13 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHOne thing led to another...
Leading reported evidence
Clean throttle body
Performed · outcome unconfirmed
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 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.
Leading evidence: 'Clean throttle body' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Clean throttle body' (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 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
Lots more parts arrive and I re-installed the following;
Repair turned into an entire engine accessory overhaul
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
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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
What began as a hard to start problem and an expected $400 repair turned into an entire engine accessory overhaul for $1340 in parts!
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
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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
The battery is only about a year old so I thought I'd replace the starter motor.
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
Did you notice from noises while running the engine or is that a stupid question?
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.
13 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: 20261026T203514Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
My 99 C2 144K miles has been getting progressively harder and harder to start - the starter just barely turns over. The battery is only about a year old so I thought I'd replace the starter motor.
Then... I read that the battery-starter-alternator cable could also cause this symptom, so I figured that I'd replace it at the same time.
Then... I read it the engine to body grounding cable could also cause this symptom, so I figured that I'd also replace this.
Parts arrive and I dig into the job - remove air box, remove throttle body, remove intake T, remove serpentine belt, remove alternator.
Then... I notice that the throttle body needs cleaning, so off comes the idle control valve and the entire assy gets a good cleaning.
Then... I notice that one of the throttle body T intake boots is split. So I order replacements for both sides.
Then... I notice that the alternator bearings are making noise. Not really bad but definitely not good. So I order a new alternator.
Then.. I notice that the idle pulleys and the tensioner pulley bearings are also making noise. Order all of those.
Then... I notice that the serpentine belt is looking worn. Order it.
Then... I break the hard plastic vacuum line that controls the resonance flapper on the intake. Oops.
Lots more parts arrive and I re-installed the following;
New starter
New battery-starter-alternator cable
New engine to body grounding cable
New vacuum line
New alternator
New idler pulley's
New tensioner pulley
New belt
Cleaned throttle body
New throttle body intake boots
New throttle body
Whew! What began as a hard to start problem and an expected $400 repair turned into an entire engine accessory overhaul for $1340 in parts! Glad that I can DIY this stuff or it would have cost me a small fortune.
Here is a video (just listen to the sound) of the bad vs new alternator bearings;
https://www.youtube.com/watch?v=jgJJpSDK9mg
Here is a pic of the dirty throttle body;
Here is a pic of the split intake boot;
My work area;
What kind of noises were the idle pulleys and the tensioner pulley bearings making? Did you notice from noises while running the engine or is that a stupid question?
The tensioner and pulleys sounded a lot like the alternator. I could hear/feel the bearing noise when the belt was removed but could not hear them (yet) over the normal noise level from the engine (which is why I hadn't thought that they would need replacement).
