weird hesitation

[gnkid1987]

This is my very first post

I am 16 years old and i just bought a 1987 Grand National it runs great but it has a slight problem. when i first give it the gas it bogs down like it wants to stall for a second then it revs fine. i was told when i bought it that the motor was rebuilt 10,000 miles ago and he put a cam in it. could it be the cam sensor? please help

Thank you

 

[gofstbuick]

Welcome to the board.

It could be, but then again, it could be a TPS, injector problems etc.,,,. You'll need to post your modifications and do you have a scantool to look at data?

 

[gnkid1987]

i have a kenne belle intake, ajustible fuel pressure regulator, pitbull exhaust. i ran the codes myself with a jumper and code 23 and 24 came up. 23 is the speed sensor and 24 is a low maf sensor

 

[gofstbuick]

Are these hard faults (light on all the time) or soft codes (codes set, but lights not on now). If soft codes, clear the codes and see what happens.

 

[gnkid1987]

at first no light is on but after driving for 5 minutes it comes on. i am almost sure that it is the speed sensor because i read about it on gnttype.org.

 

[gnkid1987]

leaving computer class will be back onine 4-5 hours

 

[gofstbuick]

Address the lower number code first. Is your speedometer working? If you have access to a scan tool, you should see what the speed sensor is seeing.

 

[gnkid1987]

yes my speedomter is working fine

no i dont have a scan tool but i was considering about buying one do you have any ideas

 

[gokada]

Purchase a scan tool first. Quite possibly the best investment you'll make. Make sure that the one you purchase can give live readings such as TPS voltage, O2 crosscount/ voltage, etc, along with codes. I'm pretty sure turbo link and scanmaster have those functions.

Welcome to the board......Lots of great guys on board able to help.

Goodluck!

 

[gofstbuick]

Like Gokota says, look at scanmaster or turbolink, also DirectScan. Try doing a search in the Marketplace, maybe you'll stumble on to a good used unit. Scanmaster will not require a laptop, but Turbolink and DirectScan will.

 

[gnkid1987]

yes i actualy was considering buying a scanmaster

 

[gnkid1987]

thanks for all the help