Is my 993 C4S overheating?
#33
Drifting
#35
There is a temp sensor right beside the oil pressure sender, good idea to replace it as well, I'd also do that breather gasket as it's a common leak area
As someone said earlier, only use the Porsche parts, I think the sender was around 80 dollars and the temp sensor was 60ish if I remember correctly from last year
As someone said earlier, only use the Porsche parts, I think the sender was around 80 dollars and the temp sensor was 60ish if I remember correctly from last year
#37
RL Community Team
Rennlist Member
Rennlist Member
Outstanding picture of the engine. Put it in my engine picture library for future reference.
Do you have other views that are not easily seen without disassembly or engine out? Could be a "show me your engine details" thread.
Thanks again,
Andy
Do you have other views that are not easily seen without disassembly or engine out? Could be a "show me your engine details" thread.
Thanks again,
Andy
#38
RL Community Team
Rennlist Member
Rennlist Member
I would consider replacing the Varioram actuator on the underside of the intake manifold and maybe its solenoid valve as well if they are the original ones.
If removing the manifold provided improves visibility, it may be a good time to inspect the air pump wires for heat deterioration.
Just some thoughts.
Andy
If removing the manifold provided improves visibility, it may be a good time to inspect the air pump wires for heat deterioration.
Just some thoughts.
Andy
#39
Race Director
I've done it twice with an extra set of hands. I think we did it in about 45 minutes.
Basically unbolt the airbox and maf,
unbolt the blower motor and all accompanying nonsense like hoses, wires, etc.
Unplug all the vac connections, unplug a few electrical connectors
Remove IAC, Remove air duct above fan, remove throttle body elbow.
Remove throttle and cruise control cable
Undo 6 top hose clamps on intake port
lift and wiggle out.
Basically unbolt the airbox and maf,
unbolt the blower motor and all accompanying nonsense like hoses, wires, etc.
Unplug all the vac connections, unplug a few electrical connectors
Remove IAC, Remove air duct above fan, remove throttle body elbow.
Remove throttle and cruise control cable
Undo 6 top hose clamps on intake port
lift and wiggle out.
#40
Rennlist Member
#41
***Found the Likely Culprit- Now Solution****Car was idling fine but looks exactly like this
. Talked to a Porsche mechanic said its probably the sensor like the guy said in the video comment section..... ********New issue, the car before hand had a couple misfires (cyl 3 n 6) on occasion. Now 1,3,5,6 are misfiring and random misfire. Drove good at start up but started to get worse while driving it 150 miles round trip. Currently have it back in the garage. Now on start up the one or two unspecified cylinders consistently misfire on each cycle. Does this sound like a vacuum problem? Spark and/or wires? fuel pump? Still trying to diagnose it. If I cant I will take it to a technician sometime next week
#42
Likely not a fuel issue. I would start with your distributor and go from there. Make sure your belt is intact that drives the secondary. I don't think vacuum would cause misfires either.
#43
Rennlist Member
Join Date: Nov 2010
Location: Central California
Posts: 3,484
Likes: 0
Received 14 Likes
on
13 Posts
***Found the Likely Culprit- Now Solution****Car was idling fine but looks exactly like this https://www.youtube.com/watch?v=HK4c9uJ8Dc8. Talked to a Porsche mechanic said its probably the sensor like the guy said in the video comment section..... ********New issue, the car before hand had a couple misfires (cyl 3 n 6) on occasion. Now 1,3,5,6 are misfiring and random misfire. Drove good at start up but started to get worse while driving it 150 miles round trip. Currently have it back in the garage. Now on start up the one or two unspecified cylinders consistently misfire on each cycle. Does this sound like a vacuum problem? Spark and/or wires? fuel pump? Still trying to diagnose it. If I cant I will take it to a technician sometime next week
#44
***Found the Likely Culprit- Now Solution****Car was idling fine but looks exactly like this https://www.youtube.com/watch?v=HK4c9uJ8Dc8. Talked to a Porsche mechanic said its probably the sensor like the guy said in the video comment section..... ********New issue, the car before hand had a couple misfires (cyl 3 n 6) on occasion. Now 1,3,5,6 are misfiring and random misfire. Drove good at start up but started to get worse while driving it 150 miles round trip. Currently have it back in the garage. Now on start up the one or two unspecified cylinders consistently misfire on each cycle. Does this sound like a vacuum problem? Spark and/or wires? fuel pump? Still trying to diagnose it. If I cant I will take it to a technician sometime next week
Agree with 71-3.0-911 that your issues don't appear to be fuel related.
Your misfires suggest spark, and remember that an intermittent connection will affect that spark.
Check all connections associated with spark. Coils, caps, plug wires, grounding points.
I had an issue with misfires on cylinder 6 that resolved after cleaning all the grounding points. See this post for more details.
Oil level looks a tad low (but it did bounce off the bottom at the start of the video), oil temp is high, oil pressure is low, oil light comes on, and the misfires.
That is an awful lot of bad going on.
Seems to me that you have more than 1 oil issue.
#45
You had advised in the other thread, that your CE was flashing. That's always a bad thing. Get car fixed, before ya drive her any longer. Even if it's just a sensor affecting your oil pressure reading, the misfires could be multiple things. Combined with possibly poor oil pressure :-(