14 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHCar wont start after coolant tank leak.
Reported or suspected cause
last time they were changed
Reported cause
No successful repair reported for this finding.
1
Identified cause
0
Suspected cause
0
Reported fixes
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that report identifying a cause
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Reported cause · Original poster
Besides the fact that they are old the car has 140k on it, don't know when it was the last time they were changed.
Leading evidence: 'last time they were changed' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'last time they were changed' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Check crank position sensor (cps) and make sure it is' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that report identifying a cause
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Reported cause
Most shops are now recommending new water pumps by at 60,000 miles, as the aforementioned problem is typically caused by deteriorated water pump vanes.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed · Original poster
I ran a multimeter test on the spark plug wires from this
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
Once you get the old coil packs out, the new ones come with new bolts, and they do not really need to be tightened more than hand tight.
Check crank position sensor (cps) and make sure it is
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
Depending on where the coolant leaked, in this instance I would check the crank position sensor (CPS) and make sure it is clean and dry.
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
I think the crank sensor is your main culprit as I mentioned previous and dB joe also quoted, when your car won't start it's one of three things, sounds stupid but it's simply , Air, fuel,spark that's it , leave a coil pack loose and push a spark plug test lamp in it, if it lights up when you turn her over you know you getting a spark so it must be a fuel problem, if no flashing lights it must be a spark issue, probably related to a sensor, might help to get a read on the ecu, and CEL on dash??
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Reported cause
Most shops are now recommending new water pumps by at 60,000 miles, as the aforementioned problem is typically caused by deteriorated water pump vanes.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
14 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T200546Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
The coolant thank leaked while I was driving and now the car wont start. I took the spark wires out to investigate them and they all look in ok condition no cracks or warping. Besides the fact that they are old the car has 140k on it, don't know when it was the last time they were changed. On the driver side the middle cylinder had a little bit of oil in the tube. The car ran fine before this, no signs of issues. The engine turns kind of fires then stops. The only codes I get are o2 sensors and mass air flow.
Have you ever encounter this before? How did you diagnose the problem?
I ran a multimeter test on the spark plug wires from this
video
. I dont know if porsche spark plug wires are tested the same way, I got no reading out of any of them. How do you test spark plug wires on a porsche? Any ideas on this issue will be greatly appreciated.
^^Correct. Don't know what type of car you are dealing with, but spark plug wires tested with a multimeter should show infinite resistance, i.e., no resistance, or in other words current should pass straight through. If you are getting no reading, change out the spark plug wires for new ones.
At 140K miles, you should just replace all the coil packs with the newer upgraded coil packs. But I still don't understand how you came up with spark plug wires you say your removed from your Porsche for testing???
I was mistaken on the name. I removed the coils.
@Noz1974 I will look at the cam sensors maybe put some dielectric grease in the connectors. I did not get a code for that, what else should I look for?
Im going to change the coils and spark plugs since Im in there, also the bolts that hold the coils in place were stripped by who ever took them out before me. They were actually very tight, I was not expecting that. Anything else I should look for?
Depending on where the coolant leaked, in this instance I would check the crank position sensor (CPS) and make sure it is clean and dry. It is the magneto-electric sensor that is located on the left side (drivers side) of the transmission bellhousing right at the flywheel. It provides a pulse signal that tells the DME/ECU where the crankshaft is, and thus provides the timing for the individual cylinder coil pack spark firing. No signal from the CPS, no spark, thus no engine running.
Once you get the old coil packs out, the new ones come with new bolts, and they do not really need to be tightened more than hand tight. I put them in by hand and then give them just a snug tight.
I think the crank sensor is your main culprit as I mentioned previous and dB joe also quoted, when your car won't start it's one of three things, sounds stupid but it's simply , Air, fuel,spark that's it , leave a coil pack loose and push a spark plug test lamp in it, if it lights up when you turn her over you know you getting a spark so it must be a fuel problem, if no flashing lights it must be a spark issue, probably related to a sensor, might help to get a read on the ecu, and CEL on dash??
Once you get everything else done, pull the negative lead on the battery to reset the DME to baseline values and clear the O2 and MAF fault codes. If it is truly a O2 and/or MAF issue the codes will come back. O2 and MAF errors will not prevent the car from running.
The worst scenario is the water pump was worn out, causing over heating and cracking the head. Coolant leaking into the cylinder prevents starting. To check for this, pull each plug and inspect for coolant. If OK, then something else. How old is the water pump? Most shops are now recommending new water pumps by at 60,000 miles, as the aforementioned problem is typically caused by deteriorated water pump vanes. I hope that isn't what it was. I know this is a problem with early Boxsters.
BTW, once you mess with plug wires, they typically need replacing.
This is a source reference. Confirm exact model applicability in the original material.
