Cruising hesitation!? Neeed help!

[dylansword]

I'm having a problem with a hesitation, or some sort of miss when I am crising at about 40 or 65. Pretty much if I am cruising at about 2500 rpm. In addition to this I am only getting 15 mpg on the highway, it is running rich. I have a maft pro installed, exhaust, fmic, walbro 255. I adjusted the tps and it got a little better, but still does it. Any help would be great, I am on my way to California. And would love to get better mpg, and no joulty ride.

 

[dylansword]

Bump

 

[AJ'S 88NA]

Done any logging with the Maft-Pro?

 

[dylansword]

No I have not, I am on the road at the moment.

 

[AJ'S 88NA]

Well pay attention to what your doing

 

[dylansword]

Not literally on the road, just not home. I'm on vacation.

 

[Numba1Stuna]

Have you checked timing and adjusting the CPS? Here's an awesome video for it.

https://www.youtube.com/watch?v=Y-smo0jp5bk&feature=youtube_gdata_player

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[jetjock]

Three months ago...

 

[Numba1Stuna]

Didn't see a resolution, did you? Just smart ass response to his question, much like yours...

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[jetjock]

Sorry, my mistake. Who would've thought a constant 2500 rpm miss could likely be timing related...

 

[Numba1Stuna]

Do you know him personally? Do you have a vested interest in helping him? Have you offered any help on the situation besides snide remarks? No? I do. He is asking for any idea not already mentioned in the forum. I guess your maturity precedes you. Please, if you have another idea of what it could be, enlighten us, otherwise keep it to yourself.

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[Dan_Gyoba]

Had a similar symptom with my ex-boss' wife's '89T. The problem was that the TPS was getting an intermittant short from IDL to E2, so the TCCS thought that the throttle was at idle, and would cut the fuel for an instant.

Verified it by disconnecting the TPS for a day, and cruising around in a manner that would consistently cause the problem.

Replaced TPS, problem gone. (And me kicking myself, since she was considering selling me the car for relatively cheap, then after this was fixed, she decided that she wanted to keep the car after all.)