Torqueshop1
Junior Member
- Joined
- Oct 14, 2017
- Posts
- 20
- Reaction score
- 1
- Location
- Iowa
- First Name
- Dillon
- Truck Year
- 1987
- Truck Model
- R10
- Engine Size
- 5.7
Okay this is gonna be a long one with lots of details. I've been cruisin forums and trying different things and I'm now out of ideas so I finnally caved and am asking for some help. Here goes.
so I picked up this 1987 chevy r10. Test drove it ran pretty good shifted kinda late but was told it may have a shift kit. Idk How true that is. I drove it 60 miles home no problems. Got home let it sit 20 mins went back out wouldn't start. Turned over fine but no fire. Eventually the battery started getting low so I jumped it and it started up. Over the course of the next week I had been daily driving it and figured out that the truck started great when cold but if u let it sit for 20 mins or so and try to start it it would be very hard to start turns over for a while starts for a second then dies but eventually it would start. So I replaced coolant temp sensor that didn't work, replaced the manifold temp sensor that didn't work, replaced plugs, wires, cap, rotor. Nothing checked the timing with the advance wire unplugged it was set about 6-8 degrees advanced so I set it back to 0. Disconnected battery for about 30 seconds. Still no change. I'm at the bottom of my checklist and not sure what to check next. I was thinking fuel but when I go to start it warm I cycled the key 4 or 5 times to prime the pump no change, hold the pedal to the floor no change.
When the truck is running it runs awesome it'll sit and idle great run 80 mph down the interstate no problem. What should I check next
Now the transmission (700r4). Like I said above it shifts late and hard. When I first got it it didn't do it all the time sometimes it would shift great other times I wouldn't shift to 2nd til about 20 mph. Then I lowered the truck and it didn't start shifting til about 30 mph. So obviously I checked the fluid level and it was overfilled. I pulled probably 1/2 a quart out of it until it registered on the high side of the ok level on the dip stick. After I did this it shifted great I immediately put about 100 miles on it and it shifted perfect the whole time. Until I got home I pulled into town and took off from a stop sign and sure enough it started shifting late and hard again. So I double checked fluid it was still good on the dipstick, color was good, and smell was good. Now it shifts like this all the time. I figured tv cable i went to adjust it obviously it needs more slack to make it shift sooner. upon inspecting my cable it's either non adjustable or it has all the slack already taken out of it either way i can't give the cable any more slack. The trans doesn't slip at all its pulling the whole time the rpms are going up and theres no lack of power.
I'm hoping these problems are connected. Its probably some stupid simple sensor somewhere. Anyone out there have any ideas?
so I picked up this 1987 chevy r10. Test drove it ran pretty good shifted kinda late but was told it may have a shift kit. Idk How true that is. I drove it 60 miles home no problems. Got home let it sit 20 mins went back out wouldn't start. Turned over fine but no fire. Eventually the battery started getting low so I jumped it and it started up. Over the course of the next week I had been daily driving it and figured out that the truck started great when cold but if u let it sit for 20 mins or so and try to start it it would be very hard to start turns over for a while starts for a second then dies but eventually it would start. So I replaced coolant temp sensor that didn't work, replaced the manifold temp sensor that didn't work, replaced plugs, wires, cap, rotor. Nothing checked the timing with the advance wire unplugged it was set about 6-8 degrees advanced so I set it back to 0. Disconnected battery for about 30 seconds. Still no change. I'm at the bottom of my checklist and not sure what to check next. I was thinking fuel but when I go to start it warm I cycled the key 4 or 5 times to prime the pump no change, hold the pedal to the floor no change.
When the truck is running it runs awesome it'll sit and idle great run 80 mph down the interstate no problem. What should I check next
Now the transmission (700r4). Like I said above it shifts late and hard. When I first got it it didn't do it all the time sometimes it would shift great other times I wouldn't shift to 2nd til about 20 mph. Then I lowered the truck and it didn't start shifting til about 30 mph. So obviously I checked the fluid level and it was overfilled. I pulled probably 1/2 a quart out of it until it registered on the high side of the ok level on the dip stick. After I did this it shifted great I immediately put about 100 miles on it and it shifted perfect the whole time. Until I got home I pulled into town and took off from a stop sign and sure enough it started shifting late and hard again. So I double checked fluid it was still good on the dipstick, color was good, and smell was good. Now it shifts like this all the time. I figured tv cable i went to adjust it obviously it needs more slack to make it shift sooner. upon inspecting my cable it's either non adjustable or it has all the slack already taken out of it either way i can't give the cable any more slack. The trans doesn't slip at all its pulling the whole time the rpms are going up and theres no lack of power.
I'm hoping these problems are connected. Its probably some stupid simple sensor somewhere. Anyone out there have any ideas?
