noom14921992
Newbie
1989 Chevy c1500 with 5.7 and 700r4 transmission.
Previous owner was evil to this truck. so many clipped wires and broken plastic. its just a shame.
*** the work done already ***
the main thing was a blown head gasket. my friend and i got that taken care of.
1.We did a full engine rebuild with all the gaskets and honing and all that.
2. we replaced the timing chain and water pump at the same time.
3. new distributor, wires, spark plugs and coil
4. new IAC
5. New fuel pump
6. new starter
7. new fly wheel
8. new rear main seal
9. replace a bunch of broken electrical connectors
10. new coolant hoses.
this is just part 1 of the truck. i plan to do all the other stuff also. but i want to getting it running well first.
*** where we are at ***
The truck start and runs great. we drove it around the block and it shifts wonderfully ( previous owner installed new ( rebuilt ) transmission ).
My friend even thinks it is way "stronger" than his 5.7 sierra. that does not matter.
basically, my friend said the truck is healthy.
*** the issue ***
The truck has a very slight surge at idle. I do not have a tach but it sounds like its just a few hundred RPM dip every 10 seconds or so. This is just based off of my ear. so take that how you will.
But it start right up, idles fine other than the slight surge and it never dies and you can rev it with no bogging down and you can blip the throttle and it again revs and does not bog down and goes back to there it should.
*** the question ***
With all the parts that have been replaces and the work that has been done, where should i look next?
would a slight idle down be electrical, mechanical, fuel related, spark related, computer/sensor related or what?
I am just trying to get some information from the hive mind.
I am not sure how to add a short video.
Thank you!
Previous owner was evil to this truck. so many clipped wires and broken plastic. its just a shame.
*** the work done already ***
the main thing was a blown head gasket. my friend and i got that taken care of.
1.We did a full engine rebuild with all the gaskets and honing and all that.
2. we replaced the timing chain and water pump at the same time.
3. new distributor, wires, spark plugs and coil
4. new IAC
5. New fuel pump
6. new starter
7. new fly wheel
8. new rear main seal
9. replace a bunch of broken electrical connectors
10. new coolant hoses.
this is just part 1 of the truck. i plan to do all the other stuff also. but i want to getting it running well first.
*** where we are at ***
The truck start and runs great. we drove it around the block and it shifts wonderfully ( previous owner installed new ( rebuilt ) transmission ).
My friend even thinks it is way "stronger" than his 5.7 sierra. that does not matter.
basically, my friend said the truck is healthy.
*** the issue ***
The truck has a very slight surge at idle. I do not have a tach but it sounds like its just a few hundred RPM dip every 10 seconds or so. This is just based off of my ear. so take that how you will.
But it start right up, idles fine other than the slight surge and it never dies and you can rev it with no bogging down and you can blip the throttle and it again revs and does not bog down and goes back to there it should.
*** the question ***
With all the parts that have been replaces and the work that has been done, where should i look next?
would a slight idle down be electrical, mechanical, fuel related, spark related, computer/sensor related or what?
I am just trying to get some information from the hive mind.
I am not sure how to add a short video.
Thank you!