Car cuts out. Coilpack? MAF? Ideas?

[1of1547]

When I am cruising down the road the motor will cut out for a second or two. Then it will come back on like nothing happened. It normally happens @ 2500 rpm. But it will do under boost. I got a junkyard coilpack and module and tried it. The problem got worse with that pack. When I ohmed the junkyard coilpack it was reading to high on the middle tower. so that coilpack was no good. I then ohmed my "good " coilpack. It read 17.5, 17.5, and 11.5 the first time. But I rechecked it several more times. Everytime after that it came up with 11.2 to 12.0 after the first time. I guess it wasn't making a good contact the first time. But since it ran so bad with the junkyard pack, I have been thinking it needs a new one. I don't think that it is the MAF because you can tap on it and it is fine. It also pegs at 255 at full throtle. It has new Magnacores and CR43TS plugs. So there sould not be a problem there. Any ideas will are greatly appreciated. Cashflow is tight so I can't just replace parts to I find the problem.

 

[6=8]

How new are the new plugs/wires? Could have a problem there, esp. if this problem started so soon after the new stuff was added. At least pull them out and check for a tight .035 gap. No cost to do that!

I remember adding bosch platinum plugs to mine and within a week, my car started to run really crappy. I took it in to a local GN specailist (Mike Doyal I think... great guy) and the first thing he asked me was how long ago I changed the plugs and what kind did I use. He said "Thats your problem... Those bosch platinum plugs are not robust enough in the TR's"

Well, he asked If I wanted to replace them myself, but not believing that could be the issue, I said I'd rather that he did it (Because then he could begin working on the real problem, or so I thought) When I picked it up at the end of the day, the bill was $38 bucks and the GN ran great!

Sorry for the long story, but I thought it might help. Good luck!

 

[Red Regal T]

CHECK YOUR BATTERY CONNECTION. THE ECM WIRE IS CONNECTED DIRECTLY TO POSITIVE CABLE AND IF THERE IS CORROSION THERE, COULD PLAY HELL WITH YOUR ECM AND CAUSE CUTTING OUT AND OTHER PROBLEMS.

 

[1of1547]

The plug wires and the plugs are brand new. The plugs are gapped at a tight .035. I am not very happy with the Magnacores so I am going to replace them. I doubt that they are the problem though. I cleaned the battery terminals and put dielectric grease on them. But still have the same problem. Thanks for your help.

 

[325DR]

Well, since you are tight on money, here is a free thing you can check.

Start your car, and while it is running, disconnect your cam sensor (goes in the top of the timing cover). Take your car for a ride and see if the problem went away. You cant start your car with the cam sensor disconnected, so be sure to plug it back in when you are done.

 

[alkyboost]

missing

my car cuts out and dies on rare occasions also.
traced it to the tps switch.
all i have to do is jiggle the tps wires and it works fine.
87 turbo t

 

[MeanBuicks]

When my car had those symptoms a few years back, it turned out to be the PROM chip. It acted exactly like your car and eventually croaked all together.

I had my suspicions, replaced the chip on the side of the road and it's been fine ever since.

 

[1of1547]

Greg, who was the manufacturer of your chip. I replaced my Lubrant chip with a Armstrong chip. The cutting out has gone away. It must of been a bad chip. Thanks again guys.