Engine will not crank after replacing the intake manifold?

BIGWNN

MEMBER
2000 LINCOLN TOWN CAR
4.6L
V8
2WD
AUTOMATIC
275,000 MILES

I changed the intake manifold and now the engine won't crank. The cooling system was drained before installation The car operated perfectly before I changed the intake manifold.

Saturday, March 20th, 2021 AT 4:53 PM

3 Replies

KASEKENNY

MECHANIC
18,907 POSTS

When you say it will not crank that means when you turn the key the engine does not turn over? Many people get this confused and mean that it cranks but it does not start.

So if your engine does nothing when you turn the key then we need to go to the starter and check voltage at both terminals. This could just be a simple relay or a fuse that blew while doing the repair.

Below is a wiring diagram that will show the wires but you should have 12 volts on both when cranking the engine. The red will have 12 volts all the time.

https://www.2carpros.com/articles/starter-not-working-repair

However if the engine is cranking then we have a different issue.

Let start with this and go from there. Thanks

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Sunday, March 21st, 2021 AT 6:15 PM

BIGWNN

MEMBER
2 POSTS

It was the connection at the starter. Since the starter was relatively new and was working fine when we shut it off, I didn't even give it a thought to check it. Apparently there was just enough corrosion on the connection to keep it from working. Thanks

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Tuesday, March 23rd, 2021 AT 4:33 PM

KASEKENNY

MECHANIC
18,907 POSTS

Perfect. That is funny. You are the second person that had this issue in as many nights. I had someone last night with a connection issue at the starter causing issues.

Thanks so much for posting this as it will surely help others that visit this page. Thanks for using 2CarPros.

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Wednesday, March 24th, 2021 AT 6:33 PM