eightynine4x4
Active Member
- Joined
- Oct 15, 2020
- Messages
- 673
- Reaction score
- 178
- Points
- 43
- Location
- New York
- Vehicle Year
- 1989
- Make / Model
- Ford Ranger
- Engine Type
- 2.9 V6
- Transmission
- Automatic
- 2WD / 4WD
- 4WD
- Total Lift
- 2.5" Suspension
- Tire Size
- 31 x 10.5 x 15
Hey all,
Very first post here.
Just picked up an 89 Ranger, V6 2.9 4x4 regular cab.
I suppose this thread could grow a bit since I'm bound to run into lots and lots of questions..
I think the first things i'd like to address are routine sensors replacement, vacuum line cleanliness, fuel filters, and last but not least, addressing anything weird done by previous owners like missing connections here and there.
The Ranger has around 80K on it (and with over all condition of truck it doesn't appear to have rolled over the odometer) so it's a good time to replace some sensors anyways.
First i left the vehicle untouched and pulled some codes. During KOER it get 21,41,72,73,74. However, i'm not positive that i had the engine warm enough for those to be certain. I let it idle for a few minutes. The idle was sometimes/momentarily choppy and erratic, though not ever dangerous sounding.
After that, the following day, I put in a new MAP sensor and it seems to have stabilized quite a bit. Idle still started a tad high at around 1400 RPM, but quickly it settled into about 1000 RPM and the more i let it run the more it smoothed out and deviated a lot less than before. When idling before replacing MAP sensor, even after running for a few minutes it would suddenly jump and plateau to different RPM's pretty significantly. After this, I then simply added a bunch of Ethanol-free fuel. There was around 1/8th tank of fuel in the tank, and i filled it up to about 3/4 using Ethanol free i had in my containers already. Things improved even more, and idle has been sitting pretty at 1000 RPM seemingly for good. Honestly it could have been just the fuel delivery being a little week and 1/8th tank wasn't enough to keep things constant since the truck is parked at a slight uphill incline, and just adding any fuel type would have made things better. But i like the idea of using Ethanol-free fuel in pretty much all old vehicles. My1969 motorcycle behaves better with it.
When looking for the MAP originally (which i finally figured out was inside the firewall), I noticed something else snipped.. Close to the part of firewall where my MAP sensor is buried in, there's a free standing bracket with a yellow-iso plastic piece. It's got 3 short wires dangling down. What is this?? It's a bit dim so hard to see, but those wires are just free in the wind.
I haven't received the Hayne book in the mail yet, but when i do i'm sure it will point me to what this is..
Very first post here.
Just picked up an 89 Ranger, V6 2.9 4x4 regular cab.
I suppose this thread could grow a bit since I'm bound to run into lots and lots of questions..
I think the first things i'd like to address are routine sensors replacement, vacuum line cleanliness, fuel filters, and last but not least, addressing anything weird done by previous owners like missing connections here and there.
The Ranger has around 80K on it (and with over all condition of truck it doesn't appear to have rolled over the odometer) so it's a good time to replace some sensors anyways.
First i left the vehicle untouched and pulled some codes. During KOER it get 21,41,72,73,74. However, i'm not positive that i had the engine warm enough for those to be certain. I let it idle for a few minutes. The idle was sometimes/momentarily choppy and erratic, though not ever dangerous sounding.
After that, the following day, I put in a new MAP sensor and it seems to have stabilized quite a bit. Idle still started a tad high at around 1400 RPM, but quickly it settled into about 1000 RPM and the more i let it run the more it smoothed out and deviated a lot less than before. When idling before replacing MAP sensor, even after running for a few minutes it would suddenly jump and plateau to different RPM's pretty significantly. After this, I then simply added a bunch of Ethanol-free fuel. There was around 1/8th tank of fuel in the tank, and i filled it up to about 3/4 using Ethanol free i had in my containers already. Things improved even more, and idle has been sitting pretty at 1000 RPM seemingly for good. Honestly it could have been just the fuel delivery being a little week and 1/8th tank wasn't enough to keep things constant since the truck is parked at a slight uphill incline, and just adding any fuel type would have made things better. But i like the idea of using Ethanol-free fuel in pretty much all old vehicles. My1969 motorcycle behaves better with it.
When looking for the MAP originally (which i finally figured out was inside the firewall), I noticed something else snipped.. Close to the part of firewall where my MAP sensor is buried in, there's a free standing bracket with a yellow-iso plastic piece. It's got 3 short wires dangling down. What is this?? It's a bit dim so hard to see, but those wires are just free in the wind.
I haven't received the Hayne book in the mail yet, but when i do i'm sure it will point me to what this is..