Damned 87 is Bogging down again

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Mar 7, 2019 | 08:55 PM

65mopar

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Damned 87 is Bogging down again

I had a problem with my 87 dying unexpectedly last summer and found a bad coil.
Replaced it and it ran great.......Until now....
It bogs when I take off in 1st then picks up and runs fine after backing off the accelerator.
It does this cold or hot.
It is getting progressively worse.
Could it be that the coil is going bad again?
Also, it's shifting into overdrive way too soon.
Right after shifting to 2nd it goes into overdrive and that really bleeds off torque.
Any suggestions appreciated....

Mar 8, 2019 | 01:57 AM

aklim

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From: Hartford WI

Have you checked fuel pressure especially at WOT? What is it like KOEO and does it hold for a while?

Mar 8, 2019 | 07:10 AM

65Z01

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From: SE NY

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Indeed, check FP and TPS setting/performance.

Mar 8, 2019 | 11:09 AM

65mopar

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I'm going to install a new gauge on my fuel rail and check voltage at the TPS.
The TPS is less than 6 months old but I'll check it any way, plus I'm going to check the OHMS resistance on the coil.

Mar 8, 2019 | 11:24 AM

vader86

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From: Athens AL

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Yes, check FP, see how it reacts to you giving it more throttle opening.

Mar 8, 2019 | 11:49 AM

pacoW

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Joined: Jul 2017

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From: PA

Quote:

Originally Posted by 65mopar

Bogging under a load usually means a lean condition, not enough fuel. Check pressure, check filter, check regulator, maybe pull a plug and see if it looks lean. If all that checks out, pull the injectors and test.