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About To Swap New/Used 3.4 Motor - Two Questions - Throttle & AC

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YOUR RESEARCHAbout To Swap New/Used 3.4 Motor - Two Questions - Throttle & AC

Leading reported evidence

Replace wiring at the throttle body

Suggestion or failed attempt

No successful repair reported for this finding.

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Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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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 · Original poster
Or can I just change the wiring at the throttle body on the new motor?
Original post Read captured discussion
About To Swap New/Used 3.4 Motor - Two Questions - Throttle & AC

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Leading evidence: 'Replace wiring at the throttle body' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace wiring at the 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.

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1 matching discussions · 5 captured posts examined · 0 partial discussions

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Use ac compressor

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
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Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Suggestion
Use the AC compressor from your car, you may have to swap some fuel lines, I forget exactly how they run.
Original post Read captured discussion
About To Swap New/Used 3.4 Motor - Two Questions - Throttle & AC

Use harness

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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 · Original poster
Do I need to use my old harness?
Original post Read captured discussion
About To Swap New/Used 3.4 Motor - Two Questions - Throttle & AC

Use of your wiring and accessories

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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
Easy answer is to use all of your wiring and accessories.
Original post Read captured discussion
About To Swap New/Used 3.4 Motor - Two Questions - Throttle & AC

Use system

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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 · Original poster
Or do I need to use the system from the donor car.
Original post Read captured discussion
About To Swap New/Used 3.4 Motor - Two Questions - Throttle & AC

Frequently discussed actions (8)

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Replace wiring at the throttle body

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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 · Original poster
Or can I just change the wiring at the throttle body on the new motor?
Original post Read captured discussion
About To Swap New/Used 3.4 Motor - Two Questions - Throttle & AC

Use ac compressor

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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
Use the AC compressor from your car, you may have to swap some fuel lines, I forget exactly how they run.
Original post Read captured discussion
About To Swap New/Used 3.4 Motor - Two Questions - Throttle & AC

Use harness

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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 · Original poster
Do I need to use my old harness?
Original post Read captured discussion
About To Swap New/Used 3.4 Motor - Two Questions - Throttle & AC

Use of your wiring and accessories

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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
Easy answer is to use all of your wiring and accessories.
Original post Read captured discussion
About To Swap New/Used 3.4 Motor - Two Questions - Throttle & AC

Use system

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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 · Original poster
Or do I need to use the system from the donor car.
Original post Read captured discussion
About To Swap New/Used 3.4 Motor - Two Questions - Throttle & AC

Use throtte cable

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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 · Original poster
What is the procedure I need to do to swap the new motor to use the throtte cable?
Original post Read captured discussion
About To Swap New/Used 3.4 Motor - Two Questions - Throttle & AC

Use throttle body

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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
For the egas vs wire, just use your old throttle body.
Original post Read captured discussion
About To Swap New/Used 3.4 Motor - Two Questions - Throttle & AC

Use throttle body, what do i need

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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 · Original poster
Obviously, I need to use my old throttle body, what do I need to do for the wiring?
Original post Read captured discussion
About To Swap New/Used 3.4 Motor - Two Questions - Throttle & AC

Coverage and how to read this overview

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.

5 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: 20261027T005001Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi All, Some of you may have seen my posts detailing how I money shifted my car on the track, and now I am installing a new motor out of a donor car. I now have both motors out and have two questions about compatibility. 1. My car is a 99 C2 with a throttle cable, the donor is a 2000 C4 with the EGAS/Drive By Wire. What is the procedure I need to do to swap the new motor to use the throtte cable? Obviously, I need to use my old throttle body, what do I need to do for the wiring? Do I need to use my old harness? Or can I just change the wiring at the throttle body on the new motor? 2. The donor car has the fuel cooler attached to the AC Compressor. My car does not have this. What do I need to do to bypass the fuel cooling system? Or do I need to use the system from the donor car. I would prefer not to do this, since I don't want to have to evacuate the R134, and I know that my AC Compressor is new. Any help would be great.

POST 2Original post

Easy answer is to use all of your wiring and accessories. Doing that you basically eliminate any issues as they were for your car from the get go.

POST 3 / ORIGINAL POSTEROriginal post

Bump. Anyone have some advice for me on the fuel cooler?

POST 4Original post

Wayne(Pelican) did a 3.4 swap in a Boxster.He wrote up in some detail.There may be a few gems there for you ?

POST 5Original post

Use the AC compressor from your car, you may have to swap some fuel lines, I forget exactly how they run. For the egas vs wire, just use your old throttle body.

This is a source reference. Confirm exact model applicability in the original material.