help with 91 miss fire

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Apr 3, 2010 | 10:15 PM

harleypap

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4th Gear

Joined: Apr 2010

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help with 91 miss fire

i just got my 91. after the motor gets warm it starts to miss. It only does it at idle an when not under aload. Have done plugs wires map temp sensor .Thanks

Apr 4, 2010 | 05:16 AM

engle1147

Le Mans Master

Joined: Jul 2007

Posts: 5,043

Likes: 8

From: Tampa Florida

Did the car have the problem before you did the "plugs wires map temp sensor" or did you change that stuff to try to fix the problem?
Check for stored trouble codes yet?

Apr 4, 2010 | 07:46 AM

harleypap

Thread Starter

4th Gear

Joined: Apr 2010

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It did it before the change. The plug wires did help.It runs good till the temp gets to about 160. Then it starts to miss? thanks.

Apr 4, 2010 | 09:16 AM

Jamesnns

Le Mans Master

Joined: Jan 2010

Posts: 8,553

Likes: 3

Quote:

Originally Posted by harleypap

i just got my 91. after the motor gets warm it starts to miss. It only does it at idle an when not under aload. Have done plugs wires map temp sensor .Thanks

I've got a 91 as well and 'had" and idle issue too after it warmed up.

I did find out why, but I'll send you a PM,

Last edited by Jamesnns; Apr 4, 2010 at 09:23 AM.

Apr 4, 2010 | 10:08 AM

Millah

Racer

Joined: Dec 2009

Posts: 298

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From: Reno NV

my 89 did the same thing. it went away when I changed the fuel injectors to bosch 3s. If yours is a manual the flywheel will rattle at idle also.

Apr 4, 2010 | 12:50 PM

harleypap

Thread Starter

4th Gear

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Yes have a 6 speed an the fly wheel rattle. Did your car run good cold when your injectors were bad?

Apr 4, 2010 | 07:54 PM

harleypap

Thread Starter

4th Gear

Joined: Apr 2010

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Well the car is running much better.James hit it right on. Idle air control valve.Thanks for the help guys. great site for help.The valve was full of cabon.