1.3 Hijet doesn't idle well until warmed up

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Re: 1.3 Hijet doesn't idle well until warmed up

Post by jamesgates1000 on Sat Apr 12, 2014 6:47 pm

Drained the coolant out today and replaced all the hose clips.

Some were really corroded.


And some of the metal pipe fittings were also, I cleaned these up with emery/scotchbright.
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Re: 1.3 Hijet doesn't idle well until warmed up

Post by jamesgates1000 on Mon Apr 21, 2014 11:04 pm

Over the weekend i finished sorting the coolant system. Replaced all hose clips and thermostat, cleaned system with coolant flush, then loads of fresh water ensuring that the radiator and idle control valve were not blocked. I then pressure tested the system to 20psi, and found it to be completely airtight. Then finally refilled and bled using the HJ header method.
The van still stalls when dropping in revs until it has warmed up and now seems to run slightly hotter than before, had a two hour drive back to bristol and at points the needle almost touched the line before the hot section. Although when I looked in the expansion tank when i got back, the water level was exactly the same and i haven't been getting air under the passenger seat filler cap.
Any ideas what could be wrong, does it seem like I haven't bled it properly?
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Re: 1.3 Hijet doesn't idle well until warmed up

Post by d1noh on Mon Apr 21, 2014 11:21 pm

Check the system again when it is cold
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Re: 1.3 Hijet doesn't idle well until warmed up

Post by jamesgates1000 on Tue Apr 22, 2014 1:34 pm

Check it in what way?

When I filled/bled the system I didn't get any coolant come out of the rubber hose under the bonnet,  just the metal pipe. Also the fan doesn't seem to be kicking in now. Could the heater matrix be blocked? How do I bleed it? Do I need the engine running? (I still get hot air from all of the heaters and all coolant pipes get hot and firm when engine running)
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Re: 1.3 Hijet doesn't idle well until warmed up

Post by jamesgates1000 on Thu Apr 24, 2014 7:43 pm

Tested fan by shorting sensor connector, bottom pipes definitely cold now so i guesses the thermostat was sticking. Seems strange as the fan was kicking in when I did the 70 mile drive back to Bristol on Saturday. I have removed the thermostat now and tested it by putting in a pan of hot water, didn't have a thermometer to check temp by it definitely opened (will get a thermometer tomorrow to do a definitive test).
So I am guessing that I didn't bleed completely(although the jiggle pin was set in the correct position, air worked its way round the system and formed an airlock around the stat preventing it from heating up. )
Does this sound about right??
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Re: 1.3 Hijet doesn't idle well until warmed up

Post by HighlyJetted on Fri Apr 25, 2014 8:47 pm

It's the way it goes yep!
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Re: 1.3 Hijet doesn't idle well until warmed up

Post by jamesgates1000 on Fri Apr 25, 2014 10:12 pm

Cool, thanks for all the help.
Once this is done I'll start a project thread to document the respray and work I will be doing on the interior(fitting sound system, leisure batteries and doing a semi-camper conversion!)
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Re: 1.3 Hijet doesn't idle well until warmed up

Post by jamesgates1000 on Fri May 02, 2014 7:58 am

I bled the system using HJ's method with header tank using hose clamps to ensure sell pipes were bled then running the van with funnel of coolant squeezing all the air bubbles out.
After about half an hour the coolant level in the funnel rose from a third right to the top,  the bottom hose got hot and the fan kicked in.  So I am guessing that the thermostat opened at this point.  Is this how long they take to get up to temperature?
I drove to work this morning,  about 5 miles,  still stalling(I am going to check sensors this afternoon) . The temp gauge got close to the line, and I didn't hear the fan kick in.

Spoke too soon, after topping up the air gap again and driving home the fan has started working again.

Will have it for a long run this evening and see how it goes.
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Re: 1.3 Hijet doesn't idle well until warmed up

Post by jamesgates1000 on Mon May 19, 2014 7:10 pm

Right, been having a few problems and not much time to play around with the van.

This is where I am now, when I pressure tested the system I check everywhere except my new radiator caps.
The one on the radiator has been leaking badly, even more so if you press it slightly on the flanges areas.
I stuck another seal in it last week and drove it on a few small runs, it wasn't leaking from the front cap anymore and the fan was kicking in fine but only when the temp gauge almost reached the line.
Took it for a drive 70 miles down to the coast, still running quite hot until fan kicks in. Next day I opened the under passenger seat rad cap and I hadn't lost any water.
Pretty much thought it was sorted, but on the way back home, the fan didn't kick in at all and when I checked the rad cap the level was low once again.
Anyone give me any idea where I could be losing water too, not getting any come out the exhaust pipe and no purging/bubbling into expansion tank. Looks like there could be patches of moisture on the radiator, is it possible it could have some holes in it?
The van is running worse now than when I started and I have replaced all the clips and thermostat, before I started working on the van, the fan kicked in at about three quarters on the gauge, and it would sit in traffic at about halfway. Now it runs really hot, is it time to take the head off??
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Re: 1.3 Hijet doesn't idle well until warmed up

Post by HighlyJetted on Mon May 19, 2014 9:13 pm

Devil is in the detail.

A few vans I've had to fix had had recent head gasket jobs.

So make sure if your going to fix this shit, you need to make sure you know what your doing.
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Re: 1.3 Hijet doesn't idle well until warmed up

Post by jamesgates1000 on Fri May 30, 2014 7:46 am

I started checking the sensors yesterday, maps sensor seems okay 3V(ish) when engine off, voltage drops when i start the engine but does not increase back towards 3 volts when I press the accelerator pedal.
Air intake sensor is low... 1.4k Ohms
Temp sensor ECU part is reading 1k Ohms
and gauge part rewading 0.05k Ohms
I checked the ignitor unit, I/O-G1 measures 1.6 and the rest measure 2.8 so they are all down too.
TPS seems good, from 0.5 to 3.6 with pedal to the floor.

Now i am getting multiple obd codes

p0105 map
p0110 air intake
p0115 coolant temp sensor
p0130 o2 sensor
p0133 o2 sensor slow
p0300 cylinder misfire
p0301 cylinder 1 misfire
p0302 cylinder 2 misfire
p0303 cylinder 3 misfire
p0304 cylinder 4 misfire

Do all these sensors need replacing?

Could i have damaged them by pushing the multimeter probes into the back of the plugs?
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Re: 1.3 Hijet doesn't idle well until warmed up

Post by HighlyJetted on Fri May 30, 2014 8:23 am

What happened when you reset the codes, did they all come back?
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Re: 1.3 Hijet doesn't idle well until warmed up

Post by jamesgates1000 on Fri May 30, 2014 10:24 am

I reset the codes and just took the van for a 15min drive but the codes haven't come back yet.

UPDATE:
Just drove home from work and now have the two codes that I always have P00130/P00133 - O2 sensor
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Re: 1.3 Hijet doesn't idle well until warmed up

Post by jamesgates1000 on Thu Jul 03, 2014 4:39 pm

So I thought I would wrap this thread up for anyone who has been looking at it.

I didnt have time to continue tinkering with the van so I drove up to Crewe and left the van with Matt/HighlyJetted, he took the head off and found that someone had put the timing belt on a tooth out and then bodged the cam sensor, this explained why it was cutting out all the time. He got the head skimmed, straightened a valve and reground the seating, replaced the radiator, fixed a few leaks I had missed, pressure tested and adjusted the ignition timing.

Now the van runs really well, I have driven nearly 350 miles since picking it up last, week including a few hours of stop start traffic, getting in and out of glastonbury festival, the fan is kicking in when it should and the water level in the expansion tank hasn't moved.

If you are having any troubles with your Hijet I highly recommend Matt, the price was really good and it was well worth the 140 mile drive to get someone who really knows Hijets to repair it.

Here is his website...http://www.autofaultfinder.com/daihatsu-specialist/
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Re: 1.3 Hijet doesn't idle well until warmed up

Post by FrontBackSide2Side on Thu Jul 03, 2014 5:39 pm

Another good testament to Matt's work Smile

Glad its all sorted for you Smile
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