1995 Pontiac Firebird Dies after 45min

KEVIN12881

MEMBER
1995 PONTIAC FIREBIRD
V8
2WD
AUTOMATIC
130,000 MILES

My 95 Formula 1Trans Am runs great for 45min. Will smoke most cars, accelerates perfect. The car runs just like any trans am with an LT1 and mass air intake should, then dies after 45 min. When you let it sit for 5 min then start it back up you have to go strait home, acts like it is getting no fuel, runs great, then no fuel again.
Could it be the fuel pump getting hot and acting up, bad spark plug wire that acts up when hot?

5 Replies

KHLOW2008

MECHANIC
41,815 POSTS

Hi kevin12881,

Thank you for the donation.

I would rather think it is some thing electrical related than the fuel pump.
Plug wires would not act this way but a faulty ignition coil can.

Check
1. Fuel pump relay.
2. Fuel pump wiring sockets and connections.
3. Ignition switch and fuse connrections.

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Sunday, September 7th, 2008 AT 7:27 AM

KEVIN12881

MEMBER
336 POSTS

I have bought a new fuel pump relay, I thought it was located under the dash and above the foot rest. I cannot find it. I have been driving the car like this back and forth to work for a long time now, but will need it for a long trip in 2 weeks. Can you tell me where the relay is and how to get to it so I can drive for more than 45min, please do not tell me it is behind that metal plate I saw under the dash.

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Sunday, November 23rd, 2008 AT 8:21 AM

JAMES W.

MECHANIC
2,395 POSTS

According to the wiring diagram, the FP relay is on the terminal block under the hood. The information is somewhat confusing. I hope this helps.

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Sunday, November 23rd, 2008 AT 2:56 PM

KHLOW2008

MECHANIC
41,815 POSTS

Hi kevin12881,

Managed to get a diagram of the location but it is almost like none, very vague.
Forward of left kick panel, on footrest bracket, under carpet, item # 3.

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Monday, November 24th, 2008 AT 6:51 AM

KEVIN12881

MEMBER
336 POSTS

Found it, it is uder foot rest and a pain to get to. Changed out the part and it seems to be working, drove for 40min today and will try to drive for an hour in a day or two. Thank you all very much.