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Intermittent no start then no start condition...continued. 700 1988

posted by  Bryan on  Wed Jul 20 13:03 CST 2005
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last visit: Tue May 4 00:53 CST 2010
[RELATED]

First thank you for your response.
My 88 has L.H 2.2. The 740's did not 2.4 until late 89 as did the 240

• Terminology? I'm guessing your "fuel pump" relay is my "Fuel Injection" relay. The white one that powers the pumps, and much more: AMM and ECU for example. Your FI relay? Maybe the "Interference/Radio Suppression" relay in the engine compartment?
You are correct in regards to the terminology.

• I don't know just how you "jumpered" the relay. It has two critical outputs. The pumps are just one of them. You're saying the pumps aren't the main issue, right? You can force them on by jumpering the relay, but still no start. Give me "jumpering" details please.
My testing information came from the FAQ:
http://www.brickboard.com/FAQ/700-900/EngineFuelinjection.htm#FuelPumpandFIRelayDiagnosticTests

Jumper terminals 30 and 87/2. This makes the pumps run continuously. Which just proves that they will run and pump fuel. It was a mistake on my part thinking that the car would start by just the pumps running.

• "Residual" pressure (from when the pumps last ran) can be misleading.
No it was more than residual pressure. When I swapped the FPR I did not have it tight and fuel sprayed everywhere.

• Fuse 1 is the main FI fuse, #11 is for tank pump. Do you have any wiring diagrams?
Once again this is from the same page of the FAQ but I am getting power to fuse 1

Tip:] To check for possible fuel pump relay failure go between center of cig lighter plug and fuse 11, should be less than .5 V (<500mV)

Do you have any wiring diagrams?
The only diagrams that I have are for my 90 model and it is a sorry chiltons manual for 90-93 that I am not sure I trust.
I will check for 12v and let you know.

--
90 744ti, Airbox, K/N, Cold air, G-Valve, Dual boost control, VDO, Modified exhaust. 88 745 gle, 99 Camry






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