vigman
Motor head!!!!
- Joined
- Feb 13, 2001
- Messages
- 3,471
- Location
- Valencia, CA,USA
- Corvette
- 88 Convert ( SOLD ) /1973 coupe 4 speed/1964 Vert!
1984 HI speed idle
OK helpin a bud on this one.
ALL his vac lines are SHOT... here were the series of problems.
Code's
22 Throttle position sensor
33 MAP sensor
44 Lean Mix
We changed the TPS ( and adjusted to .54 volts)
Changed the MAP.
Disconnected the battery ( while doing this )
It got the same codes. I chased the wiring to the ECM and it was correct...but the ECM was a weird aftermarket one... I saved my old good one from my 84 and now all the codes are gone....... BUT
The car would not idle worth a damn.( It didn't when I got it)
We cleaned the IAC valves and they were COATED with oil blow by. 117K HARD MILES ON THE CAR.
Reconnected the battery, and the car started to run normal then the idle crept up to 1100 and will not go back down.
I looked at the EGR solonoid and the wires were just taped on ( connector shot)
He's replacing that item today.
Question #1
ANybody have a good VAC diagram on this car.
Question 2
The EGR should not be working at Idle correct?
When does it kick in...2K and above, or just off idle.
Mike
OK helpin a bud on this one.
ALL his vac lines are SHOT... here were the series of problems.
Code's
22 Throttle position sensor
33 MAP sensor
44 Lean Mix
We changed the TPS ( and adjusted to .54 volts)
Changed the MAP.
Disconnected the battery ( while doing this )
It got the same codes. I chased the wiring to the ECM and it was correct...but the ECM was a weird aftermarket one... I saved my old good one from my 84 and now all the codes are gone....... BUT
The car would not idle worth a damn.( It didn't when I got it)
We cleaned the IAC valves and they were COATED with oil blow by. 117K HARD MILES ON THE CAR.
Reconnected the battery, and the car started to run normal then the idle crept up to 1100 and will not go back down.
I looked at the EGR solonoid and the wires were just taped on ( connector shot)
He's replacing that item today.
Question #1
ANybody have a good VAC diagram on this car.
Question 2
The EGR should not be working at Idle correct?
When does it kick in...2K and above, or just off idle.
Mike