'88 62 won't stay running

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.

Bill may be right, but when I unplugged my TPS the truck ran much better (although with a high idle), than with it plugged in. This only was to show it needed adjustment or replacing, and of course you can do this by testing it with an Ohmmeter. I think it's worth a shot, just to see; can't hurt.

If you have an FSM, the TPS is shown on page FI-68.

And Bill, that's some garage you've got working there. Don't see too many GTV6's out there! Animale!
 
NYNick said:
And Bill, that's some garage you've got working there. Don't see too many GTV6's out there! Animale!
Click to expand...

Hi Nick,

Don't get the wrong idea--they're all rust buckets, I'm a total bottom feeder when it comes to buying cars. :D OTOH, each of them was headed to the scrap yard when I picked them up, but they all run great now. The GTV6 is loads of fun, and really goes like stink (as they say on Top Gear).

btw - where are you in Westchester? I've lived in Tarrytown and Dobbs Ferry in the past. I loved Dobbs Ferry.

Bill
 
I'm in Northern Westchester now...grew up in New Rochelle. My partner had a GTV6 back in the 80's...wow, what a sleeper, and a rocketship! Wouldn't mind finding one myself to resurrect. I'm a big fan of tuning up the old beat up cars, and running them as is. Where are you located these days?

I've got too many cars as it is. 3 are 'mine' and aren't headed anywhere anytime soon. 88FJ62, 65 GTO, 2009 TT 911. If I had to pick a favorite, I'd be hard pressed.

My name is Nick, and I'm a caraholic.
 
NYNick said:
I'm in Northern Westchester now...grew up in New Rochelle. My partner had a GTV6 back in the 80's...wow, what a sleeper, and a rocketship! Wouldn't mind finding one myself to resurrect. I'm a big fan of tuning up the old beat up cars, and running them as is. Where are you located these days?

I've got too many cars as it is. 3 are 'mine' and aren't headed anywhere anytime soon. 88FJ62, 65 GTO, 2009 TT 911. If I had to pick a favorite, I'd be hard pressed.

My name is Nick, and I'm a caraholic.
Click to expand...

We're up in the Boston area, with 4 other "regular" cars as well. I definitely have a hard time letting go of cars. But we're hijacking his thread...
 
have a no hair left 'cause I've pulled it all out.

Bill, Nick Thanks for all the help. I more stuck and frustrated then ever. I spent all afternoon and evening messing with this problem.
Checked the fuel pump with a jumper wire, I can hear and feel flow in the return hose.
I checked the air flow meter with a meter - checked out ok
tried running it with out the TPS - exactly the same.
check the TPS with a meter - checked out ok
tried running a new ground wire - no change.
check all the vacuum hoses I could find.

Bill you suggested a timing light to check for spark on each plug but do you think it would run like normal 30-60 seconds if it was missing? I don't have a timing light so I guess I could try pulling each one.

is there a way to check the fuel pressure without a SST?

The CODE 11 suggests electrical "Momentary interruption to the power supply to the ECU. I have checked all the tests for the CODE 11.
 
One thing we always checked on a car that would die out is fuel pressure. Get a gauge that can hook inline to your fuel system(filter?) and see what it reads when running and when it dies out.
When it dies and wont restart are you getting fuel/spark? Is the air filter clogged? Only ask because my friends car had this exact problem and it turned out her air filter was CLOGGED. Two friends actually.

BTW have you found a 80 yet? Are you looking for a 80 still?
 
Fuel filter? Bad gas? Fuel pump?
 
gtfour43 said:
One thing we always checked on a car that would die out is fuel pressure. Get a gauge that can hook inline to your fuel system(filter?) and see what it reads when running and when it dies out.
When it dies and wont restart are you getting fuel/spark? Is the air filter clogged? Only ask because my friends car had this exact problem and it turned out her air filter was CLOGGED. Two friends actually.

BTW have you found a 80 yet? Are you looking for a 80 still?
Click to expand...
i guess I need to pick up a pressure gauge. I check the air filter look ok.
I am always looking for an 80 but it has to be the right one or the right price. did you see the fj60 diesel the guy wants 12k for it.
 
Have you checked the intake hose from the AFM to the throttle body for cracks?
 
RockDoc said:
Have you checked the intake hose from the AFM to the throttle body for cracks?
Click to expand...

I haven't looked super close at it. I checked over most of the hoses the other day and I was surprised how good they looked. I grew up in a super low humidity climate. I thought you just trim back every vacuum until they don't reach and then replace them. I didn't find one cracked vac hose. The moist air where I live now is good for hoses bad for fenders.
 
Ok I don't know if it have lost everyone that was trying to help, if not I have a new piece to the puzzle. I double checked several things. I saw a post about someone who jumped the fuel pump in the service port and tried to start it. My 62 hasn't run for more than a minute it 2-3 weeks. With the fuel pump jumper it started and ran beautifully until I removed the jumper. Is there a fuel pump relay? I searched the FSM and can't find one besides the air flow meter. Does this tell me the fuel pump is bad?
 
jodajen2 said:
Ok I don't know if it have lost everyone that was trying to help, if not I have a new piece to the puzzle. I double checked several things. I saw a post about someone who jumped the fuel pump in the service port and tried to start it. My 62 hasn't run for more than a minute it 2-3 weeks. With the fuel pump jumper it started and ran beautifully until I removed the jumper. Is there a fuel pump relay? I searched the FSM and can't find one besides the air flow meter. Does this tell me the fuel pump is bad?
Click to expand...

IDK I don't have my wiring diagrams handy, if you say it runs fine jumped, that'd make me think the issue is with the AFM.But II'll have a look at the diagrams tonight.

Be sure to verify the intake hose as rockdoc suggests
 
If you jump the pump and the truck runs well, it makes me think it's not the pump but electrical. Plus, you were getting a code 11 'electrical' before, no?
I'd hate to see you drop the tank and install a new pump just to find out the pump was good all along. Check that AFM hose well, those cracks can be tricky. Plus, I knocked my MAF connector plug loose one day when after working on the truck and it wouldn't run. Could it be yours is loose? You've had it off lately.

Rereading your thread, I don't think you've pulled those plugs again to see if they're fouled. Could be another sympton. How's your CAT and o2 sensors?

I feel your pain, I really do. Took me over 6 months to track down my gremlins, but I just drove my truck to Home Depot today, and was reminded how much I love it.

Keep at it. The FSM is your friend.
 
NYNick said:
If you jump the pump and the truck runs well, it makes me think it's not the pump but electrical. Plus, you were getting a code 11 'electrical' before, no?
I'd hate to see you drop the tank and install a new pump just to find out the pump was good all along. Check that AFM hose well, those cracks can be tricky. Plus, I knocked my MAF connector plug loose one day when after working on the truck and it wouldn't run. Could it be yours is loose? You've had it off lately.

Rereading your thread, I don't think you've pulled those plugs again to see if they're fouled. Could be another sympton. How's your CAT and o2 sensors?

I feel your pain, I really do. Took me over 6 months to track down my gremlins, but I just drove my truck to Home Depot today, and was reminded how much I love it.

Keep at it. The FSM is your friend.
Click to expand...

OK think I have made a little headway. It took for ever to figure out the CIRCUIT OPENING RELAY is a FUEL PUMP RELAY. Why is the that not made more obvious in the FSM. I can understand how valuable the FSM is for testing but why doesn't it tell you the location of a item. From the diagram the Circuit opening relay looks like it is in right behind the valve cover on the engine side of the firewall. I read and searched the forums to figure out fuel pump relay and its location. The FSM was great for testing the relay once I found it. It was bad, found a replacement will try it tomorrow. Thanks
 
That sounds like the culprit! Take a pic of that thing and post for all to see!!
Keep us posted.
 
I have had the same sort of problem. It is very intermittent and I think it usually happens when I need to be somewhere. I have kept jugs of water in my car and have had success cooling the engine down and starting it. If I can keep it running (feather the accelerator) it usually has a rough idle for awhile. If I can get it up to speed the roughness goes away and the truck usually runs fine. I noticed that the cooling fan that cools the EFI area of the truck hardly ever runs. I had an 81' before the 88' and the fan clutch didn't work so the truck ran hot all the time so that fan ran all the time.. I want to find the culprit of this as well and thought it may be a temperature sensor limiting the car from starting up. I changed a ton of vacuum hose and that seemed to help for a little bit. Still a rough idle but is seemed to start more often.

The electrical grounding theory sounds about right since it is so intermittent. I was also thinking the FPR since I have read so much about it on here but a mechanic's test is $100 and a new one is $100. :doh:

This gets me to thinking more about the problem and how to solve it.
 
Bike n Board Cruiser said:
I noticed that the cooling fan that cools the EFI area of the truck hardly ever runs.
Click to expand...

It's wired so it'll only run when the engine is off, and the engine compartment is above a certain temp.

Bill
 
You must log in or register to reply here.

Share this page

Back
Top Bottom