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Topic: 84 3.8L Low on Power (Read 7636 times) previous topic - next topic

84 3.8L Low on Power

Reply #45 –
haha, oh yeah I forgotten that this nipple sticks out in plain site.

84 3.8L Low on Power

Reply #46 –
Well, I took for a drive and it runs pretty well.  I suppose I will just ignore those fuel-related codes.....

84 3.8L Low on Power

Reply #47 –
Quote from: atengnr;460088
Well, I took for a drive and it runs pretty well.  I suppose I will just ignore those fuel-related codes.....



As it turns out, the car runs much better with new TPS, but still doesnt have good power.  Hesitation is gone.  I will pursue these other checks.

84 3.8L Low on Power

Reply #49 –
Quote from: EricCoolCats;460758
That was a feature built into the 3.8 from the factory. ;)


Lol agreed the motor is gutless on a good day, but I'm pretty sure this thing is not making 120hp.  It's pretty sluggish merging onto the highway.

84 3.8L Low on Power

Reply #51 –
Quote from: EricCoolCats;460764
0-60 in around 10 seconds? Quarter mile in about 17 seconds? Those are the normals for the 3.8 in these cars.


Yes.  I am aware but still am pretty sure something is wrong.  I had and 84 and an 86 back in the early 90s which I drove gen of thousands of miles and don't recall them being so weak.  I've had this car for 3 years but don't drive it much.  Maybe I'll time a 0-60 run but I bet it's longer than 10.

84 3.8L Low on Power

Reply #52 –
Have you checked the timing chain for play if it's stretch too much will throw the valve timing out enough to lose power,compression test? and how old are your o2 sensors may still be working but get slow at responding changed​ mine very pleased with the result but never threw a code.
 

84 3.8L Low on Power

Reply #53 –
Quote from: mr glee;460786
Have you checked the timing chain for play if it's stretch too much will throw the valve timing out enough to lose power,compression test? and how old are your o2 sensors may still be working but get slow at responding changed​ mine very pleased with the result but never threw a code.


O2 sensors are original.  Timing chain is too but I know that both of my 3.8 from back in the day had  over 100k on them and we're very worn out motors but ran stronger than this motor which has 70k miles, has no blow by evident in air cleaner housing?".