Your thoughts on possible cause of car trouble ** EDIT: Issues identified
#46
Rennlist Member
With the work you have been doing on the Mercedes, I think you can do 90% of the work on a 928. Certainly all of the belt changes and the transmission servicing as well as a radiator change. If the A/C is acceptable to you then don't do anything with it. If you change any of the hoses then the entire system needs servicing. All you really need are the tools Wally describes and the manuals on CD that he also describes.
I'm not satisfied with any of the comments from you mechanic. Radiators leak or they don't, they don't TRY to leak. He never addressed some of the problems you went to him for. I see your in Florida. Get the name of a reputable 928 mechanic from someone on this list and use that shop or mechanic. What was his answer about the TBF concern?
Bottom line . . . you still haven't found a qualified, GOOD mechanic.
I'm not satisfied with any of the comments from you mechanic. Radiators leak or they don't, they don't TRY to leak. He never addressed some of the problems you went to him for. I see your in Florida. Get the name of a reputable 928 mechanic from someone on this list and use that shop or mechanic. What was his answer about the TBF concern?
Bottom line . . . you still haven't found a qualified, GOOD mechanic.
#48
Captain Obvious
Super User
Super User
Why is the mechanic giving you a laundry list of problems that have nothing to do with the stalling or not running? 90% on that list is irrelevant. I have a feeling he has no idea why the car is not running. Tow it home before he starts charing storage.
#49
Rennlist Member
Welcome and +1 to those who say you can probably do most of the work. Hmmm .... you're a girl, girls like to shop and you'll be shopping for tools. ;-) ;-)
Nonetheless, you might want to start a new thread titled something like "Need a good mechanic in Miami" (or wherever). If there are good ones, you'll hear about them.
That said:
You've already spent the best money you can by joining Rennlist and this community. The second best 928 $$ are for Jim Morehouse's CD set.
http://s287999742.e-shop.info/shop/a...aid%3DPETCD%26
Here's a very old thread about what's on them. The set's been steadily improved since.
https://rennlist.com/forums/928-foru...n-cd-long.html
The top post in this forum is a great place to start on your tutorial before the CD's get to you ...
https://rennlist.com/forums/928-foru...questions.html
These guys are the granddaddies of all the tip sites, all the way back to the ancient days of listservs.
http://www.nichols.nu/tips.htm
http://members.rennlist.com/pirtle/svc.html
These pages include Wally's Annual Electrical Maintenance:
http://members.rennlist.com/jerdmann/electrical.htm
Here are a few sites that are heavy on well-photographed procedures. There are a bunch of others that I hate to diss by not listing them but ...
http://members.rennlist.com/v1uhoh/index.htm
http://members.rennlist.com/sharkski..._Main_Home.htm
http://www.dwaynesgarage.norcal928.org
http://www.kondratyev.com/porsche
http://members.rennlist.com/captearlg/928align.html
The vendors' sites also have a lot of great resources on them. The HVAC link below is just a sample from http://928gt.com/default5.htm.
https://www.928gt.com/t-wallyhvac.aspx
Then there's http://928intl.com/repair.htm
And, for parts diagrams,
http://www.stuttgartclassicparts.com...91_c_3171.html
Then there's the DIY Archive on Rennlist
https://rennlist.com/forums/928-134/?pp=40&daysprune=-1
And the 928 Owner's Club
http://www.928oc.org/tip/tips.htm
Then there's:
http://www.google.com/search?hl=en&s...gs_rfai=&cad=h
Which will bring up a Google search box that reads "site:forums.rennlist.com inurl:928" You can put a space after 928 and type your search term or string and it'll search this forum.
That oughta be enough to give you confidence, keep you busy and make your eyes cross.
Nonetheless, you might want to start a new thread titled something like "Need a good mechanic in Miami" (or wherever). If there are good ones, you'll hear about them.
That said:
You've already spent the best money you can by joining Rennlist and this community. The second best 928 $$ are for Jim Morehouse's CD set.
http://s287999742.e-shop.info/shop/a...aid%3DPETCD%26
Here's a very old thread about what's on them. The set's been steadily improved since.
https://rennlist.com/forums/928-foru...n-cd-long.html
The top post in this forum is a great place to start on your tutorial before the CD's get to you ...
https://rennlist.com/forums/928-foru...questions.html
These guys are the granddaddies of all the tip sites, all the way back to the ancient days of listservs.
http://www.nichols.nu/tips.htm
http://members.rennlist.com/pirtle/svc.html
These pages include Wally's Annual Electrical Maintenance:
http://members.rennlist.com/jerdmann/electrical.htm
Here are a few sites that are heavy on well-photographed procedures. There are a bunch of others that I hate to diss by not listing them but ...
http://members.rennlist.com/v1uhoh/index.htm
http://members.rennlist.com/sharkski..._Main_Home.htm
http://www.dwaynesgarage.norcal928.org
http://www.kondratyev.com/porsche
http://members.rennlist.com/captearlg/928align.html
The vendors' sites also have a lot of great resources on them. The HVAC link below is just a sample from http://928gt.com/default5.htm.
https://www.928gt.com/t-wallyhvac.aspx
Then there's http://928intl.com/repair.htm
And, for parts diagrams,
http://www.stuttgartclassicparts.com...91_c_3171.html
Then there's the DIY Archive on Rennlist
https://rennlist.com/forums/928-134/?pp=40&daysprune=-1
And the 928 Owner's Club
http://www.928oc.org/tip/tips.htm
Then there's:
http://www.google.com/search?hl=en&s...gs_rfai=&cad=h
Which will bring up a Google search box that reads "site:forums.rennlist.com inurl:928" You can put a space after 928 and type your search term or string and it'll search this forum.
That oughta be enough to give you confidence, keep you busy and make your eyes cross.
#50
Addict
Lifetime Rennlist
Member
Lifetime Rennlist
Member
[QUOTE=WallyP;8628141]I am dubious about the mechanic's report.
2) I have not seen an LH shoot extra fuel in and wash the cylinder walls......"
I seem to recall one of the classic L H failures is the rapid clicking of all the injectors not sure if fuel is being injected but seems possible.
2) I have not seen an LH shoot extra fuel in and wash the cylinder walls......"
I seem to recall one of the classic L H failures is the rapid clicking of all the injectors not sure if fuel is being injected but seems possible.
#51
Race Car
Dan
'91 928GT S/C 475hp/460lb.ft
#52
Addict
Lifetime Rennlist
Member
Lifetime Rennlist
Member
#53
Shameful Thread Killer
Rennlist Member
Rennlist Member
Let's separate some things.
1. No start, or run. This was related to the relays that service the LH, fuel pump and EZK. The relays are a weak part after so long. They need to be removed, cleaned and re-installed. This should get the car running again so it will drive.
2. Once that's done, every fuse needs to be removed, cleaned, checked with a meter and re-installed. The power steering hose needs to be replaced. The car needs an alignment, and then there's the ever popular cleaning of all grounds on the chassis. This is all remedial mx, and will prevent some issues, but will not solve problems that exist(except the alignment and the PS hose).
3. Hang around here and ask questions, or use the search to find out how to remove the radiator. Send to one of the shops that can rebuild it with new seals and end tanks.
4. I don't recommend converting the AC to R-134. I recommend fixing any small leaks, then recharging with R-12(avail on ebay to just about anyone, or someone with a AC lic). Have the control head converted to the big relay and reinstall.
5. Release flex plate tension and install PKclamp. Replace trans fluid. Check axle boots while it's up there.
6. Replace all acc belts.
Everything except the radiator rebuild and the AC work can be done by a DIY person with the manuals and some help from rennlist. It's really the only way to be sure, or you can take it to one of the specialists here on rennlist that work only on 928s. Plan now for your TB and WP replacement. If you want to host a party, and have beer and steaks and a pool, you may get some guys to come over and work through that with you.
I want to hear more about the mech reasoning on the dumping fuel, and lowering compression. Did he check the compression with a gauge? Was there fuel in the oil? Did he check the injector controller(LH), and the associated wiring? It sounds like a lot of guessing to me. Also plan to get and keep a good battery. These cars really like good batts in hot weather.
1. No start, or run. This was related to the relays that service the LH, fuel pump and EZK. The relays are a weak part after so long. They need to be removed, cleaned and re-installed. This should get the car running again so it will drive.
2. Once that's done, every fuse needs to be removed, cleaned, checked with a meter and re-installed. The power steering hose needs to be replaced. The car needs an alignment, and then there's the ever popular cleaning of all grounds on the chassis. This is all remedial mx, and will prevent some issues, but will not solve problems that exist(except the alignment and the PS hose).
3. Hang around here and ask questions, or use the search to find out how to remove the radiator. Send to one of the shops that can rebuild it with new seals and end tanks.
4. I don't recommend converting the AC to R-134. I recommend fixing any small leaks, then recharging with R-12(avail on ebay to just about anyone, or someone with a AC lic). Have the control head converted to the big relay and reinstall.
5. Release flex plate tension and install PKclamp. Replace trans fluid. Check axle boots while it's up there.
6. Replace all acc belts.
Everything except the radiator rebuild and the AC work can be done by a DIY person with the manuals and some help from rennlist. It's really the only way to be sure, or you can take it to one of the specialists here on rennlist that work only on 928s. Plan now for your TB and WP replacement. If you want to host a party, and have beer and steaks and a pool, you may get some guys to come over and work through that with you.
I want to hear more about the mech reasoning on the dumping fuel, and lowering compression. Did he check the compression with a gauge? Was there fuel in the oil? Did he check the injector controller(LH), and the associated wiring? It sounds like a lot of guessing to me. Also plan to get and keep a good battery. These cars really like good batts in hot weather.
#54
Cottage Industry Sponsor
Lifetime Rennlist
Member
Lifetime Rennlist
Member
I was happy to hear you found - or believed to have found - a good mechanic. But some of the items don't make sense to me. I'm also concerned about it being there for two months. Most mechanics don't have the space to keep it inside - at least not during the day. That would make your interior suffer from the sun exposure - leather drying, dash cracking, etc.
Here is what strikes me as odd:
1. What is the likelihood of three things (relays, in this case) failing at the same time? Very low. Perhaps there was an electrical problem (e.g. weak ground connection) that that caused them to not function properly.
2. Reverting to R-12? So that he can charge you 10 times as much for recharging the system?
I was told that if there is an AC performance problem on the 928, there is a good chance too much oil in the system. You didn't say you have an AC performance problem, though.
I'd tackle the AC leak when your AC stops working after losing its current charge. Then recharge with R-134a, and it should work as good as mine - which is as good as it was with R-12.
Perhaps one can measure a difference, but I certainly can't feel it.
3. I suspect your radiator is seeping a bit. I would worry about that later. If you want to be prepared for an emergency, carry some water and PAPRIKA spice in the car. If the leak gets bad and you have to get home, the Paprika will make the coolant clump when it is pressed through the leak, and slow down or stop the leak temporarily. I had a crack in the engine block many years ago, and drove months that way, until I found a replacement engine.
I wish someone from this list could call or visit the mechanic on your behalf, and get a clear picture of what's going-on with the engine, and some of the other stuff. Then he could post the results here, and we collectively could give you much more specific advice.
Remember that "Porsche 928" and "woman" lights-up $$$ signs in many mechanics' eyes. You always have to be a step ahead of them, or you are easy prey.
Same with car salesmen.
I love to play "clueless" for a while and see, if they are honest or try to BS me. It's not always fun for them, if they do.
Oh, that reminds me of a funny story:
Many years ago, a friend of mine asked me to come along and look at cars. We found a car he liked, fought with the salesman until the price was acceptable, and went to the financing office. The finance manager was... well, let's say "well proportioned", and wearing a very low cut top. All the money we had "saved" in negotiations with the salesman was lost while my friend stared at her cleavage. So, yes, it kind-of works both ways.
Here is what strikes me as odd:
1. What is the likelihood of three things (relays, in this case) failing at the same time? Very low. Perhaps there was an electrical problem (e.g. weak ground connection) that that caused them to not function properly.
2. Reverting to R-12? So that he can charge you 10 times as much for recharging the system?
I was told that if there is an AC performance problem on the 928, there is a good chance too much oil in the system. You didn't say you have an AC performance problem, though.
I'd tackle the AC leak when your AC stops working after losing its current charge. Then recharge with R-134a, and it should work as good as mine - which is as good as it was with R-12.
Perhaps one can measure a difference, but I certainly can't feel it.
3. I suspect your radiator is seeping a bit. I would worry about that later. If you want to be prepared for an emergency, carry some water and PAPRIKA spice in the car. If the leak gets bad and you have to get home, the Paprika will make the coolant clump when it is pressed through the leak, and slow down or stop the leak temporarily. I had a crack in the engine block many years ago, and drove months that way, until I found a replacement engine.
I wish someone from this list could call or visit the mechanic on your behalf, and get a clear picture of what's going-on with the engine, and some of the other stuff. Then he could post the results here, and we collectively could give you much more specific advice.
Remember that "Porsche 928" and "woman" lights-up $$$ signs in many mechanics' eyes. You always have to be a step ahead of them, or you are easy prey.
Same with car salesmen.
I love to play "clueless" for a while and see, if they are honest or try to BS me. It's not always fun for them, if they do.
Oh, that reminds me of a funny story:
Many years ago, a friend of mine asked me to come along and look at cars. We found a car he liked, fought with the salesman until the price was acceptable, and went to the financing office. The finance manager was... well, let's say "well proportioned", and wearing a very low cut top. All the money we had "saved" in negotiations with the salesman was lost while my friend stared at her cleavage. So, yes, it kind-of works both ways.
#55
Rennlist Member
There were a couple of FL folks at SITM. Maybe one can help somewhere?
+1000 on DIY. Pulling a 928 radiator has got to be one of the easier jobs on the car. Until it starts LEAKING LEAKING, leave it alone. You could even use that time to find a good rebuilt one, then it's in an out.
Based on the reports back from the "mechanics", I think you're striking out on expertise needed to actually FIX some problems. All the info you're getting back is basics of catch up maintenance that almost every one of these cars needs. There's one thing to know how to do a timing belt job - which really isn't that difficult, just time consuming - another thing to know enough to troubleshoot and fix.
+1000 on DIY. Pulling a 928 radiator has got to be one of the easier jobs on the car. Until it starts LEAKING LEAKING, leave it alone. You could even use that time to find a good rebuilt one, then it's in an out.
Based on the reports back from the "mechanics", I think you're striking out on expertise needed to actually FIX some problems. All the info you're getting back is basics of catch up maintenance that almost every one of these cars needs. There's one thing to know how to do a timing belt job - which really isn't that difficult, just time consuming - another thing to know enough to troubleshoot and fix.
#56
Nordschleife Master
#57
Instructor
If there is red dust around the rear coupling, that is rust (wear debris) from the splines due to movement in the coupling.
#58
Under the Lift
Lifetime Rennlist
Member
Lifetime Rennlist
Member
Wow-thanks Sean!
Re the radiator, I mentioned to the mechanic that there was a local guy parting out his car and had one available but he strongly advised against going with a used unit "given the labor involved". Any idea who rebuilds them or where I can source a rebuilt unit?
Re the radiator, I mentioned to the mechanic that there was a local guy parting out his car and had one available but he strongly advised against going with a used unit "given the labor involved". Any idea who rebuilds them or where I can source a rebuilt unit?
Your "mechanic's" laundry list overlooked changing the blinker fluid.
#59
Cottage Industry Sponsor
Lifetime Rennlist
Member
Lifetime Rennlist
Member
Mirlene:
I'd be happy to call your mechanic next week and get a better idea of what's wrong with your car. I was hoping that someone with more knowledge about engine issues would volunteer, but if none of the experts are available, I'll do my best to help figure this out.