Timing adjustment - JeepForum.com
 
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post #1 of 6 Old 05-02-2013, 08:00 AM Thread Starter
TJMike2011
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Timing adjustment

Hi- I have A 98 TJ with a 2.5l 4cyl. The motor is fresh, with about 4500 miles on it. It runs fine, but seems to lose power when it starts to pull uphill, loses RPM's and bogs down quickly. Is it in the timing?

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post #2 of 6 Old 05-02-2013, 07:02 PM
laybackman
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Quote:
Originally Posted by TJMike2011 View Post
Hi- I have A 98 TJ with a 2.5l 4cyl. The motor is fresh, with about 4500 miles on it. It runs fine, but seems to lose power when it starts to pull uphill, loses RPM's and bogs down quickly. Is it in the timing?

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What happens when you are stopped and the tranny is in park and you give it gas to increase rpm's?

BTW timing is controlled by the ECM and is not adjustable.

Do you know what was good about the good old days? I wasn't good, And I wasn't old!

Senators and Congressman should wear uniforms like NASCAR drivers so we could identify their corporate sponsors....
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post #3 of 6 Old 05-02-2013, 08:22 PM Thread Starter
TJMike2011
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It idles at around 800 RPM's, manual tranny. I know that timing is controlled by ECU, but looking for a work around to advance timing a click or 2.

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post #4 of 6 Old 05-03-2013, 05:43 AM
laybackman
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Quote:
Originally Posted by TJMike2011 View Post
Hi- I have A 98 TJ with a 2.5l 4cyl. The motor is fresh, with about 4500 miles on it. It runs fine, but seems to lose power when it starts to pull uphill, loses RPM's and bogs down quickly. Is it in the timing?

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You are running 33's with 4.11's being pushed by 4 angry squirrels. It will bog down on hills in fifth gear....downshift!

Do you know what was good about the good old days? I wasn't good, And I wasn't old!

Senators and Congressman should wear uniforms like NASCAR drivers so we could identify their corporate sponsors....
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post #5 of 6 Old 05-03-2013, 06:16 AM Thread Starter
TJMike2011
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This is an on going problem, not just since I added new tires. Had lack of power from the beginning, very sluggish below 1500 RPM's, but comes alive above that in any gear until she needs to pull a slight grade.

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post #6 of 6 Old 05-03-2013, 07:18 AM
laybackman
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This is an on going problem, not just since I added new tires. Had lack of power from the beginning, very sluggish below 1500 RPM's, but comes alive above that in any gear until she needs to pull a slight grade.

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The small engine has no low end torque. It needs higher RPM's to perform. That is why your engine dies on any hill because it doesn't have the low end torque like a larger V8 has.

Do you know what was good about the good old days? I wasn't good, And I wasn't old!

Senators and Congressman should wear uniforms like NASCAR drivers so we could identify their corporate sponsors....
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