1988 idel in drive
Drifting
Joined: Dec 2000
Posts: 1,833
Likes: 4
From: Calgary, Alberta
Have you cleaned the Throttle Body lately?? Also check the Throttle Positioning Sensor voltage, and Idle Air Control. I'm at work so can not give you the exact details at this time. I'm sure others will have the voltage needed at TPS. If not just do a search for each item.
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
When the TB gets dirty the computer can have a hard time maintaining proper idle RPM. Use TB cleaner only on the TB bore & plates.
My methods of setting the IAC and the TPS are on my site.
My methods of setting the IAC and the TPS are on my site.
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Tb Cleaner Not Carb Cleaner?
TB cleaner is available at AutoZone and AC Delco stores.
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Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Since the miss is regular clip a timing light in turn onto each wire and see if there is missed flashes that coincide with the engine miss on any wire.
This will either isolate a bad wire, plug, dist. or show that all is well with the ingition system.
If the miss cannot be isolated, look to the fuel delivery system. Verify that fuel pressure holds constant after priming the fuel rail and measure the resistance of each injector to see if any differ widely from the others.
This will either isolate a bad wire, plug, dist. or show that all is well with the ingition system.
If the miss cannot be isolated, look to the fuel delivery system. Verify that fuel pressure holds constant after priming the fuel rail and measure the resistance of each injector to see if any differ widely from the others.
Last edited by 65Z01; Nov 30, 2006 at 08:47 AM.
Le Mans Master
Joined: Oct 2003
Posts: 6,130
Likes: 2
From: seattle WA
You may want to take the ignition control module to autozone and have it checked, they start showing the signs of failure most often after the engine temps rise. They'll check it for free, if I remeber right they're 30-40 bucks.
Thread Starter
Intermediate
Joined: Nov 2006
Posts: 30
Likes: 1
From: Davie fl
Will Try It This Weekend
I Have Changed The Fuel Pump, Maf,full Tune Up, Checked The Presure At The Fuel Rail, And Changed The Gaskets At The Tb, And Plenum. Cleaned Tb, And Replaced All The Vac Lines.
The Last Owner Let The Car Go.
I Have Changed The Fuel Pump, Maf,full Tune Up, Checked The Presure At The Fuel Rail, And Changed The Gaskets At The Tb, And Plenum. Cleaned Tb, And Replaced All The Vac Lines.
The Last Owner Let The Car Go.
Thread Starter
Intermediate
Joined: Nov 2006
Posts: 30
Likes: 1
From: Davie fl
Thank you all for your time and help.
Cleaned TB, Checked all injectors with ohm meter and came up with a constant 17.6 ohms. Checkked all injector leads with a noid light all lines came back good. Replaced module in distributor, and checked wires with timming light.
No change at all. The car is still missing in gear at 6 to 700 rpm in gear.
Cleaned TB, Checked all injectors with ohm meter and came up with a constant 17.6 ohms. Checkked all injector leads with a noid light all lines came back good. Replaced module in distributor, and checked wires with timming light.
No change at all. The car is still missing in gear at 6 to 700 rpm in gear.