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Car's running rough at idle [Archive] - StangBangerz Forums
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88ssp
05-14-2007, 05:54 PM
Started the car for the first time in a week and upon initial fire, it dies. Finally get it to run and it has a hunting idle and a pig rich smell. Runs fine going down the road once I get it going, though.

Any ideas? TPS? O2 Sensor(s)?.

Car ran fine last week.
Timido
05-14-2007, 06:46 PM
Make sure you have a good vacum signal to the MAP sensor if your 88 still is speed density. A vacum leak can cauase it also.
dedpedal
05-14-2007, 06:56 PM
On the other hand, if ots converted to mass air, the meter sensor might be filthy. Clean it with alcohol and a Q-Tip, gently./
88ssp
05-14-2007, 09:24 PM
Nope, still SD. All vacuum hoses are OK.
Ryan218
05-14-2007, 09:57 PM
what all vacum hoses can casue something like this?
88ssp
05-14-2007, 10:02 PM
any and all that connect to the intake part of the engine.
Ryan218
05-14-2007, 10:59 PM
any and all that connect to the intake part of the engine.

wonderful
Timido
05-14-2007, 11:34 PM
Check the vacum line to the fuel pressure regulator. Make sure there is no fuel going into the Vacum side. I have seen the regulators rupture and leak into the vacum side. I have seen fires start from those also. So be carfull if you try to take the vacum line off the regulator with the eng running or hot.
88ssp
05-15-2007, 12:28 AM
pulled the vac line off of the regulator and didn't feel any fuel. Didn't have the car running, though.

I guess I'm gonna have to pull some codes. Maybe I'll run it to the zone as I don't have an AVOM, just a digital one.