drives fine,then slows and goes slower....??

[TONYCASH]

Well,I got another pump from one of my other cars(same yr and numbers on it) also got 2 TPS units off 2 other cars I will try them and see what happens.I will also make sure fuel is coming out below and above fuel filter.Will update tonite or tomorrow.

[Pu241]

You'll need to adjust the TPS as per the manual.
Actually, that may have been all you needed to do to begin with!

[TONYCASH]

Well,I checked fuel pump...fuel comes out well.Hooked it up again and went to fuel filter.Again,plenty of fuel coming out.Took hose off topside of filter,blew through it...fine.Put two additional TPS units on and no difference.One was even off of my 90 LX that I know is good.
Fuel injectors ? EFI system ? I am so lost.!!!
Maybe I should just take the complete intake off my LX and swap it ? I know it works.

PU241..is it in the haynes how to adjust it ?

[pr0nst4r]

It would be worth trying. You may have a bad AFM. Yes, it could be your fuel rail or injectors. Those you can take out and inspect to see if you have any issues.

DON'T FORGET: Check ALL of your vacuum lines.

[TONYCASH]

anyone have any other ideas before I end up swapping over stuff ?

[GenevaDirt]

Stopped at Tony's this weekend...tried to help but was baffled at the problem.....well after we were finally able to start the car....someone..nudge nudge...forgot to reconnect the fuel lines when he previously replaced the fuel pump....




But back to the problem....car was running fine till it warmed up and then as soon as you tried to give it gas the car just bogged immediately and stalled. Can't tell if it is starving for gas or getting to much...was an immediate stall when given throttle.

Any other suggestions for him to try?

[TONYCASH]

Hmmm.I wonder how those came off ?? Oh,,I AM AN IDIOT!!lol.

[FestYboy]

idles fine, but dies durring tip in... sounds like VAF signal loss (kills power to pump).

how does it react exactly?

[TONYCASH]

here is what happens.Sometimes you will be going 65-70 and the car will be normal.Then all of a sudden it slows.you press the gas,but,it doesn't matter.it slows down,but,stays steady at what ever speed it went down to,say 55.then in a few seconds it comes right back up.It is like when you push the gas peddle it wants to go even slower(bogs down). then , at other times,you'll be sitting at a stop sign or light.you go to take off and it stalls.if you baby the throttle it sometimes doesn't do it.And another scenario is when I back out of drive(happened twice) I put it in gear ( automatic) and start to go and it stalls.In the stalling scenarios it won't start back up.Let it sit and it does , mostly,after a bit.Sometimes 5 mins sometimes half hour.

[scout800]

Check those rubber fuel lines good the caravan I spent hours working on had a small piece inside the hose that was deteriated and when the pressure got so high it would suck it shut like a valve then after you shut it off or let it sit the flap would go back down and it would run again look for the hoses to be soft or falling apart or cracked inside

[mturner2003]

Hey Tony, just sent you a text. I'll be in Austintown this weekend. If you'll be around, I'd be glad to give you a hand.

[FestYboy]

here is what happens.Sometimes you will be going 65-70 and the car will be normal.Then all of a sudden it slows.you press the gas,but,it doesn't matter.it slows down,but,stays steady at what ever speed it went down to,say 55.then in a few seconds it comes right back up.It is like when you push the gas peddle it wants to go even slower(bogs down). then , at other times,you'll be sitting at a stop sign or light.you go to take off and it stalls.if you baby the throttle it sometimes doesn't do it.And another scenario is when I back out of drive(happened twice) I put it in gear ( automatic) and start to go and it stalls.In the stalling scenarios it won't start back up.Let it sit and it does , mostly,after a bit.Sometimes 5 mins sometimes half hour.

don't know if you've done this yet or not, but remove your cap/rotor and hose down the inside of the dizzy with brakeclean. take note of what comes out.

[GenevaDirt]

Arty...disty has been swapped several times. Has great spark...has fuel. Now I never know what to call this one...the thingy ma bob over the air filter...lol....has also been swapped all with known working parts.

[FestYboy]

yeah yeah, great spark, till it gets warm... then blehh, ttthhhhuuppp, dead. hose it down anyway, it can't hurt. another item that should be tested/swapped: coil (they can get stupid once warm). but you still need to look at the injector pulse w/ a noid light.

oh, and double check your ECU grounds.

[GenevaDirt]

still plenty of spark once warm...witnessed that myself...and I thought dominos fired the noid.