HELP 89 2.5L starts, runs for a second or two, then DIES. - Jeep Wrangler Forum

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Old 04-14-2010, 03:56 PM   #1
Join Date: Apr 2010
Location: Mankato, MN
Posts: 3
HELP 89 2.5L starts, runs for a second or two, then DIES.

I just picked up an 89 wrangler 2.5l and it won't stay running.

New: fuel pump, fuel filter, fuel pressure regulator, fuel injector, throttle position sensor, battery, oil change, vacuume lines, good spark, decent compression, tested manifold air pressure sensor OK.

It will start, but WILL NOT stay running.

It WILL stay running on starting fluid.

Any advice would likely bring good fortune!

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Old 04-14-2010, 04:04 PM   #2
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Takes basicaly 4 things for a motor to run, fuel, air, compression, and spark. If you're running off starter fluid, I'd be taking another look at your fuel system.

Just because parts are new, doesn't mean they actually work.

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Old 04-14-2010, 04:16 PM   #3
Join Date: Apr 2010
Location: Mankato, MN
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Good advice, I'll start double checking the new parts too.
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Old 04-15-2010, 06:37 PM   #4
Join Date: Jan 2010
Location: Las Cruces, NM
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Is the MAF connected? It will start but stall if not hooked up right.
(Sold)1994 Jeep Wrangler 2.5L, Bestop top
/w steel half door and slider windows
5 speed, 2.5" lift, 31" tires,rack lights
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Old 04-16-2010, 09:08 PM   #5
Join Date: Apr 2010
Location: Mankato, MN
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It doesn't seem to have one. With this throttle body, as far as I know, the MAP, and throttle position sensor are the only things that monitor airflow.

If this had one, it's not there. If you have any info on this machine having one, that would be fantastic, and probably explain everything.

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