Loss Of Power

itlrun2 · 11-28-2002, 04:26 AM

Did a major tune up on the 5.0 wires,plugs,cap,rotor,fuel pump,set TPS at .98.When I accelarate all the way to the floor WOT vehicle flats out. Timing set at 12 degrees. Anyone had this problem please let me know I'm going nuts Thanks

PKRWUD · 11-28-2002, 05:03 AM

Sounds like a weak coil or a problem with the fuel supply. What do the plugs look like after this happens? Is there any pinging or detonation? What is your cranking compression in each cylinder?

itlrun2 · 11-28-2002, 09:34 AM

haven't done compression check yet plugs were like a beige/white no oil not even a hint. has the original coil veh has 175,000 miles on it.

itlrun2 · 11-28-2002, 09:35 AM

No pinging with high test but when I use regular it does ping.

itlrun2 · 11-28-2002, 09:38 AM

Also has the original fule injectors I have another set which i'm going to get them power flushed at a injection place..

PKRWUD · 11-28-2002, 11:44 AM

I'm betting it's the coil.

You can measure the resistance with a DMM set to ohms.

With the coil completely disconnected, measure;

1) Across the primary terminals (where the small wires go).
It must be between .3 and 1.0 ohms.

2) Between the negative primary (dark green wire) terminal and the secondary output terminal (where the "coil wire" that goes to the distributor cap goes).
It must be between 8 and 11.5 K-ohms.

If it fails either test AT ALL, the coil must be replaced.

Or, if you have a known good one, just substitute it and test drive it.

Take care,
~Chris

sn95gt19 · 11-28-2002, 12:41 PM

its most likely your mass air meter, could be your coil though. change your coil and if thats not it, ITS YOUR MASS AIR

PKRWUD · 11-28-2002, 12:49 PM

I was presuming there weren't any codes. Have you checked?

itlrun2 · 11-29-2002, 10:31 AM

yes chris there were but I have to do it again I lost the paper I wrote them down on

PKRWUD · 11-29-2002, 04:32 PM

Even if they are not related, you should always try to correct the codes first. I really wish you had mentioned them earlier, although I still think it may be your coil. I'd like to see the KOEO codes.

11-28-2002, 04:26 AM	#1
itlrun2 Registered Member Join Date: Apr 2002 Location: Miami Beach Fla Posts: 14	Loss Of Power Did a major tune up on the 5.0 wires,plugs,cap,rotor,fuel pump,set TPS at .98.When I accelarate all the way to the floor WOT vehicle flats out. Timing set at 12 degrees. Anyone had this problem please let me know I'm going nuts Thanks

11-28-2002, 05:03 AM	#2
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	Sounds like a weak coil or a problem with the fuel supply. What do the plugs look like after this happens? Is there any pinging or detonation? What is your cranking compression in each cylinder? __________________ Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local RED & WHITE!

11-28-2002, 11:44 AM	#6
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	I'm betting it's the coil. You can measure the resistance with a DMM set to ohms. With the coil completely disconnected, measure; 1) Across the primary terminals (where the small wires go). It must be between .3 and 1.0 ohms. 2) Between the negative primary (dark green wire) terminal and the secondary output terminal (where the "coil wire" that goes to the distributor cap goes). It must be between 8 and 11.5 K-ohms. If it fails either test AT ALL, the coil must be replaced. Or, if you have a known good one, just substitute it and test drive it. Take care, ~Chris __________________ Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local RED & WHITE!

11-28-2002, 12:41 PM	#7
sn95gt19 motors done......woohooo Join Date: Mar 2002 Posts: 799	its most likely your mass air meter, could be your coil though. change your coil and if thats not it, ITS YOUR MASS AIR __________________ 95gt lazer red (98 cobra clone) Rice Haters Club Member #116

11-28-2002, 12:49 PM	#8
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	I was presuming there weren't any codes. Have you checked? __________________ Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local RED & WHITE!

11-28-2002, 09:34 AM	#3
itlrun2 Registered Member Join Date: Apr 2002 Location: Miami Beach Fla Posts: 14	haven't done compression check yet plugs were like a beige/white no oil not even a hint. has the original coil veh has 175,000 miles on it.

11-28-2002, 09:35 AM	#4
itlrun2 Registered Member Join Date: Apr 2002 Location: Miami Beach Fla Posts: 14	No pinging with high test but when I use regular it does ping.

11-28-2002, 09:38 AM	#5
itlrun2 Registered Member Join Date: Apr 2002 Location: Miami Beach Fla Posts: 14	Also has the original fule injectors I have another set which i'm going to get them power flushed at a injection place..

11-29-2002, 10:31 AM	#9
itlrun2 Registered Member Join Date: Apr 2002 Location: Miami Beach Fla Posts: 14	yes chris there were but I have to do it again I lost the paper I wrote them down on

11-29-2002, 04:32 PM	#10
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	Even if they are not related, you should always try to correct the codes first. I really wish you had mentioned them earlier, although I still think it may be your coil. I'd like to see the KOEO codes. __________________ Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local RED & WHITE!

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