Priorty of Rubber Bit Replacement
02-09-2004, 02:50 PM
#1
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Priorty of Rubber Bit Replacement
Now that I have the timing belt, water pump, accessory belts, and tuneup behind me, I'm looking for other rubber bits to replace on my low-mileage 1989 928GT. Everything is working fine, but I'd rather be depending on new rubber than old to get me through the next 36,000 miles.
What would you do first?
Plug wires?
Brake lines?
Vacuum hoses?
Fuel lines?
Rebuild calipers?
Refrigerant lines?
Coolant lines?
Something else entirely?
Thanks,
Mark.
What would you do first?
Plug wires?
Brake lines?
Vacuum hoses?
Fuel lines?
Rebuild calipers?
Refrigerant lines?
Coolant lines?
Something else entirely?
Thanks,
Mark.
02-09-2004, 04:33 PM
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Mark -
In all honesty I wouldn't do too much more with it until you see a real need.
My GT has around 26K miles and I have checked just about everything on your list.......and found nothing that was even close to going bad. I have found that miles rather then age plays a much bigger role in how most things wear on a 928. I have seen '90 GTs with 100k miles that need everything on your list replaced.
I would use common sense and go over the car with a fine tooth comb, but if it doesn't look bad, or look like it will go bad in the near future......I would leave it alone. I have seen many owners go "overboard" when doing the preventive maintenance gig to the point were they actually caused themself grief and tons of money on items that were perfectly fine to begin
with.
Plug wires? Ohm test them maybe, check for cracks in outter casing.
Brake lines? Check throughly, if no bulging or cracks, you might just want to leave them alone, same with the calipers......do you suspect something dragging or a strange pull that won't go away?......If so, both are worth a look. Has brake fluid been replaced regularly??
Vacuum lines? Do a good inspection, but I wouldn't take the intake off until I needed to (fairly big job) and then you should replace everything when it IS off.
Fuel lines? Same as brake lines.......inspect and replace only if necessary.
Coolant lines? You might have wanted to replace some when doing the TB/WP change......other then that, check the heater valve and connecting hoses.....these can often cause a problem at some point in the cars life.
Refrigerant lines? Inspect, replace if any may be leaking......one is a real bitch to get at. I'd look at all the O-rings in the system first......that's where most leaks will be.
I'm pretty **** when it comes to the GT......but I do realize that these are pretty tough well engineered cars with good stout parts/hoses installed.
If something looks like it could be marginal, I replace it, if it doesn't it stays.
In all honesty I wouldn't do too much more with it until you see a real need.
My GT has around 26K miles and I have checked just about everything on your list.......and found nothing that was even close to going bad. I have found that miles rather then age plays a much bigger role in how most things wear on a 928. I have seen '90 GTs with 100k miles that need everything on your list replaced.
I would use common sense and go over the car with a fine tooth comb, but if it doesn't look bad, or look like it will go bad in the near future......I would leave it alone. I have seen many owners go "overboard" when doing the preventive maintenance gig to the point were they actually caused themself grief and tons of money on items that were perfectly fine to begin
with.
Plug wires? Ohm test them maybe, check for cracks in outter casing.
Brake lines? Check throughly, if no bulging or cracks, you might just want to leave them alone, same with the calipers......do you suspect something dragging or a strange pull that won't go away?......If so, both are worth a look. Has brake fluid been replaced regularly??
Vacuum lines? Do a good inspection, but I wouldn't take the intake off until I needed to (fairly big job) and then you should replace everything when it IS off.
Fuel lines? Same as brake lines.......inspect and replace only if necessary.
Coolant lines? You might have wanted to replace some when doing the TB/WP change......other then that, check the heater valve and connecting hoses.....these can often cause a problem at some point in the cars life.
Refrigerant lines? Inspect, replace if any may be leaking......one is a real bitch to get at. I'd look at all the O-rings in the system first......that's where most leaks will be.
I'm pretty **** when it comes to the GT......but I do realize that these are pretty tough well engineered cars with good stout parts/hoses installed.
If something looks like it could be marginal, I replace it, if it doesn't it stays.
