[Vazqueza90]

So my 89 gt lags on turning on once it's on the oil pressure gauge is jumpy n the battery gauge moves as low as 10 when at a stop/idle
The car is a 5.0 with under drive pulleys
Can anyone help
Thnx in advance

 

[primer2tone]

Have you had your alternator tested? It seems like it may be weak.

 

[93slowstang]

So my 89 gt lags on turning on once it's on the oil pressure gauge is jumpy n the battery gauge moves as low as 10 when at a stop/idle
The car is a 5.0 with under drive pulleys
Can anyone help
Thnx in advance

The under drive pulleys are most likely your problem. They are known for causing charging and overheating problems. The factory oil gauges aren't very accurate, you'll need an aftermarket gauge for accuracy.

 

[primer2tone]

The under drive pulleys are most likely your problem. They are known for causing charging and overheating problems. The factory oil gauges aren't very accurate, you'll need an aftermarket gauge for accuracy.

Yeah, you're right. Especially if the under drives are smaller then the stock ones.

 

[Vazqueza90]

The under drive pulleys are most likely your problem. They are known for causing charging and overheating problems. The factory oil gauges aren't very accurate, you'll need an aftermarket gauge for accuracy.

I'm planning on upgrading to a 3G alternator this week
Will that help.?

---------- Post added at 11:44 PM ---------- Previous post was at 11:42 PM ----------

Yeah, you're right. Especially if the under drives are smaller then the stock ones.

Should I change the alt pulley only or change them all back To stock

 

[primer2tone]

I'm planning on upgrading to a 3G alternator this week
Will that help.?

---------- Post added at 11:44 PM ---------- Previous post was at 11:42 PM ----------



Should I change the alt pulley only or change them all back To stock

Are the stock ones bigger?

 

[Vazqueza90]

Are the stock ones bigger?

I'm guessing they r
My dad gave me this car so I'm not sure

 

[Vazqueza90]

Are the stock ones bigger?

I'm not sure my dad gave me this car and he is no longer here

 

[primer2tone]

Have you had this problem all along?

 

[Vazqueza90]

Have you had this problem all along?

Yes
If I change the alternator pulley would it fix the issue.?

 

[93slowstang]

A 3G alternator will definitely help, changing the pulley on just the alternator won't.

 

[Vazqueza90]

A 3G alternator will definitely help, changing the pulley on just the alternator won't.

Thnx
Ill keep u guys updated