated garage and MOTed every year.

Would anyone have any suggestions as to what is wrong with the squealing, the overheating and whether the two are linked please.

Thanks,

Matt

Could be a water pump failure. I am no expert so hopefully someone more knowledgeable will advise. I probably wouldn’t start it up until you get a better idea. I think a water pump failure can trash the cam belt.

Alternator belt, renew or adjustment or maybe water pump

Hello and welcome,

I can't give u soultion, but the temp neddle shouldn't really move higher then then 1st White mark, ( running temp ). Bit off a long shot but just check in ur fuse box that the fan relay is there. Sounds like u brought it from a caring owner so I would imagine it is. Just a thought, if it missing or failed it won't turn the fan on, should hear a hum coming from the car for 30-60 secs after you turn it off. ( that's if it's working )

Sounds like the water pump impellor has parted company from the shaft. When was the pump last changed and when were the belts done. If there is water under the engine, it will be dribbling out of the tell tale in the water pump body. I wouldn't be using it until you have had a good look as a seized pump will trash your belts very quickly,
Alasdair

Thanks. I reckon I will renew the water pump as I dont know when that was done. Reading a few other links it also seems to make sense to do the thermostat at the same time. The belts have only been on for 3 months and look fine.

Anyone have any good recommendations as to where to get all I need?.

I am new so dont yet know who is best. I live in Canterbruy Kent but am guessing most can be got from the internet.

Also does this web forum have a list of 'good, bad and ugly' places as experienced by owners. Very useful in the Citroen car club to identify and indeed control some of the rogue elements.

Matt living in Canterbury why not come to our club meet next Friday? Linky here:-http://tipec.net/region_southeastlondon.php
I can help you with specialists send me a PM.

Personally I wouldnt drive it, if the pump seizes you may have a huge bill.

Rich

Don't drive it! The pump is driven by the back of the cambelt so maybe the cam belt needs tensioning. But does sound like pump failure. Garage queens often need a lot of sorting before there fit for daily use. I hope you have some other wheels. Jim (TR7V8) will sort you out.
Welcome to the club!

Hi matt, I live in herne bay. Iv only had mine about 8 months or so I was recomened g m autos, by another 944 owner just a few mins from me. But tht really didn't turn out to well. . Belts are on, just losse blots and a lost beather pipe. Charged £660 labour and parts, belts rollers and pump. £411 +vat parts, waterpump was £201.24+vat

Were abouts did you pick the car up from? Bet the belts were done withing the area of last owener ship. Sounds like the pump could of failed under then tenson of the new belts, these also need retenssion after 1500 miles. Mine didnt iv had a family member who's a ldn mercanic check again 6000 miles later, there still ok. Which is why they recomened a water pump change every 2nd belt change. I got a little oil leak on the front seal, which the gma didn't tell me about, when changing belts. Another place pointed it out. Which I have sense used 4 everything, not over filmler with 944 but there a nice caring bunch. There's a black one in wistable that goes there as well, iv had my head gaskit done there, power streeing pump and a few other bits. That is a privte garge just outside of canturberry. Selling minis. There's a tread on here s2 belts, cheapist place MIT be the same for ur 8v 2.5

would be good to meet up some time when both cars are running, iv done quite a few body updates with mine, new wingmirrors, turbo front, rear 968 spoiler, 18" wheels it's just been resparyed. From red - black

i'm with the water pump as well, don't forget to change the stat if you replace the pump

Matt just to add DO not drive it, get it trailered. Have a word with Aaron at OPC Tonbridge or Type 911 in Beckenham. Turn up to the meet next week in a tin top if you want to come. Also I can pop down sometime next weekend & have a look if you wish. PM me or ping me a mail on tr7v8 at phaetonconsulting dot co dot uk

Hi there,

Apologies for the delay but Easter has been Easter !

I have a friend who is a technician with Saab and very good, but has not worked on a 944.

He has just phoned and been told by a parts supplier that there are some special tools needed to change the water pump and that the tension on the belts is crucial to get right. They also mentioned some locking nuts?

Sorry to be a pain but how easy is it to change the water pump, thermostat and then ensure the belts (that were only changed 600 miles ago) are at the right tension?

Thanks so far it is a good feeling to know there are people out there to turn to!

Matt

Matt, the belt tension is crucial as on any enginew with a timing belt. The auto tensioner on the later cars is only used to get the tension in the ball [ark, you need to use the special tool to adjust the tension. The balance belt also runs very slack with about 1 and a half inches of deflection. You need to remove the starter motor and use a flywheel lock at TDC to stop the engine rotating. Someone may lend you the tools if they are local. I have them but they are in use quite often and I am loath to lend them out to people as a full set is about £150!
Alasdair

Thanks.

I have always had a view that if the tools are needed once then at some point they will come in useful again and are an investment. My problem is being very new to Porsche ownership I dont know which tools to get.

As an aside, how realistic is this video to doing the job? This is for a turbo but I assume it isnt too different for a none turbo?

http://forums.rennlist.com/rennforums/9 ... belts.html

Cant wait til he shows how to put it all back together...

thanks,

Matt